· "Detection of Melanoma and Lymphoma by ATR-FTIR spectroscopy", (A. G. U. Perera, H. Ghimire), US Patent No.: US 2020/0056991 A1, application published on Feb. 20,2020. Link : US20200056991A1 - Detection of melanoma and lymphoma by atr-ftir spectroscopy - Google Patents
· "Tunable Hot Carrier Photodetector" (A. G. U. Perera and Y. F. Lao), U.S. Patent No.: US 10,347,783 B2, issued on Jul. 9, 2019.
· "Tunable Hot Carrier Photodetector" (A. G. U. Perera and Y. F. Lao), AU. Patent No.: AU 2014347256 B2, issued on Nov. 22, 2018.
·
"Early Detection Of Cell Activation By
ATR-FTIR Spectroscopy", (J Titus,
C. Filfili, A. G. U. Perera, J. K.
Hilliard) U.S. Patent No. 99823129 B2,
issued on May 29, 2018.
·
"High Operation Temperature Split-Off
Band Infrared Detectors", Canada Patent # CA 2662526 A1, issued on
12/22/2015.
·
"ATR‐FTIR
for Non-Invasive Detections of Colitis”, (A. G. U. Perera, J. Titus,D. Merlin, and E. Viennois), U.S.
Patent No. 10527544 B2,issued on Jan 7,2020
· "High operating temperature split-off band infrared detector with double and/or graded barrier", (A. G. U. Perera and S.G. Matsik ) U. S. Patent No.8530,995, issued on September 10,2013
· "Three terminal UV-IR dual Band Photodetectors", (A. G. U. Perera and S.G. Matsik ) Serial No: 12/907518, allowed on 10/27/2011
· "Dual Band Photodetector", (A. G. U. Perera, and S.G. Matsik) U. S. Patent No.7838869, issued on Nov. 23, 2010.
· "High Operating Temperature SPLIT-OFF Band Infrared Detectors", (A. G. U. Perera and S. G. Matsik) U. S. Patent No. 7786508, issued on Aug.31, 2010.
205. “Epitaxial
Quantum Dot Infrared Photodetectors”, (A.G.U. Perera and G. Ariyawansa)
invited chapter for “The Wiley Encyclopedia of Electrical and Electronics
Engineering”, edited by John Webster, Wiley, 2014, ISBN: 9780471346081.
204.
“Homo and
Hetero Junction Interfacial Work-Function Internal Photo-Emission Detectors
from UV to IR ” (A. G. U. Perera)
“Advances in Infrared Photodetectors (Semiconductors and Semimetal
Series)”,(ISBN:9780123813374) Edited by C. Jagadish, S. D. Gunapala, and D.R.
Rhiger, Vol 84, pp.243-302, Elsevier Limited 2011.
203.
“Terahertz
Detection Devices ” (A. G. U. Perera, G. Ariyawansa, and S. G. Matsik) “Comprehensive Semiconductor Science and
Technology (Nine-Volume Set)”, (ISBN-13:978-0-444-53143-8, ISBN-10:
0-444-53143-2) Edited by Pallab Bhattacharya, Volume 6, pp. 265–307, Elsevier
Limited 2011.
202.
“Quantum
Dot Structures for Multi-Band Infrared and Terahertz Radiation Detection”
(G. Ariyawansa and A. G. U. Perera)
“Handbook of Self Assembled Semiconductor Nanostructures Novel Devices
in Photonics and Electronics”, Edited by M. Henini, Elsevier Limited 2007.
201.
"Quantum
Structures For Far-Infrared Detection" (A. G. U. Perera and S.G.
Matsik) "Intersubband Infrared Photodetectors", (ISBN
981-238-308-5) edited by V.Ryzhii, 229-280, Academic press 2002.
200.
"Silicon
and GaAs as Far-infrared Detector Material" (A. G. U. Perera) “Photodetectors and Fiber Optics”, (ISBN
0-12-513908-x) edited by H. S. Nalwa, 204-234, Academic Press 2001.
199.
“Semiconductor
Photoemissive Structures For Far Infrared Detection” (A. G. U. Perera)
“Handbook of Thin Film Devices", (ISBN 0-12-550760-7) co-editors, A. G. U. Perera and H. C. Liu , Maurice H.
Francombe, Vol 2, 135-167, San Deigo, Academic press 2000.
198.
"Quantum Well
Devices For Infrared Emission" (A. G. U. Perera, J. -W. Choe and M. H.
Francombe) “Physics of Thin films", editors, J. Vossen and M. H.
Francombe, Volume 23, 217-298, San Diego, Academic press 1998.
Return to Physics &
Astronomy Homepage
197.‘Infrared
spectrometry biomarkers for ulcerative colitis screening using human serum
samples’, Hemendra Ghimire, Emilie
Viennois, Xinjie Hu, Gengsheng Qin, Didier Merlin, A. G. Unil Perera,Journal of
Biophotonics (2022). (Full
paper in PDF format)
166. “Mid-infrared
photodetectors operating over an extended wavelength range up to 90 K”, Y.F. Lao, A. G. U. Perera, L. H. Li, S.
P. Khanna, E. H. Linfield, Y. H. Zhang and T. M. Wang, , Optics Lett, 41, 2, 285-288, ( 2016). (Full paper in
PDF format)
165. “InAs/GaAs quantum dot
and dots-in-well infrared photodetectors based on p-type valence-band
intersublevel transitions”, A.G. Unil Perera, Yan-Feng Lao, Seyoum Wolde, Y.H. Zhang, T.M.
Wang, J.O. Kim, Ted Schuler-Sandy, Zhao-Bing Tian, S.S. Krishna, Infrared Phys.
& Tech., 70, 15–19, (2015). (Full
paper in PDF format)
164. "Tin Oxide Based Dye-Sensitized
Solid-State Solar Cells: Surface Passivation for Suppression of Recombination", C.S.K. Ranasinghe, b, E.N.
Jayaweera, G.R.A. Kumara, R.M.G.
Rajapakse, B. Onwona-Agyeman, A.G.U. Perera, K. Tennakone, Materials Science in
Semiconductor Processing, Vol 40, p. 890–895 ( 2015). (Full
paper in PDF format)
163. “Effect
of quantum dot size and size distribution on the intersublevel transitions and
absorption coefficients of III-V semiconductor quantum dot”, Sanjib Kabi
and A. G. Unil Perera, J. Appl. Phys. 117, 124303 (2015). (Full
paper in PDF format)
162. “Band-offset
non-commutativity of GaAs/AlGaAs interfaces probed by internal photoemission
spectroscopy”, Yan-Feng Lao and A. G. Unil Perera, Y. H. Zhang and T. M.
Wang, Appl. Phys. Lett. 105, 171603
(2014). (Full
paper in PDF format)
161. “High
temperature terahertz response in a p-type quantum dot-in-well photodetector”,
Seyoum Wolde, Yan-Feng Lao, A. G. Unil Perera, Y. H. Zhang, and T. M. Wang, J.
O. Kim, Ted Schuler-Sandy, Zhao-Bing Tian, and S. Krishna, Appl. Phys. Lett. 105, 151107 (2014). (Full
paper in PDF format)
160. “Study
of valence-band intersublevel transitions in InAs/GaAs quantum dots-in-well
infrared photodetectors”, Yan-Feng Lao, Seyoum Wolde, A. G. Unil Perera, Y.
H. Zhang, T. M. Wang, J. O. Kim, Ted Schuler-Sandy, Zhao-Bing Tian and S. S.
Krishna, Appl. Phys. Lett. 104, 171113 (2014). (Full
paper in PDF format)
159. “Early
detection of cell activation events by means of attenuated total reflection
Fourier transform infrared spectroscopy”, Jitto Titus, Chadi Filfili, Julia
K Hilliard, John A Ward and A. G. U. Perera, Appl. Phys. Lett. 104, 243705
(2014). (Full
paper in PDF format)
158. "Tunable
hot-carrier photodetection beyond the bandgap spectral limit"
Y. F. Lao, A. G. Unil Perera, L. H. Li, S. P. Khanna, E. H. Linfield, and H. C.
Liu, Nature Photonics 8, 412–418 (2014).
doi:10.1038/nphoton.2014.80
157."Optical
study of HgCdTe infrared photodetectors using internal photoemission
spectroscopy" Y. F. Lao, A. G. U. Perera and Priyalal S.
Wijewarnasuriya, Appl. Phys. Lett. 104, 131106 (2014). (Full
paper in PDF format)
156."Wavelength-extended
photovoltaic infrared photodetectors" Y. F. Lao, P. K. D.
D. P. Pitigala, and A. G. U. Perera, L. H. Li, S. P. Khanna, and E. H.
Linfield, Appl. Phys. Lett. 104, 131101 (2014). (Full
paper in PDF format)
155."Performance
improvements of split-off band infra-red detector by Graded Barriers"
P. K. D. D. P. Pitigala, Y.F. Lao, A. G. U. Perera, L. Li, E. H. Linfield, H.
C. Liu, J. Appl. Phys. 115, 063105 (2014). (Full
paper in PDF format)
154."Effects
of Incident-Light-Intensity-Dependent Band Gap Narrowing on Barrier Heights of
p-Doped AlxGa1-xAs/GaAs Heterojunction Devices " P. K. D.
D. P. Pitigala, Y. F. Lao, A. G. U. Perera, Infrared Phys. & Tech., 63,
193-197 (2014). (Full
paper in PDF format)
153."InAs/GaAs
p-type quantum dot infrared photodetector with higher efficiency"
Yan-Feng Lao, Seyoum Wolde, A. G. Unil Perera, Y. H. Zhang, T. M. Wang, H. C.
Liu, J. O. Kim, Ted Schuler-Sandy, Zhao-Bing Tian and S. S. Krishna, Appl.
Phys. Lett. 103, 241115 (2013). (Full
paper in PDF format)
152."Direct
observation of spin-orbit splitting and phonon-assisted optical transitions in
the valence band by internal photoemission spectroscopy"
Yan-Feng Lao, A. G. Unil Perera, L. H. Li, S. P. Khanna, E. H. Linfield, H. C.
Liu, Physical Review B 88, 201302(R) (2013). (Full
paper in PDF format)
151."Band offsets
and carrier dynamics of type-II InAs/GaSb superlattice photodetectors studied
by internal photoemission spectroscopy" Yan-Feng Lao, P. K.
D. D. P. Pitigala, A. G. Unil Perera, E. Plis, S. S. Krishna et al, Appl. Phys.
Lett. 103, 181110 (2013). (Full paper
in PDF format)
150."Temperature-dependent
far-infrared response of epitaxial multilayer graphene"
Yan-Feng Lao, A. G. Unil Perera, Kristin Shepperd, Feng Wang, Edward H. Conrad
et al., Appl. Phys. Lett. 102, 231906 (2013). (Full paper in PDF
format)
149."Optical
phonon modes in InGaN/GaN dot-in-a-wire heterostructures grown by molecular
beam epitaxy" J. Titus, H. P. T. Nguyen, Z. Mi, and A. G.
U. Perera, Appl. Phys. Lett. 102, 121901 (2013). (Full
paper in PDF format)
148."Exciton
Transport and Electron Mobility of Organized Aggregates of Cationic Dye
Thiocyanates" K.Tennakone, P.K.D.D.P Pitigala, and A. G. U.
Perera, RCS Advance 3 2770 (2013). (Full
paper in PDF format)
147."A
multicolor, broadband (5-20?m), quaternary-capped InAs/GaAs quantum dot
infrared photodetector" Sourav Adhikary, Yigit Aytac,
Srujan Meesala, Seyoum Wolde, A. G. Unil Perera, and Subhananda Chakrabarti,
Appl. Phys. Lett. 101, 261114 (2012). (Full
paper in PDF format)
146."Temperature-Dependent
Internal-Photoemission Probe for Band Parameters" Y. F.
Lao, and A. G. U. Perera, Phys. Rev. B. 86, 195315 (2012). (Full
paper in PDF format)
145."Plasma
frequency and dielectric function dependence on doping and temperature for
p-type Indium Phosphide epitaxial films" R. C. Jayasinghe,
Y. F. Lao, M. Hammar, C. F. Cao, H. Wu, and A. G. U. Perera, J. of Physics:
Condensed Matter. (24), 435803 (2012). (Full
paper in PDF format)
144."Optical
properties of nanostructured TiO2 thin films and their application as
antireflection coatings on infrared detectors" R. C.
Jayasinghe, A. G. U. Perera, H. Zhu, and Y. Zhao, Optics Letters (37), 4302
(2012). (Full
paper in PDF format)
143."The
effect of reactor pressure on the electrical and structural properties of InN
epilayers grown by HPCVD" M. K. I. Senevirathna, S. Gamage,
R. Atalay, A. R. Acharya, A. G. U. Perera, N. Dietz, M. Buegler, A. Hoffmann,
L. Su, A. Melton, I. Ferguson, J. Vac. Sci. Technol. A 30, 031511 (2012). (Full
paper in PDF format)
142."Photovoltaic
Infrared Detection with p-type Graded Barrier Heterostructures"
P.K.D.D.P. Pitigala, S. G. Matsik, A. G. U. Perera , S. P. Khanna, L. H. Li, E.
H. Linfield, Z. R. Wasilewski, M. Buchanan, and H. C Liu , Journal of Applied.
Physics 111, 084505 (2012). (Full
paper in PDF format)
141." High-performance, long-wave (~10.2µm) InGaAs/GaAs quantum dot
infrared photodetector with quaternary In0.21Al0.21Ga0.58As capping"Subhananda
Chakrabarti, Sourav Adhikary, Nilanjan Halder, Yigit Aytac, and A. G. U.
Perera, Applied Physics Letter. 99, 181102 (2011). (Full
paper in PDF format)
140."
Design of resonant-cavity-enhanced multi-band photodetectors",Y.
Lao, G. Ariyawansa, and A. G. U. Perera, Journal of Applied. Physics 110, 043112
(2011). (Full
paper in PDF format)
139."
Dielectric function model for p-type semiconductor inter-valence band
transitions ", Yan-Feng Lao and A. G. Unil Perera, Journal
of Applied Physics 109, 103528 (2011). (Full
paper in PDF format)
138." Effects of Graded Barriers on the Operation of Split-Off Band
Infrared Detectors ", A. G. U. Perera, S. G. Matsik, D.P.
Pitigala, Y.F Lao, S. Khanna, L.H.Li, E.Linfield, Z.R.Wasilewski, M.Buchanan,
X.H.Wu, and H.C.Liu., Infrared Phys. Technol. 54 296-301 (2011).(Full
paper in PDF format)
137."
Highly sensitive GaAs/AlGaAs heterojunction bolometer ",
P.K.D.D.P. Pitigala, P.V.V.Jayaweera, S.G.Matsik, A.G.U.Perera and H.C.Liu,
Sensors and Actuators A 167 245-248 (2011). (Full paper in PDF
format)
136." Heterojunction plasmonic midinfrared detectors ",
M. S. Shishodia and A. G. Unil Perera, Journal of Applied Physics 109, 043108
(2011).(Full paper
in PDF format)
135." Surface plasmon enhanced IR absorpotion: Design and experiment
", M.S. Shishodia, P.V.V. Jayaweera, S.G. Matsik, A.G.U.
Perera, H.C. Liu, M. Buchanan, Photonics and Nanostructures- Fundamentals and
Applications 9, 95-100 (2011).(Full paper in PDF
format)
134."
Five Band Bias-Selectable Integrated Quantum Well Detector in an n-p-n
Architecture ", G. Ariyawansa, Y. Aytac, A. G. U. Perera,
S. G. Matsik, M. Buchanan, Z. R. Wasilewski, and H. C. Liu, Appl. Phys.
Lett.97, 231102 (2010).(Full paper in PDF
format)
133."
Light-hole and heavy-hole transitions for high-temperature long-wavelength infrared
detection ", Y.F. Lao, P.K.D.D.P. Pitigala, A.G.U. Perera,
H.C. Liu, M.Buchanan, Z.R. Wasilewski, K.K. Choi,and P. Wijewarnasuriya. Appl.
Phys. Lett.97, 091104 (2010).(Full paper in PDF format)
132."Low-Cost ZnO-Based Ultraviolet–Infrared Dual-Band Detector
Sensitized With PbS Quantum Dots", P.V.V. Jayaweera,
P.K.D.D.P. Pitigala, J.F. Shao, K. Tennakone, A.G.U. Perera, P.M. Jayaweera, J.
Baltrusaitis. IEEE Transactions on Electron Devices 57 (10) 2756-2760 (2010).(Full paper in
PDF format)
131." High-performance quantum ring detector for the 1.3 terahertz range
", S. Bhowmick, G. Huang, W. Guo, C. S. Lee, P.
Bhattacharya, G. Ariyawansa, and A. G. U. Perera Appl. Phys. Lett.96, 231103
(2010).(Full
paper in PDF format)
130." Low-Cost UV-IR Dual Band Detector Using Nonporous ZnO Film
Sensitized by PbS Quantum Dots ", (SHAO Jia-Feng, A. G. U.
Perera, P. V. V. Jayaweera, and HE De-Yan), Chin. Phys. Lett.27, 027302 (2010).(Full
paper in PDF format)
129." Analysis of Dark Current Mechanisms for Split-Off Band
Infrared Detectors at High Temperatures ", (Y. F. Lao, P.
V. V. Jayaweera, Steven G. Matsik, A. G. Unil Perera, H. C. Liu, M. Buchanan, and
Z. R. Wasilewski), IEEE Transactions on Electron Devices 57, 1230 (2010).
(Full paper in PDF format)
128.“ Polarization Sensitivity of Quantum Well Infrared
Photodetector Coupled to a Metallic Diffraction Grid”, (V.
Apalkov, G. Ariyawansa, A. G. U. Perera, M. Buchanan, Z. R. Wasilewski, and H.
C. Liu), IEEE J. Quantum Electron 46, 877-883 (2010).(Full
paper in PDF format)
127.“
Quantum dot nanostructures for multi-band infrared detection”,
(A. G. U. Perera, G. Ariyawansa, G. Huang, P. Bhattacharya), Infrared Physics
& Technology 52, 252-256 (2009). (Full paper
in PDF format)
126.“
Operating temperature and the responsivity of split-off band detectors”,
(A. G. U. Perera, P. V. V. Jayaweera, S. G. Matsik, H. C. Liu, M. Buchanan, Z.
R. Wasilewski), Infrared Physics & Technology 52, 241-246 (2009). (Full paper in
PDF format)
125.“ Device modeling for split-off band detectors”,(S.
G. Matsik, P. V. V. Jayaweera, A. G. U. Perera, K. K. Choi, and P.
Wijewarnasuriya) , Journal of Applied Physics 106, 1064503 (2009). (Full paper
in PDF format)
124.“ Effect of emitter thickness on the spectral shape of
heterojunction interfacial workfunction internal photoemission detectors”,
(S. G. Matsik, R. C. Jayasinghe, A. B. Weerasekara, A. G. U. Perera, E. H.
Linfield, S. P. Khanna, M. Lachab, and H.C. Liu), Journal of Applied Physics
106, 014509 (2009). (Full
paper in PDF format)
123.“Normal incidence detection of ultraviolet, visible, and
mid-infrared radiation in a single GaAs/AlGaAs device”, (G.
Ariyawansa, P. V. V. Jayaweera, A. G. U. Perera, S. G. Matsik, M. Buchanan, Z.
R. Wasilewski, and H. C. Liu), Optics Letters 34, 2036 (2009). (Full
paper in PDF format)
122. “Wavelength
agile superlattice quantum dot infrared photodetector”, (G.
Ariyawansa, A. G. U. Perera, G. Huang, and P. Bhattacharya), Appl. Phys. Lett.
94, 131109 (2009). (Full paper in
PDF format)
121. “A
quantum ring terahertz detector with resonant tunnel barriers”,
(G. Huang, W. Guo, P. Bhattacharya, G. Ariyawansa, and A. G. U. Perera), Appl.
Phys. Lett. 94, 101115 (2009). (Full paper in PDF
format)
120.
“Room
Temperature Nano and Micro Structure Photon Detectors”, (A.G.U.
Perera, P.V.V. Jayaweera, G. Ariyawansa, S.G. Matsik, K.
Tennakone, M. Buchanan, H.C. Liu, X.H. Su and P. Bhattacharya),
Microelectronics Journal, Volume 40, Issue 3, pp. 507-511 (2009). (Full paper
in PDF format)
119. "Capacitance
hysteresis in GaN/AlGaN heterostructures", (L. E. Byrum, G.
Ariyawansa, R. C. Jayasinghe, N. Dietz, A. G. U. Perera, S. G. Matsik, I. T.
Ferguson, A. Bezinger, and H. C. Liu), Journal of Applied Physics, Vol.105,
Issue 2, pp. 023709-1 to 023709-4 (2009). (Full
paper in PDF format)
118. "Simultaneous
detection of ultraviolet and infrared radiation in a single GaN/GaAlN
heterojunction", (Ranga C. Jayasinghe, Gamini Ariyawansa, Nikolaus
Dietz, A. G. Unil Perera, Steven G. Matsik, Hongbo B. Yu, Ian T. Ferguson, Andrew
Bezinger, Sylvain R. Laframboise, Margaret Buchanan, and Hui Chun Liu), Optics
Letters Vol. 33, Iss. 21, pp. 2422–2424 (2008). (Full
paper in PDF format)
117.
"Dopant
Migration-Induced Interface Dipole Effect in n-Doped GaAs/AlGaAs Terahertz
Detectors", (Jit, S.; Weerasekara, A. B.; Jayasinghe, R. C.; Matsik,
S. G.; Perera, A. G. U.; Buchanan, M.; Sproule, G. I.; Liu, H. C.; Stintz, A.;
Krishna, S.; Khanna, S. P.; Lachab, M.; Linfield, E. H.), Electron Device
Letters, IEEE, Volume 29, Issue 10, pp. 1090–1093 (2008). (Full paper in
PDF format)
116.
"Self-consistent
performance modeling for dualband detectors", (S.G. Matsik, A.G.U.
Perera), J. Appl. Phys. 104, 044502 (2008).(Full
paper in PDF format)
115.
“Uncooled
infrared detectors for 3-5 µm and beyond”, (P.V.V.
Jayaweera, S. G. Matsik, A. G. U. Perera, H. C. Liu, M. Buchanan and Z.
R. Wasilewski), Appl. Phys. Lett. 93, 021105 (2008). (Full paper
in PDF format)
114.
“Bias-selectable
tri-color tunneling quantum dot infrared photodetector for atmospheric windows”,
(G. Ariyawansa, V. Apalkov, A. G. U. Perera, S. G. Matsik, G. Huang, and P.
Bhattacharya), Appl. Phys. Lett.92, 111104 (2008). (Full
paper in PDF format)
113. “Optical
properties of n-doped Ga1−xMnxN epitaxial layers grown by metal-organic
chemical-vapor in mid and far "5-50 _m… IR range”, (A. B.
Weerasekara, Z. G. Hu, N. Dietz, A. G. U. Perera, A. Asghar, M. H.
Kane, M. Strassburg and I. T. Ferguson), J. Vac. Sci. Technol.
B 26(1) 52-55 Jan/Feb (2008). (Full
paper in PDF format)
112.
“Sensitization
of TiO2 and ZnO nanocrystalline films with acriflavine”, (M.K.I. Senevirathne, P.K.D.D.P. Pitigala, V.
Sivakumar, P.V.V. Jayaweera, A.G.U. Perera and K. Tennakone),
Journal of Photochemistry and Photobiology A: Chemistry, 195, 364-367,(2008). (Full
paper in PDF format)
111.
“A Multi-Color
Quantum Dot Intersublevel Detector with Photoresponse in the
110. "Semiconductor
Terahertz Detectors and Absorption Enhancement Using Plasmons", (A. G. U. Perera, G. Ariyawansa, P. V. V.
Jayaweera, S. G. Matsik, M. Buchanan and H. C. Liu), Microelectronics Journal,
MEJ2237, 39, 601-606, (2008). (Full paper in PDF
format)
109.
"Why Gratzel′s
cell works so well" (P.V.V. Jayaweera, A.G.U. Perera and K.
Tennakone) Inorganica Chimica Acta, 361(3), 707-711, February
(2008), (Full paper in
PDF format)
108.
“High-Temperature
Tunneling Quantum-Dot Intersublevel Detectors for Mid-Infrared to Terahertz
Frequencies” (P. Bhattacharya, Xiaohua Su, G. Ariyawansa, A. G. U. Perera),
Proceedings of the IEEE 95, 1828– 1837 (2007). (Full
paper in PDF format)
107.
"Displacement
currents in semiconductor quantum dots embedded dielectric media: A method for
room temperature photon detection", (P. V. V. Jayaweera, A. G. U. Perera, and K. Tennakone) Applied Physics
Letters 91, 063114-3, (2007).(Full
paper in PDF format)
106.
"Dual-band
pixelless upconversion imaging devices", (L. K. Wu, H. L. Hao,
W. Z. Shen, G. Aeiyawansa, A. G. U. Perera, and S. G. Matsik), Optics Letters,
32 2366-2368, (2007) (Full paper in PDF
format)
105. "Carrier
concentration and surface electron accumulation in indium nitride layers grown
by high pressure chemical vapor deposition." (R. P. Bhatta, B. D.
Thomas, A. Weerasekera, A. G. U. Perera, M. Alevli, and N. Dietz) J. Vac. Sci.
Technol. A 25(4) 967-970 July (2007)
(Full paper in PDF format)
104. "Wavelength
and Polarization Selective Multi-Band Tunneling Quantum Dot Detectors", (A. G. U. Perera, G. Ariyawansa, V. M.
Apalkov, S. G. Matsik, X. H. Su, S. Chakrabarti, and P. Bhattacharya),
Opto-Electron. Rev., 15(4), 223–228 (2007).(Full
paper in PDF format)
103. “Infrared optical anisotropy of diluted magnetic Ga1-x MnxN/c
–sapphire epilayers with a GaN buffer layer by metaloorganic chemical vapor
deposition.” (Z. G. Hu, A. B.
Weerasekara, N. Dietz A. G. U. Perera, M. Strassburg, M. H. Kane, A. Asghar and
102.
"n-type GaAs/AlGaAs Heterostructure detector with
a 3.2 THz threshold frequency”
(A. B. Weerasekara,
M. B. M. Rinzan, S. G. Matsik, A. G. U. Perera, M. Buchanan, H. C. Liu, G. von
Winckel, A. Stintz, and S. Krishna) Optics Letters, 32 (10), 1335-1337, (2007) (Full paper
in PDF format).
101. “GaSb homojunctions
for Far-IR (THz) Detection” (P. V. V. Jayaweera, S. G. Matsik, and A. G. U. Perera, Y.
Paltiel, Ariel Sher and Arie Raizman, H. Luo, and H. C. Liu), Applied Physics Letters, 90, 111109, (2007) (Full
paper in PDF format)
100. “Effects of a p–n
junction on heterojunction far infrared detectors”（S.G. Matsik, M.B.M. Rinzan, A.G.U. Perera, H.H. Tan, C. Jagadish and
H.C. Liu）Infrared Physics &
Technology, 50, 274-278 (2007) (Full paper in
PDF format)
99. “Quantum
mechanical effects in internal photoemission THz detectors” (M.B. Rinzan, S. Matsik and A.G.U. Perera) Infrared Physics
& Technology, 50,199-205 (2007) (Full paper in
PDF format)
98.
“Performance improvements of ultraviolet/infrared dual-band
detectors” (A.G.U. Perera,
G. Ariyawansa, M.B.M. Rinzan, M. Stevens, M. Alevli, N. Dietz, S.G. Matsik, A.
Asghar, I.T. Ferguson, H. Luo et al.) Infrared Physics & Technology, 50, 142-148 (2007) (Full paper
in PDF format)
97.
“Multi-color
tunneling quantum dot infrared photodetectors operating at room temperature” (G. Ariyawansa, A.G.U. Perera, X.H. Su,
96. “1/f
Noise in dye-sensitized solar cells and NIR photon detectors” (P.V.V.
Jayaweera, P.K.D.D.P. Pitigala, M.K.I. Seneviratne, A.G.U. Perera
and K. Tennakone) Infrared Physics & Technology, 50, 270-273 (2007) (Full
paper in PDF format)
95. “Si doped GaAs/AlGaAs terahertz detector
and phonon effect on the responsivity” (A.B.
Weerasekara, M.B.M. Rinzan, S.G. Matsik, A.G.U. Perera, M. Buchanan, H.C. Liu,
G. von Winckel, A. Stintz and S. Krishna) Infrared Physics & Technology,
50,194-198 (2007) (Full paper in
PDF format)
94.
"Spin
split-off transition based IR detectors operating at high temperatures" (P.V.V. Jayaweera, S.G. Matsik, K. Tennakone, A.G.U.
Perera, H.C. Liu and
93. "Optical Studies of MOCVD grown GaN based ferromagnetic semiconductorepilayers and devices"(M. H. Kane, M. Strassburg, W. E. Fenwick, A. Asghar, J. Senawiratne, D. Azamat, Z. Hu, E. Malguth, S. Graham, U. Perera, W. Gehlhoff, A. Hoffmann, N. Dietz, C. J. Summers, I. T. Ferguson) Physica Status solidi, 3 (6), 2237-2240 ( 2006) (Full paper in PDF format)
92.
"Quantum
structures for multiband photon detection" (A.G.U. Perera)
Opto-Electronics Review, 14 (2), 103-112, (2006) (Full paper in
PDF format)
91.
“High
Operating Temperature Split-off
Band Infrared Detectors” (A. G. U. Perera, S. G. Matsik, P. V. V.
Jayaweera, K. Tennakone, H. C. Liu, M. Buchanan G. Von Winckel, A. Stintz, and
S. Krishna) Appl.Phys.Lett., 89, 131118, (2006) (Full paper
in PDF format)
90.
“The
Characterization of InN layers grown by high-pressure chemical vapor deposition” (M. Alevli, G. Durkaya, W. Fenwick, A.
Weerasekara, V. Woods, I. Ferguson, U. Perera and N. Dietz) Appl.Phys.Lett., Lett. 89, 112119, (2006) (Full
paper in PDF format)
89.
“GaN/AlGaN
heterojunction infrared detector responding in 8-14 µm and 20-70 µm
ranges” (G. Ariyawansa, M. B. M. Rinzan, M. Strassburg,
88.
“GaN/AlGaN
ultraviolet/infrared dual-band detector” (G. Ariyawansa, M. B. M.
Rinzan, M. Alevli, M. Strassburg,
87.
“Characteristics
of a Si dual-band detector responding in both near- and far-infrared regions” (G. Ariyawansa, M. B. M. Rinzan, S. G. Matsik, A. G. U.
Perera, G. Hastings,
H. C. Liu, M. Buchanan, G. I. Sproule, V. I. Gavrilenko, and V. P. Kuznetsov) Appl.Phys.Lett., 89, 061112, (2006) (Full
paper in PDF format)
86.
“Terahertz
detection with tunneling quantum dot intersublevel photodetector" (X.H. Su, J. Yang, P. Bhattacharya, G.
Ariyawansa, and A.G. U. Perera) Appl.Phys.Lett., 89, 031117 (2006) (Full
paper in PDF format)
85.
“Longitudinal–optical
phonon hole plasmon coupled modes in heavily doped p-type GaSb:Zn
epitaxial films” (Z. G. Hu, M. B. M. Rinzan, A. G. U. Perera, M. Zhu,
Y. Paltiel, A. Raizman, and A. Sher) Eur. Phys. J. B., 50,
403-410, (2006) (Full
paper in PDF format)
84.
"Grouping
behavior of inter-pulse time intervals for triggered pulses in an AlGaAs/InGaAs
multilayer structure"
(A. B. Weerasekara, S. G. Matsik, G. S. Cymbalyuk and A. G. U. Perera) Physica
D, 215, 159-165, (2006). (Full
paper in PDF format)
83.
"Lattice
vibrations in hexagonal Ga1–xMnxN epitaxial films on c-plane sapphire
substrates by infrared reflectance spectra"
(Z. G. Hu, M. Strassburg, A. Weerasekara, N. Dietz, A. G. U. Perera, M. H.
Kane, A. Asghar, and I. T. Ferguson) Appl. Phys. Lett., 88, 061914,
(2006) (Full
paper in PDF format)
82.
“Composition
dependence of the infrared dielectric function in Si- doped hexagonal AlxGa1-xN
films on c-plane sapphire substrates ”(Z. G. Hu, M.Strassburg, N. Dietz.
A.G. U. Perera, A. Asghar, I.T. Ferguson) Phys. Rev. B., 72, 245326, (2005) (Full paper in
PDF format)
81.
“Terahertz
absorption in AlGaAs films and detection using heterojunctions” (M. B. M.
Rinzan, A. G. U. Perera, S. G. Matsik, H. C. Liu, M. Buchanan, G. Von
Winckel, A. Stintz, and S. Krishna) Infrared Physics & Technology., 47,
188–194, (2005) (Full paper in PDF
format)
80.
“1/f
noise and dye-sensitized solar cells” (P. V. V. Jayaweera, P. K. D. D. P.
Pitigala, A. G. U. Perera and K. Tennakone) Semicond. Sci. Technol. 20,
L40–L42, (2005) (Full paper in PDF format)
79.
“High Performance
mid-infrared quantum dot infrared photodetectors” (S. Chakrabarti, A D
Stiff-Roberts, X Su, P Bhattacharya, G Ariyawansa, and A. G. U. Perera) J. Phys
D. Appl. Phys. 38, 2135-2141, (2005) (Full
paper in PDF format)
78.
“A Resonant
Tunneling Quantum-Dot Infrared Photodetector” (Xiaohua Su, Subhananda
Chakrabarti, Pallab Bhattacharya, Gamini Ariyawansa, and A. G. U. Perera), IEEE
Journal of Quantum Electronics, 41(7), 974-979, (2005) (Full paper in PDF
format)
77.
“Zn-Doped GaSb
Epitaxial Film Absorption Coefficients at Terahertz Frequencies and Detector
Applications” (Z. G. Hu, A. G. U. Perera, Y. Paltiel, A. Raizman, & A.
Sher), Journal of Applied Physics, 98, 023511, (2005) (Full paper in PDF
format)
76.
“Characteristics
of a Tunneling Quantum-dot Infrared Photodetector Operating at Room Temperature”
(P. Bhattacharya, X. H. Su, S. Chakrabarti, G. Ariyawansa,
and A. G. U. Perera), Appl. Phys. Lett, 86, 191106, (2005) (Full paper in PDF
format)
75.
“Optical
Characterizations of Heavily Doped p-type AlxGa1-xAs and
GaAs Epitaxial Films at Terahertz Frequencies” (Z. G. Hu, M. B. M. Rinzan,
S. G. Matsik, A. G. U. Perera, G. Von Winckel, A. Stintz, and S. Krishna),
Journal of Applied Physics, 97, 093529, (2005) (Full
paper in PDF format)
74.
"Near- and
Far-Infrared p-GaAs Dual Band Detector” (G. Ariyawansa, M.B.M. Rinzan, D.
G. Esaev, S. G. Matsik, G. Hastings, A. G. U. Perera, H. C. Liu, B. N. Zvonkov,
and V. I. Gavrilenko), Appl. Phys. Lett, 86, 143510, (2005) (Full paper in PDF
format)
73.
"AlGaAs
emitter/GaAs barrier Terahertz detector with a 2.3 THz threshold,” (M.B.M.
Rinzan, A. G. U. Perera, S. G. Matsik, H. C. Liu, Z. Wasilewski and M.
Buchanan) Appl. Phys. Lett, 86, 071112, (2005) (Full paper in
PDF format)
72.
"Effect
of Well Width on Three Color Quantum Dot-in-a-Well Infrared Detectors” (G.
Ariyawansa, A. G. U. Perera, Senior Member, IEEE, G. S. Raghavan, G. von
Winckel, A. Stintz, and Sanjay Krishna), IEEE Photonics Tech. Letts, 17,
1064-1066, (2005) (Full paper in PDF
format)
71.
"Effect of
Doped Substrate on GaAs/AlGaAs Interfacial Workfunction IR Detector Response
through Cavity Effect" (S. G. Matsik, M. B. M. Rinzan, D. G. Esaev, A.
G. U. Perera, G. Von Winckel, A. Stintz, and S. Krishna) IEEE Transactions on
Electron Devices, 52 (3), 413-418, (2005) (Full
paper in PDF format)
70.
"Characteristics
of a Multicolor InGaAS--GaAs Quantum-Dot Infrared Photodetector" (S.
Chakrabarti, Member, IEEE, X. H. Su, P. Bhattacharya, Fellow, IEEE,
G. Ariyawansa, and A.G.U. Perera) IEEE Photonics Technology Letters , 17 (1),
178-180, (2005) (Full paper in PDF
format)
69.
"Dye-sensitized
Near-infrared Room-temperature Photovoltaic Photon Detectors" (P.V.V.
Jayaweera, A.G.U. Perera, M.K.I. Senevirathna, P.K.D.D.P. Pitigala, and K.
Tennakone) Applied Physics Letter, 85 (23), 5754-5756, (2004) (Full
paper in PDF format)
68.
"Free
Carrier Absorption in Be-doped Epitaxial AlGaAs Thin Films" (M. B. M.
Rinzan, D. G. Esaev, A. G. U. Perera, S. G. Matsik, G. Von Winckel, A. Stintz,
and S. Krishna) Applied Physics Letter, 85 (22), 5236-5238, (2004) (Full paper in
PDF format)
67.
"Design
and Optimization of GaAs/AlGaAs Heterojunction Infrared Detectors."
(D. G. Esaev, M. B. M. Rinzan, S. G. Matsik, and A. G. U. Perera) Journal of
Applied Physics, 96 (8), 4588-4597, (2004) (Full
paper in PDF format)
66.
"Construction
of a Photovoltaic Device by Deposition of Thin Films of the Conducting Polymer
Polythiocyanogen", (V.P.S.
Perera, P.V.V. Jayaweera, P.K.D.D.P. Pitigala,
P.K.M. Bandaranayake, G. Hastings, A. G. U. Perera, K.
Tennakone) Synthetic Metals, 143, 283-287, (2004) (Full paper in
PDF format)
65.
"High Performance
Single Emitter Homojunction Interfacial Workfunction Far Infrared
Detectors", (D. G. Esaev, M. B. M. Rinzan, S. G. Matsik,
A. G. U. Perera, H. C. Liu, B. N. Zvonkov , V. I. Gavrilenko and A. A.
Belyanin) Journal of Applied Physics, 95 (2), 512-519, (2004) (Full paper in PDF
format)
64.
"20 Micron
Cutoff Heterojunction Interfacial Work Function Internal Photoemission
Detectors", ( S. G. Matsik, M. B. M. Rinzan, D. G. Esaev, A. G.
U. Perera, H. C. Liu and M. Buchanan) Applied Physics letters, 84 (18), 3435-3437, (2004) (Full paper in PDF
format)
63.
"The
Effects of Light–Heavy Hole Transitions on the Cutoff Wavelengths of Far
Infrared Detectors", (A. G. U. Perera, S. G. Matsik, M. B. M.
Rinzan, A. Weerasekara, M. Alevli, H. C. Liu, M. Buchanan, B. Zvonkov and V.
Gavrilenko) Infrared Physics & Technology, 44 (5-6), 347-353, (2003) (Full paper in PDF format)
62.
"Three-color
(λ1~3.8 µm, λ1~8.5 µm, and λ1~23.2 µm) InAs/InGaAs quantum-dots-in-a-well
detecto",
(G. Ariyawansa, S. G. Matsik, A. G. U. Perera, S. Krishna, S. Raghavan, G. von
Winckel, and A. Stintz) Applied Physics Letters, 83 (14), 2745-2747, (2003) (Full paper in PDF
format)
61.
"Resonant cavity enhancement in
heterojunction GaAs/AlGaAs terahertz detectors", (D. G. Esaev, S. G. Matsik, M. B.
M. Rinzan, A. G. U. Perera and H. C. Liu) Journal of Applied
Physics, 93 (4), 1879 ~ 1883, (2003) (Full paper in PDF
format)
60.
"Cutoff tailorability
of heterojunction terahertz detectors", ( S. G. Matsik, M. B. M.
Rinzan, A. G. U. Perera, H. C. Liu, Z. R. Wasilewski, and M. Buchanan) Appl.
Phys. Lett. 82 (1), 139-141, (2003) (Full paper in PDF
format)
59.
“Transient Photocurrent
Overshoot in Quantum-well Infrared Photodetectors”, (V. Letov, M. Ershov,
S.G. Matishik, and A. G. U. Perera) Appl. Phys. Lett. 79 (13), 2094-2096,
(2001) (Full paper in PDF
format)
58.
"Spontaneous
Oscillations and Triggered Pulsing in GaAs/InGaAs Multiquantum Well Structures
", (A. G. U. Perera,
S. G. Matsik, V. Y. Letov, H. C. Liu, M. Gao, M. Buchanan, W. J. Schaff)
Solid-state Electronics, 45 (7), 1121-1125, (2001) (Full paper in PDF
format)
57. "35 µm Cutoff
Bound-toquasibound and Bound-to-continuum InGaAs QWIPs ", (A. G. U. Perera, S. G.
Matsik, H. C. Liu, M. Gao, M. Buchanan, W. J. Schaff, and W. Yeo) Infrared
Physics & Technology, 42, 157-162, (2001) (Full paper in PDF
format)
56.
"Space
Charge Spectroscopy of Intergrated Quantum Well Infrared Photodetector--Light
Emitting Diode ",
(M. Ershov, B. Yaldiz, A. G. U. Perera, S. G. Matsik, H. C. Liu, M. Buchanan,
Z. R. Wasilewski, and M. D. Willams), Infrared Physics & Technology, 42,
259-265, (2001) (Full
paper in PDF format)
55.
“Experimental
Observation of Transitent Photocurrent Overshoot in Quantum Well Infrared
Photodetectors ",
(V. Letov, A. G. U. Perera, M. Ershov, H. C. Liu, M. Buchanan, and Z. R.
Wasilewski), Infrared Physics & Technology, 42, 243-247, (2001) (Full paper in PDF format)
54.
"Chaotic
Dynamics in Terahertz-driven Semiconductors with Negative Effective Mass ", (J. C. Cao, H. C. Liu, X.
L. Lei, A. G. U. Perera) Physical Review B., 63, 115308, (2001) (Full paper in PDF format)
53.
"Heterojunction
Wavelength-Tailorable Far-Infrared Photodetectors with Response out to 70
Microns", (
A. G. U. Perera, S. G. Matsik, B. Yaldiz, H. C. Liu, A. Shen, M. Gao, Z. R.
Wasilewski and M. Buchanan), Appl. Phys. Lett., 78, 2241~2243, (2001) (Full paper in PDF format)
52.
"Low Dark
Current Far Infrared Detector with an Optical Cavity Architecture", (A. L. Korotkov, A. G. U.
Perera, W. Z. Shen, H. C. Liu, M. Buchanan), Solid-State Electronics, 45,
87-93, (2001) (Full
paper in PDF format)
51.
"Free-carrier
Absorption in Be- and C-doped GaAs Epilayers and Far Infrared Detector
Applications",
(A. L. Korotkov, A. G. U. Perera, W. Z. Shen, J. Herfort, K. H. Ploog, W. J.
Schaff and H. C. Liu), Journal of Applied Physics, 89 (6), 3295~3300,
(2001) (Full
paper in PDF format)
50.
“GaAs/InGaAs
Quantum Well Infrared Photodetector with a Cutoff Wavelength at 35 µm ”, (A. G. U. Perera, S. G.
Matsik, H. C. Liu, M. Gao, M. Buchanan, W. J. Schaff and W. Yeo), Applied
Physics Letters, 77, 741~743, (2000) (Full paper in PDF
format)
49. “GaAs Homojunction
Interfacial Workfunction Internal Photoemission (HIWIP) Far-infrared Detectors",
(A. G. U. Perera, W. Z. Shen, H. C. Liu, M. Buchanan, and W. J. Schaff),
Material Science and Engineering, B74, 56~60, (2000) (Full paper in PDF
format)
48.
"Optical
Interference and Nonlinearities in Quantum-well Infrared Photodetectors",
(M. Ershov, H.C. Liu, A. G. U. Perera and S. G. Matsik), Physica E, 7,115~119,
(2000) (Full
paper in PDF format)
47.
"Effect of
Interface States on the Performance of GaAs p+ –i Far–infrared Detectors",
(A. G. U. Perera,W. Z. Shen and M. Ershov; H. C. Liu and M. Buchanan; S. D.
Gunapala, S. V. Bandara, and J. K. Liu; H. H. Ye and W. J. Schaff), JVST A, 18
(2) 597~600, (2000) (Full
paper in PDF format)
46.
“Effects of
Traps on the Dark Current Transients in GaAs/AlGaAs Quantum Well Infrared
Photodetectors", ( A. G. U. Perera, S. G. Matsik, M. Ershov, Y. W. Yi,
H. C. Liu, M. Buchanan, and Z. R. Wasilewski), Physica E, 7, 130~134, (2000) (Full paper in
PDF format)
45.
“Theory of
Transient Spectroscopy of Multiple Quantum Well Structures”, (M. Ershov, H.
Ruda, A. Shik andA. G. U. Perera), Journal of Applied Physics, 86 (3),
1510-1513, (1999) (Full paper in PDF
format)
44.
"GaAs
Homojunction Interfacial Workfunction Internal Photoemission (HIWIP)
Far-infrared Detectors", (A. G. U. Perera and W. Z. Shen), Journal
of the Association of Polish Electrical Engineers, Opto-Electronics Review 7
(3), (1999).
43.
“Negative
Capacitance of GaAs Homojunction Far-infrared Detectors”, (A. G. U. Perera,
W. Z. Shen, M. Ershov, H. C. Liu, M. Buchanan, and W. J. Schaff), Applied
Physics Letters, 74 (21), 3167-3169(1999). (Full paper in PDF
format)
42.
“Low-frequency Noise
and Interface States in GaAs Homojunction Far-infrared Detectors”, (W.
Z. Shen andA. G. U. Perera), IEEE Transactions on Electron Devices, 46 (4),
811-814(1999).
41.
"Demonstration
of Si homojunction far-infrared detectors ", (A. G. U. Perera, W. Z.
Shen, S. G. Matsik, H. C. Liu, M. Buchanan, and W. J. Schaff), Applied Physics
Letters, 72 (18), 2307-2309, (1998)
40.
"GaAs/AlGaAs
Quantum Well Photodetector with 27 micron peak Wavelength", (A. G. U.
Perera, W. Z. Shen, S. G. Matsik, H. C. Liu, M. Buchanan, and W. J. Schaff) Applied
Physics Letters, 72 (13), 1596-1598, (1998) (Full paper in PDF
format)
39.
"Effect of
emitter layer concentration on the performance of GaAs p+-i homojunction
far-infrared detectors: A comparison of Theory and Experiment" (W. Z.
Shen, A. G. U. Perera, M. H. Francombe, H. C. Liu, M. Buchanan and W. J.
Schaff) IEEE transactions of Electron Devices, 45 (8), 1671-1677, (1998) (Full paper in PDF format)
38.
"Photoconductivity
in homojunction Internal Photoemission Infrared Detectors", (W. Z.
Shen and A. G. U. Perera) Infrared Physics and Technology, 39, 329~333, (1998).
37.
"Photoconductive
Generation Mechanism and Gain in Internal Photoemission Infrared Detectors",
(W. Z. Shen and A. G. U. Perera) J. Appl. Phys, 83 (7), 3923-3925, (1998)
36.
"Nonuniform vertical
Charge Transport and Relaxation in Quantum Well Infrared Detectors",
(A. G. U. Perera, V. G. Sylvestrov, S. G. Matsik, H. C. Liu, M. Buchanan, Z. R.
Wasilewski and M. Ershov) J. Appl. Phys., 83 (2), 991-997, (1998)
35.
"Effect of
i layer Parameters on the Performance of Si n-i-n Homojunction Far Infrared
Detectors", (H. X. Yuan and A. G. U. Perera) IEEE Transactions on
Electron Devices, 44 (12), 2180, (1997).
34.
"Bias
Effects in High Performance GaAs Homojunction Far infrared Detectors",
(W. Z. Shen, A. G. U. Perera, H. C. Liu, M. Buchanan, and W. J. Schaff),
Applied Physics Letters, 71, 2677, (1997)
33.
"Far-infrared
Free Hole Absorption in Epitaxial Silicon Films for Homojunction Detectors",
(A. G. U. Perera, W. Z. Shen, W. C. Mallard, M. O. Tanner and K. L. Wang),
Applied Physics Letters, 71 (4), 515-517, (1997) (Full paper in PDF
format)
32.
"A
Spectroscopic Study of GaAs HIWIP Far infrared Detectors", (W. Z. Shen,
A. G. U. Perera, H. X. Yuan, S. K. Gamage, H. C. Liu, M. Buchanan, and W. J.
Schaff) Infrared Physics and Technology, 38, 133-138, (1997). (Full paper
in PDF format)
31.
"GaAs
Multilayer p-i FIR detectors", (A. G. U. Perera, H. X. Yuan, S. K.
Gamage, W. Z. Shen, H. C. Liu, M. Buchanan, and W. J. Schaff), J. Appl. Phys.
81 (7), 3316-3319, (1997) (Full paper in PDF
format)
30.
"Space
Charge limited conduction in Si n-i-n Homojunction Far Infrared Detectors",
(H. X. Yuan and A. G. U. Perera) J. Appl. Phys, 79 (8), 4418-4425, (1996) ( Full paper in PDF
format)
29.
"Space
charge analysis of Si n+-i structures with application to
far-infrared detectors", (H. X. Yuan and A. G. U. Perera) Solid-State
Electronics, 39 (5),
28.
"Resonant
Tunneling Times in Superlattice Structures", (J. W. Choe, H. Hwang, A.
G. U. Perera, S. G. Matsik and M. H. Francombe) J. Appl. Phys, 79 (10),
7510-7513, (1996) (Full
paper in PDF format)
27.
"Space Charge
Analysis leading to Spontaneous Pulsing in Quantum Well Structures"
(A. G. U. Perera and S. G. Matsik), Applied Physics Letters, 67, 962-964 (1995)
(Full paper in PDF
format)
26.
"Homojunction
Interfacial Workfunction Internal Photoemission (HIWIP) Infrared Detectors",
(A. G. U. Perera) Growth and Characterization of Materials for Infrared
Detectors, SPIE's International Symposium on Optical Science, Engineering and
Instrumentation, 2554, 143-158, (1995).
25.
"Chaotic to
Periodic Spontaneous Pulsing in Current Driven Silicon p-i-n Structures",
(A. G. U. Perera, and S. G. Matsik) Physica D, 84, 615-625, (1995)
24.
"Dark Current
Analysis of Homojunction Infrared Detectors" (H. X Yuan and A. G. U.
Perera) Applied Physics Letters, 66, 2262-2264, (1995)
23.
"Homojunction
Internal Photoemission Far-Infrared Detectors: Photoresponse Performance
Analysis", (A. G. U. Perera, H. X. Yuan and M. H. Francombe) J. Appl.
Phys, 77 (2), 915-924, (1995) (Full paper in PDF format)
22.
"Space Charge
analysis in quantum well structures leading to spontaneous pulsing",
(A. G. U. Perera and S. G. Matsik), Applied Physics letters, 67 (7), 962-964
(1995) (Full paper in
PDF format)
21.
"Device model for pulsing in Silicon p-i-n Structures",
(A. G. U. Perera and S. Matsik) Applied Physics Letters, 64 (7), 878-880,
(1994) (Full Paper in
PDF Format)
20.
"Evidence
For LWIR Emission Using Intersubband Transitions in GaAs/AlGaAs MQW Structures",
(A. G. U. Perera) Proc. of the NATO Adv. Res. Workshop, 'Quantum Well
Intersubband Transition Physics and Devices', editors., H. C. Liu et al.,
525-532, Kluwer Academic Publishers, Netherlands, (1994).
19.
"Far Infrared
Detection with a Si p-i interface and Multilayer Structures", (A. G.
U. Perera, J. W Choe, M. H. Francombe, R. E. Sherriff and R. P. Devaty)
Superlattices and Microstructures, 14, 123-128, (1993).
18.
"A Search
for Fractional Charges in Silicon Using an Optoelectronic Technique"
(A. G. U. Perera, S. Betarbet, Byungsung O and D. Coon) Phys. Rev. Lett., 70,
1053-1056, (1993).
17.
"GaAs/AlGaAs
Superlattice Miniband Detector with 14.5 mm Peak Response" (K. M. S.
V. Bandara, J. W. Choe, M. H. Francombe, A. G. U. Perera, and Y. F. Lin)
Applied Physics Letters, 60 (24), 3022-3024, (1992) (Full paper in PDF format)
16.
"Far Infrared
Photoelectric Thresholds of Extrinsic Semiconductor Photocathodes" (A.
G. U. Perera, R. E. Sherriff, M. H. Francombe, and R. P. Devaty) Applied
Physics Letters, 60 (25), 3168-3170, (1992) (Full Paper in PDF
Format)
15.
"Estimates of
Infrared Intersubband Emission and Its Angular Dependence in GaAs/AlGaAs superlattice
Structures" (J. W. Choe, A. G. U. Perera, M. H. Francombe, and D. D.
Coon) Applied Physics Letters, 59 (1), 54-56, (1991) (Full Paper in PDF Format)
14.
"Integrate-and-Fire
Coding and Hodgkin-Huxley Circuits Employing Silicon p+-n-n+ diodes",
(D. D. Coon and A. G. U. Perera), Neural Networks, 2, 143, (1989).
13.
"Spiketrain
Generation and Current to Frequency Conversion in Silicon Diodes", (D.
D. Coon and A. G. U. Perera), Applied Physics Letters, 55, 478, (1989).
12.
"Interfacial
Work Functions and Extrinsic Silicon Infrared Photocathodes", (D. D.
Coon, R. P. Devaty, A. G. U. Perera and R. E. Sherriff), App. Phys. Lett., 55,
1738, (1989).
11.
"Neuronlike Transient Phenomena in Silicon p-i-n Structures", (D. D.
Coon and A. G. U. Perera), Solid State Electronics, 31, 851, (1988).
10.
"New Hardware for Massive Neural Networks," (D. D. Coon and A. G. U.
Perera), In "Neural Information Processing Systems", 201-210, Edited
by Dana Z. Anderson, A. I. P., New York, (198
9.
"High Speed
Switching and Power Dissipation in Heterojunction Double Barrier Diodes",
(D. D. Coon and A. G. U. Perera) Superlattices and Microstructures, 4, 713,
(1988).
8.
"Observations of Complex Nonlinear Behavior in the Neuronlike Output of
Cryogenically Cooled Silicon Devices", (Ma Shining, A. G. U. Perera and D.
D. Coon), Chin. Phys. Lett., 5, 513, (1988).
7.
"Farey Fraction
Frequency Modulation in the Neuronlike Output of Silicon p-i-n Diodes at 4.2K",
(D. D. Coon, S. N. Ma and A. G. U. Perera), Phys. Rev. Lett., 58, 1139, (1987).
6.
"Semiconductor
Electronic Concepts for Neural Network Emulation", (D. D. Coon and A.
G. U. Perera), International Journal of Electronics, 63, 61, (1987).
5.
"Mode Locked
Infrared Sensor", (D. D. Coon and A. G. U. Perera), App. Phys. Lett.,
51, 1086, (1987).
4.
"Integrate-and-Fire
Infrared Detectors", (D. D. Coon and A. G. U. Perera), App. Phys.
Lett., 51, 1711, (1987).
3.
"Parallel
Asynchronous Focal Plane Array Processing", (D. D. Coon and A. G. U.
Perera), International Journal of Infrared and Millimeter Waves, 9, 1037,
(1987).
2.
"Spectral
Information Coding by Infrared Photoreceptors", (D. D. Coon and A. G.
U. Perera), International Journal of Infrared and Millimeter Waves, 7, 1571,
(1986).
1.
"Spectral
Response of an Injection Mode Infrared Detector", (D. D. Coon and A.
G. U. Perera), Solid State Electronics, 29, 929, (1986).
Return to Physics & Astronomy
Homepage
1. “Colitis screening
using IR spectroscopy of serum samples”
A. G. Unil Perera, Hemendra Ghimire,
Kelum Perera, Emilie Viennois and Didier Merlin, Eleventh International
Conference on Sensing Technology (ICST 2017 Dec 4 (pp. 1-4. IEEE.
2. “An application for
Colitis Prescreening” Hemendra Ghimire,
Kelum Perera, A. G. Unil Perera, Bulletin of the American Physical
Society. (2017 Nov 17:62.
3. “Infrared
spectroscopy as a screening technique for colitis” Jitto Titus, Hemendra
Ghimire, Emilie Viennois, Didier Merlin, A. G. Unil Perera, Proc. SPIE
10247, Bio-MEMS and Medical Microdevices III, 102470C (May 30, 2017). doi:10.1117/12.2264462
4. “Mid-infrared
detection in p-GaAs/AlGaAs heterostructures with a current blocking barrier”,
Dilip Chauhan , A. G. Unil Perera , Lianhe Li , Li Chen, Edmund H. Linfield, Proc.
SPIE 10036, Fourth Conference on Sensors, MEMS, and Electro-Optic Systems,
1003615 (February 3, 2017). doi:10.1117/12.2242898
5. “Infrared
photodetectors with wavelength extension beyond the spectral limit”, A. G.
U. Perera, Dilip Chauhan, Yan-Feng
Lao, Lianhe Li, Suraj P. Khanna, Edmund H. Linfield, Proc. SPIE 9844,
Automatic Target Recognition XXVI, 98440X ( 2016). (INVITED)
6. “Hot
Carrier Infrared Photodetectors”, 2015 IEEE Summer Topicals Meeting Series (SUM
2015) Nassau, Bahamas 13-15 July 2015, pp 61, ISBN 978-1-4799-7469-6.
7. “Tunable
hot-carrier photodetectors for terahertz frequency operation”, A. G. Unil
Perera, Yan-Feng Lao, L. H. Li, S. P. Khanna, and E. H. Linfield, Proc.
26th International Symposium on Space Terahertz Technology, 16-18 Mar
2015, Cambridge, MA, USA, 129 - 132. ISBN 978151080933.
8. "Hot-carrier
photodetector beyond spectral limit," A. G. U. Perera,Y. F. Lao , P.
K. D. D. P. Pitigala , S. P. Khanna , L. H. Li , E. H. Linfield ,H. C. Liu,
2013 IEEE Photonics Conference, Bellevue, WA, 2013, pp. 348-349. doi:
10.1109/IPCon.2013.6656580
9.
“Effect of V/III molar ratio on the structural
and optical properties of InN epilayers grown by HPCVD” Ramazan Atalay, Max
Bueglera, Sampath Gamagea, Matara K. I. Senevirathna, Liqin Su, Andrew G.
Melton, Axel Hoffmann, A. G. Unil Perera, Ian T. Ferguson, and Nikolaus Dietz,
Proc. SPIE 8484-33, 196 (2012)
10. “Room
temperature photovoltaic response of split-off band infrared detectors with a
graded barrier”, A. G. U. Perera, S. G. Matsik, D. P. Pitigala, Y. F. Lao, S. P.
Khanna, L. H. Li, E. H. Linfield, Z. R. Wasilewski, M. Buchanan, X. H. Wu, and
H. C. Liu, Proc. SPIE 7945, 79451I-1 (2011).
11.
“High operating temperature spin-split off band
Infrared detectors”, A. G. U. Perera, S. G. Matsik, M. S. Shishodia, and P. K.
D. D. P. Pitigala, Proc. SPIE 7660-88, 2010. (INVITED)
12.
“Performance enhancements of dye sensitized
nanostructured solar cells using PbS quantum dots”, P. K. D. D. P Pitigala, K.
Tennakone, A. G. U. Perera. Proc. SPIE Vol. 7683, 768318-1-5, 2010.
13.
"GaAs and GaN Based High Operating
Temperature Spin Split-off band Infrared Detectors", A. G. U. Perera, S.
G. Matsik, M. S. Shishodia, and R. C. Jayasinghe, Proc. SPIE, 7608, 760823-1 -
760823-11, 2010. (INVITED)
14.
“GaN-Based Heterojunction Structures for Ultraviolet/Infrared
Dual-Band Detection” Perera, A.G.U.; Jayasinghe, R.C.; Ariyawansa, G.; Dietz,
N.; Matsik, S.G.; Ferguson, I.T.; Hui Chun Liu;, ‘Nanotechnology Materials and
Devices Conference, 2009. NMDC '09. IEEE’, 142 – 147. (IEEE Xplore, doi:
10.1109/NMDC.2009.5167529)
15.
“THz Sensors Based on Spin Orbit Split off
Levels”, (Perera, A. G. U; Jayaweera, P. V. V; Matsik, S. G;), ‘2009 34th
International Conference on Infrared, Millimeter, and Terahertz Waves
(IRMMW-THz 2009)’, 1, 111-112 . (IEEE Xplore, doi: 10.1109/ICIMW.2009.5325760)
16.
“Multi-Color Infrared Sensing with Superlattice
Quantum Dot Structures and Absorption Enhancement Using Surface Plasmons",
A. G. U. Perera, G. Ariyawansa, M. S. Shishodia, G. Huang, P. Bhattacharya, M.
Buchanan, Z. R. Wasilewski, and H. C. Liu, ‘Sensors, 2009 IEEE’, 1552 – 1556,
2009. (IEEE Xplore, doi: 10.1109/ICSENS.2009.5398479)
17.
“Ultraviolet-to-Infrared
Dual-Band Detectors Based on Quantum Dot and Heterojunction Structures” (A. G.
U. Perera), SPIE, 6984, 698432 (2008). (INVITED)
18.
“Plasmon
Enhancements for FIR Detection”, S. G. Matsik, P. V. V. Jayaweera, (A. G.
U. Perera, D. H. Huang, H. C. Liu, and M. Buchanan), Sensors, 2007 IEEE, 431 -
434 (2007). (Full
paper in PDF format)
19.
“Tunneling
Quantum Dot Sensors for Multi-Band Infrared and Terahertz Radiation Detection”,
(G. Ariyawansa, S. Matsik, V. Apalkov, A. G. U. Perera, X. Su, and P.
Bhattacharya), Sensors, 2007 IEEE, 503 - 506 (2007). (Full
paper in PDF format)
20.
“Single
and Multi Emitter Terahertz Detectors Using n-Type GaAs/AlGaAs Heterostructures”,
(A. Weerasekara, R. C. Jayasinghe, M. B. M. Rinzan, S. G. Matsik, A. G. U.
Perera, M. Buchanan, H. C. Liu, G. von Winckel, A. Stintz, S. Krishna), Sensors,
2007 IEEE, 507 - 510 (2007). (Full
paper in PDF format)
21.
“Dual band HEIWIP detectors with nitride
materials”, (A. G. U. Perera, G. Ariyawansa, M. Alevli,
22.
“III-V Based THz Detectors and
Plasmon Effects” (A. G. U. Perera) SPIE, 6479, 64790O, (2007) .(INVITED)
23.
"Performance improvements of
ultraviolet/infrared dual-band detectors"(A. G. U. Perera, G. Ariyawansa,
M. B. M. Rinzan, M. Stevens, M. Alevli, N.Dietz, S. G. Matsik, A. Asghar, I. T.
Ferguson, H. Luo, A. Bezinger, H. C. Liu) QWIP2006 Proceedings June 18-24,
2006.
24.
"Multi-color tunneling quantum dot infrared
photodetectors operating at room temperature" (G. Ariyawansa, A. G. U.
Perera, X. H. Su, S. Chakrabarti,and P. Bhattacharya) QWIP2006 Proceedings June
18-24, 2006.
25.
"1/f Noise in Dye-sensitized Solar Cells
and NIR Photon Detectors", (P.V.V. Jayaweera, P.K.D.D.P. Pitigala, M.K.I.
Seneviratne, A.G.U. Perera and K.Tennakone) QWIP2006 proceedings June
18-24 2006
26.
"High Operating
Temperature Split-off Band Infrared Detectors", (A. G. U. Perera, S. G.
Matsik, P. V. V. Jayaweera, K. Tennakone, H. C. Liu, M. Buchanan G. Von
Winckel, A. Stintz, and S. Krishna) QWIP2006 proceedings June 18-24
2006
27.
"Si doped n- type GaAs/AlGaAs Terahertz
Detectors", (A. Weerasekara, R. Jayasinghe, M. B. M. Rinzan, S. G. Matsik,
and, A. G. U. Perera, H. C. Liu, M. Buchanan, G. Von Winckel, A. Stintz and S.
Krishna,) QWIP2006 proceedings June 18-24 2006
28.
“Heterojunction
Detectors for THz Applications”, (A. G. U. Perera) SPIE Conference on Optics
East 2005, (2005). (INVITED)
29.
“Quantum Structures
for Multiband Photon Detection”, (A. G. U. Perera) SPIE Conference on
Infrared Photoelectronics, 5957, 59570W-1, (2005).(INVITED) (Full
paper in PDF format)
30.
"Heterojunction Far Infrared Photodetectors
with a Cutoff Wavelength at 70 Microns", (A. G. U. Perera, S. G. Matsik,
V. Y. Letov, B. Yaldiz, H. C. Liu, A. Shen, M. Gao, Z. R. Wasilewski, M.
Buchanan, and S. Rolfe) SPIE, 4288, 371-378, (2001).
31.
"Low Dark Current HIWIP Detectors with
Resonance Cavity Effect", (A. G. U. Perera, A. L. Korotkov, W. Z. Shen, H.
C. Liu, and M. Buchanan), First Georgia Tech Conference on Nanoscience and
Nanotechnology, P89, Oct 16-18, (2000).
32.
"Negative Capacitance and Noise Issues in
HIWIP Structures", (A. G. U. Perera, W. Z. Shen, H. C. Liu, M. Buchanan and W. J. Schaff) Proceedings of
ECS, 98-21 , 194 ,(1999), (INVITED)
33.
"Novel far-infrared detectors for space
applications", (A. G. U. Perera, W. Z. Shen, H. C. Liu, M. Buchanan and W.
Schaff) SPIE, 3725, 254-259, (1998).
34.
"Si Homojunction Internal Photoemission
Far-Infrared Detectors", (A. G. U. Perera, W. Z. Shen, H. C. Liu, M.
Buchanan, M. O. Tanner and K. L. Wang) SPIE, 3553, 154-159, (1998).
35.
"Barrier
Resonances and Capacitances in MQW IR Detectors", (A. G. U. Perera, V. G.
Sylvestrov, S. G. Matsik, H. C. Liu, M. Buchanan, Z. R. Wasilewski)
Electrochemical Society Proceedings PV 97-33, 132-143, (1998).((INVITED)
36.
"GaAs Homojunction Far-Infrared Detectors
for Astronomy Applications", (A. G. U. Perera, W. Z. Shen, M.H. Francombe,
M. Shure, H. C. Liu, M. Buchanan and W. Schaff) SPIE, 3354, 39-47, (1998)
37.
"High performance GaAs Homojunction Far
Infrared Detectors", (A. G. U. Perera, W. Z. Shen, H. C. Liu, M. Buchanan
and W. Schaff) SPIE, 3287, 280-286,
(1998).
38.
"Free carrier Absorption in P-type
epitaxial Si and GaAs Films for Far Infrared Detection", (A. G. U. Perera,
W. Z. Shen, M. O. Tanner, K. L. Wang, and W. Schaff) MRS Symposium Proceedings,
484, 199-204, (1998).
39.
"Homojunction Interfacial Workfunction Internal
Photoemission (HIWIP) Infrared Detectors", (A. G. U. Perera) Growth and
Characterization of Materials for Infrared Detectors, SPIE, 2554, 143-158,
(1995). (INVITED)
40.
"GaAs Homojunction
Interfacial Workfunction Internal Photoemission Far Infrared Detectors",
(H. X. Yuan, A. G. U. Perera, M. H. Francombe, S. K. Gamage, H. C. Liu, M.
Buchanan and W. J. Schaff) Infrared Detectors for Remote sensing: Physics,
Materials, and Devices, Proc. SPIE, 2816, 90, (1996).
41.
"Novel Infrared
Detector using Spontaneous Pulsing in Multi Quantum Well Structures",
(A. G. U. Perera, S. G. Matsik and M. H. Francombe) Infrared Detectors and
Focal Plane Arrays, Proc. SPIE, 2746, 142, (1996).
42.
"Pulsing Silicon (Relaxation Oscillator)
Neural Nets for Image Processing and Nonlinear Dynamics", (A. G. U.
Perera) IASTED International Conference on Modeling and Simulation, 26-28 July
1995, Colombo, Sri Lanka, 229-231, edited by C. W. De Silva and M. H. Hamza.
43.
"Nonlinear Dynamics
in a Parallel Neural Network Processor", (A. G. U. Perera, S. G.
Matsik and S. Betarbet) Visual Information Processing IV, Proceedings SPIE,
2488, 363-372, (1995).
44.
"Novel Homojunction
Internal Photoemission Far Infrared Detectors", (A. G. U. Perera, H.
X. Yuan J. W. Choe and M. H. Francombe ) Proceedings of SPIE, Infrared
Detectors and Instrumentation for Astronomy, 2475, 76-87, (1995).
45.
"Spontaneous Pulsing
in Semiconductor Homo and Heterostructures for IR Detectors", (A.
G. U. Perera, S. G. Matsik and M. H. Francombe) Proceedings of the third
International Symposium on "Long Wavelength IR detectors and Arrays:
Physics and Applications III", edited by S. S. Li, M. Z. Tidrow, H. C. Liu
and W. A. Beck, PV 95-28, 98-109,(1995).
46.
"Multilayer Homojunctions as Tunable Far
Infrared Detectors", (A. G. U. Perera, H. X. Yuan, M. H. Francombe and J.
W. Choe) Proceedings of the First International Symposium on Long Wavelength IR
detectors and Arrays: Physics and Applications and the Nineteenth State of the
Art Program on Compound Semiconductors (SOTAPOCS XIX) editors., F. Radpour and
V. R. McCray, 36-45, (1995).
47.
"Homojunction Infrared Detector
Classification and Analysis", (A. G. U. Perera, H. X. Yuan, M. H.
Francombe) Proceedings of the Second International Symposium on "Long
Wavelength IR detectors and Arrays: Physics and Applications", edited by
V. Swaminathan, Sheng Li, T. S. Faska, H. C. Liu and F. Radpour, PV 94-30,
30-41, (1994).
48.
"Bifurcations and Chaos in Pulsing Si
Neurons", (A. G. U. Perera, S. R. Betarbet and S. G. Matsik) Proceedings
of the World Congress on Neural Networks 1994, Lawrence Erlbaum Associates,
N.J. IV 704- IV 704, (1994).
49.
"Nonlinear Dynamics in pulsing artificial
neural networks", (A. G. U. Perera and S. R. Betarbet) Proceedings of
NOLTA'93, 4, 1311-1314, Dec 5-10 (1993).
50.
"Multispectral Transient Sensing Using
Retinal Concepts in a Parallel Processor", (A. G. U. Perera, S. R.
Betarbet and M. H. Francombe) Proceedings of the World Congress on Neural
Networks 1993, Lawrence Erlbaum Associates, N.J. IV.835 - IV 838, (1993).
51.
"A Novel Wavelength
Tunable Silicon Detector for Infrared Detection" (A. G. U. Perera, R.
E. Sherriff, M. H. Francombe, and R. P. Devaty), Materials Research Society
Symposium Proceedings, 261, 119-124, April 29-May 1, (1992).
52.
"Photon detection
in Parallel Asynchronous Processing", (D. D. Coon and A. G. U. Perera)
Proceedings of the SPIE's Visual Communications and Image Processing 90, 1360,
1620 Lausanne, Switzerland, Oct 1-4, (1990).
53.
"Parallel
Asynchronous Systems and Image Processing Algorithms", (D. D. Coon and A.
G. U. Perera), NASA Conference Publication 3053, Proceedings of "Visual
Information Processing for Television and Telerobotics", 191, (1989).
Return
to Dr. Perera's
Homepage
Return to Physics &
Astronomy Homepage
2.
“An investigation of transparent conductive
conductive p type copper(I) iodine thin films”, J. Harwell, L. Ajith DeSilva,
T. M.W.J. Bandara, G.R.A. Kumara, A.G.U. Perera, K. Tennekone and Neal Chesnut,
Georgia Journal of Science, Vol. 75, No. 1, Art. 2, page 25 (2017).
3.
“Carrier mobility enhancement of
nano-crystalline semiconductor films: Incorporation of redox -relay species
into the grain boundary interface”, L. A. DeSilva, T. M. W. J. Bandara, B. H.
Hettiarachchi, G. R. A. Kumara, A. G. U. perera, R. M. G. Rajapaksa, K.
Tennakone, American Physical Society (APS) March Meeting 2017, New
Orleans, Louisiana, USA. (Abstract: P38.00014)
4.“p-GaAs/AlGaAs
heterostructures with a current blocking barrier for mid-infrared detection”,
Dilip Chauhan, A. G. Unil Perera, Lianhe Li, Li Chen, Edmund H. Linfield, AVS
63RD International Symposium and Exhibition, November 6-11, 2016,
Nashville, TN, USA.
5.
"Extended threshold photo-detection in
GaAs/AlGaAs split-off detectors at high temperatures” International Conference
on Electronic Materials (IUMRS-ICEM 2016), July 4 - 8, 2016, Nanyang
Technological University, Singapore. (INVITED)
6.
“Tunable hot-carrier photodectector beyond the
spectral limit”, A. G. Unil Perera, Yan-Feng Lao, L. H. Li, S. P. Khanna, and
E. H. Linfield, 8th International Conference on Materials for Advanced
Technologies (ICMAT 2015), 28 June to 03 July, 2015, Singapore.
7.
“ Hot-Carrier Photodetector beyond spectral
limit ”, 2014 Workshop on Innovative Nanoscale Devices and Systems (WINDS),
November 30 – December 5, 2014, Kohala
Coast, Hawaii, USA.
8.
“InAs/GaAs p-type quantum dot and dots-in-well
infrared photodetectors”, OSA Topical Conference: AOM 2014 – The 4th Advances
in optoelectronics and Micro/nano-optics, September 18-20, 2014, Xian, China.
(INVITED)
9.
“InAs/GaAs p-type quantum dot and dots-in-well
infrared photodetectors” The 14th International Conference on Nanotechnology
(IEEE NANO 2014), 33 Gerrard Street West Toronto, ON, Canada, August 18-21,
2014.
10. “InAs/GaAs
p-type quantum dot infrared photodetector”, Quantum Structured Infrared
Photodetector (QSIP) International Conference, Santa Fe, New Mexico, June 29-July
3, 2014.
11. Investigation
Of Low-Cost Cu2o-Cui Based Photovoltaic Devices With Near Infrared Response,
Ryan Landry, P. K. D. D. P. Pitigala, Ajith deSilva and A. G. U. Perera.
Georgia Academy of Science, Vol. 72 (1), 31 (2014).
12. “Low
cost broadband (2-7 micron) infrared circular polarizer based on Ti doped Ag
chiral nanorod structures”, International Symposium on Advanced Nanodevices and
Nanotechnology, 8-13 December Poipu Beach, Kauai, Hawai, 2013.
13. “Split-off
band infrared detectors with Graded Barriers” P. K. D. D. P. Pitigala, Y.F.
Lao, A. G. U. Perera, L. Li, E. H. Linfield, H. C. Liu, 80th Annual Meeting of
the APS Southeastern Section, Bulletin of the American Physical Society Vol.
58, Number 17.
14. “Oblique
angle transmission spectroscopic measurements on InGaN/GaN dot-in-a-wire
heterostructures” Jitto Titus, Hieu Nguyen, Zetian Mi, Unil Perera, 80th Annual
Meeting of the APS Southeastern Section, Bulletin of the American Physical
Society Vol. 58, Number 17.
15. “Graded-barrier
heterostructures for photovoltaic split-off infrared detection”, IEEE Photonics
2012 (IPC12), Burlingame, California, September 23 - 27, 2012. (INVITED)
16. “Demonstration
of multicolour In(Ga)As/GaAs-based quantum dot infrared photoetectors with
quaternary (InAlGaAs) capping operating at low bias voltage”, Saumya Sengupta,
Sourav Adhikary, Subhananda Chakrabarti, Yigit Aytac, Unil Perera, SPIE
8456-20, Optics + Photonics 2012, Technical Program, session 4, page 61.
17. Growth
and characterization of indium-rich InGaN epilayers grown by high-pressure CVD
(Invited Paper), Nikolaus Dietz, Ramazan Atalay, Sampath Gamage, Kasuni
Nanayakkara, Rasanga Samaraweera, Matara K. I. Senevirathna, A.G.U. Perera,
Andrew G. Melton, Ian T. Ferguson, SPIE 8484-30, Optics + Photonics 2012,
Technical Program, Session 8, page 151.
18. “Surface
plasmon resonance based infrared photo-detectors” Y. Aytac and A.G.U. Perera,
American Physical Society (APS) April Meeting 2012,BAPS 57(3), Session
T14.00006, page 210. Abstract ID: BAPS.2012.APR.T14.6
19. “Graded Barrier for Photovoltaic Operation of
p-type GaAs/AlGaAsHeterostructure” P. K. D. D. P. Pitigala, S. G. Matsik, A.G.U
Perera, S.P. Khanna, L. H. Li, E. H. Linfield, Z. R. Wasilewski, M. Buchanan,
and H. C. Liu, American Physical Society (APS) April Meeting 2012,BAPS 57(3),
Session E1.00092, page 83.
Abstract ID: BAPS.2012.APR.E1.92
20. “Optimization
of TiO2/SiO2 Nanorod Multilayers for High Angle of Incidence Anti-Reflection
Coatings for Solar Cells” R. Jayasinghe, A. G. U. Perera, Y. Zhao, American
Physical Society (APS) April Meeting 2012, BAPS 57(3), Session E1.00093, page
84.
Abstract ID: BAPS.2012.APR.E1.93
21. “Visible to near infra red absorption in
natural dye (Mondo Grass Berry) for Dye Sensitized Solar Cell” P. K. D. D. P.
Pitigala, L.A.A. De Silva, A.G.U. Perera, American Physical Society (APS) April
Meeting 2012, BAPS 57(3), Session E1.00094, page 84.
Abstract ID: BAPS.2012.APR.E1.94
22. “Selectable Multi Band UV- IR sensing with
Nanostructures”, The IV International Nanotechnology Forum RUSNANOTECH 2011,
Nanoelectronics and Nanophotonics session, Moscow, Russia, October 26-28, 2011.
(INVITED)
23. “Multiband
Sensing with Arsenides and Nitrides”, IEEE Photonics 20011 (IPC11), Arlington,
Virginia, October 9-13, 2011. (INVITED)
24. “Optical characterization of p-doped InP
epitaxial layers in mid and far infrared region”, (R.C. Jayasinghe, Y.F. Lao,
A. G. U. Perera, M. Hammar, C.F. Cao, and H. Wu) American Physical Society
(APS) March Meeting 2011, BAPS 56, Session W11-2, page 531.
25. “Room
Temperature Photovoltaic Operation of Graded Barrier Split-Off Band Infrared
Detectors”, (A. G. U. Perera, S. G. Matsik, D.P. Pitigala, E. Linfield, and H.
C. Liu), Quantum Sensing and Nanophotonic Devices VIII, , SPIE Photonics West
2011-Technical Summaries, 7945-56, Session 9, page 164.(INVITED)
26. “Polarization
Agile selectable Multiband Infrared sensors”, International Conference on
Materials for Advanced Technologies (ICMAT 2011) and the 5th Asian Conference
on Crystal Growth and Crystal Technology (CGCT-5), Singapore, June 26 - July 1,
2011. (INVITED)
27. “Photodetectors
for Wavelength-Selectable Multi-Band Sensing”, 7th international conference on
Low Dimensional Structures and Devices (LDSD 2011), Nuevo Yucatan, Mexican
Caribbean, May 22-27, 2011.
28. “Effects
of Graded Barriers on the Operation of Split-Off Band Infrared Detectors”, (A.
G. U. Perera, S. G. Matsik, M. S. Shishodia, P. K. D. D. P. Pitigala, R. C.
Jayasinghe, E. Linfield, and H.C. Liu), QSIP (Quantum Structure Infrared
Photodetector) 2010, Istanbul, Turkey, August 15 -20, 2010.
29. “UV
to Terahertz Detector Development”, (A. G. U. Perera), The International
Symposium on Optoelectronics Materials and Devices 2010, Chicago, IL, USA, July
12 - 13, 2010.
30. "Performance
enhancements of dye sensitized nanostructured solar cells using PbS quantum
dots", P. K. D. D. P. Pitigala, K. Tennakone, and A. G. U. Perera, SPIE
(Defense, Security, and Sensing) 2010, 7683-45, Orlando, Florida, April 05 -
09, 2010.
31. "Investigation
of the Detection and Identification of Herpes Simplex Virus I by FTIR
Spectroscopy", J. Titus, C. Filfili, J. Hilliard, and A.G.U. Perera, Sixth
Annual Molecular Basis of Disease (MBD) Research Day, May 21, 2010, Georgia
State University.
32. "Simultaneous
Detection of Ultraviolet and Infrared Radiation from a Single Detector",
S. G. Matsik, G. Ariyawansa, and A. G. U. Perera, NanoTechnology for Defense
Conference 2010, Atlanta, Georgia, May 3-6, 2010.
33. "GaAs
and GaN Based High Operating Temperature Spin Split-off band Infrared
Detectors", A. G. U. Perera, S. G. Matsik, M. S. Shishodia, and R. C.
Jayasinghe, SPIE Photonics West 2010, San Francisco, January 23 – 28, 2010