Publications

Found 174 results
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2012
Das, NC., ML. Reed, AV. Sampath, H. Shen, M. Wraback, RM. Farrell, M. Iza, SC. Cruz, , NG. Young, et al., "Anti Reflection (AR) Coating for Indium Gallium Nitride (InGaN) Solar Cells", Army Research Laboratory Report, 08/2012.
Choi, P-P., O. Cojocaru-Mirédin, D. Abou-Ras, R. Caballero, D. Raabe, V. S. Smentkowski, C. Gyung Park, G. Ho Gu, B. Mazumder, M. Hoi Wong, et al., "Atom probe tomography of compound semiconductors for photovoltaic and light-emitting device applications", Microscopy Today, vol. 20, no. 3: Cambridge University Press, pp. 18–24, 2012.
Garrett, G. A., P. Rotella, H. Shen, M. Wraback, D. A. Haeger, R. B. Chung, N. Pfaff, E. C. Young, S. P. DenBaars, J. S. Speck, et al., "Carrier dynamics in active regions for ultraviolet optoelectronics grown on thick, relaxed AlGaN on semipolar bulk GaN", physica status solidi (b), vol. 249, no. 3: Wiley Online Library, pp. 507–510, 2012.
Hu, Y-L., R. M. Farrell, C. J. Neufeld, M. Iza, S. C. Cruz, N. Pfaff, D. Simeonov, S. Keller, S. Nakamura, S. P. DenBaars, et al., "Effect of quantum well cap layer thickness on the microstructure and performance of InGaN/GaN solar cells", Applied Physics Letters, vol. 100, no. 16: AIP, pp. 161101, 2012.
Dasgupta, S., F. Wu, J. S. Speck, U. K. Mishra, and others, "Growth and Characterization of N-Polar GaN Films on Si (111) by Plasma Assisted Molecular Beam Epitaxy", Japanese Journal of Applied Physics, vol. 51, no. 11R: IOP Publishing, pp. 115503, 2012.
Das, NC., ML. Reed, AV. Sampath, H. Shen, M. Wraback, RM. Farrell, M. Iza, SC. Cruz, , NG. Young, et al., "Heterogeneous integration of InGaN and Silicon solar cells for enhanced energy harvesting", Photovoltaic Specialists Conference (PVSC), 2012 38th IEEE: IEEE, pp. 003076–003079, 2012.
Zhao, Y., Q. Yan, C-Y. Huang, S-C. Huang, P. Shan Hsu, S. Tanaka, C-C. Pan, Y. Kawaguchi, K. Fujito, C. G. Van de Walle, et al., "Indium incorporation and emission properties of nonpolar and semipolar InGaN quantum wells", Applied Physics Letters, vol. 100, no. 20: AIP, pp. 201108, 2012.
Choi, S-B., S-Y. Bae, D-S. Lee, B. Hyun Kong, H. Koun Cho, J-H. Song, B-J. Ahn, J. F. Keading, S. Nakamura, S. P. DenBaars, et al., "Optical Characterization of Double Peak Behavior in 101Ø1 Semipolar Light-Emitting Diodes on Miscut m-Plane Sapphire Substrates", Japanese Journal of Applied Physics, vol. 51, no. 5R: IOP Publishing, pp. 052101, 2012.
Koslow, I. L., M. T. Hardy, P. Shan Hsu, P-Y. Dang, F. Wu, A. Romanov, Y-R. Wu, E. C. Young, S. Nakamura, J. S. Speck, et al., "Performance and polarization effects in (11 2\= 2) long wavelength light emitting diodes grown on stress relaxed InGaN buffer layers", Applied Physics Letters, vol. 101, no. 12: AIP, pp. 121106, 2012.
Dasgupta, S., J. Lu, J. S. Speck, U. K. Mishra, and others, "Scaled self-aligned N-polar GaN/AlGaN MIS-HEMTs with $ f_ ${$T$}$ $ of 275 GHz", IEEE Electron Device Letters, vol. 33, no. 7: IEEE, pp. 961–963, 2012.
Dasgupta, S., J. Lu, J. S. Speck, U. K. Mishra, and others, "Self-aligned N-polar GaN/InAlN MIS-HEMTs with record extrinsic transconductance of 1105 mS/mm", IEEE Electron Device Letters, vol. 33, no. 6: IEEE, pp. 794–796, 2012.
2011
Farrell, R. M., D. A. Haeger, P. Shan Hsu, M. T. Hardy, K. M. Kelchner, K. Fujito, D. F. Feezell, U. K. Mishra, S. P. DenBaars, J. S. Speck, et al., "AlGaN-cladding-free m-plane InGaN/GaN laser diodes with p-type AlGaN etch stop layers", Applied physics express, vol. 4, no. 9: IOP Publishing, pp. 092105, 2011.
Hsu, P. Shan, J. Sonoda, K. M. Kelchner, A. Tyagi, R. M. Farrell, D. A. Haeger, E. C. Young, A. E. Romanov, K. Fujito, H. Ohta, et al., "Blue InGaN/GaN laser diodes grown on (33$$\backslash$bar 3$\backslash$bar 1$) free-standing GaN substrates", physica status solidi (c), vol. 8, no. 7-8: WILEY-VCH Verlag, pp. 2390–2392, 2011.
Hardy, MT., RM. Farrell, P. S. Hsu, DA. Haeger, K. Kelchner, K. Fujito, A. Chakraborty, DA. Cohen, S. Nakamura, JS. Speck, et al., "Effect of n-AlGaN cleave assistance layers on the morphology of c-plane cleaved facets for m-plane InGaN/GaN laser diodes", physica status solidi (c), vol. 8, no. 7-8: Wiley Online Library, pp. 2226–2228, 2011.
Singisetti, U., M. Hoi Wong, S. Dasgupta, B. Swenson, B. J. Thibeault, J. S. Speck, U. K. Mishra, and others, "Enhancement-mode N-polar GaN MISFETs with self-aligned source/drain regrowth", IEEE Electron Device Letters, vol. 32, no. 2: IEEE, pp. 137–139, 2011.
Dasgupta, S., A. Raman, J. S. Speck, U. K. Mishra, and others, "Experimental demonstration of III-nitride hot-electron transistor with GaN base", IEEE Electron Device Letters, vol. 32, no. 9: IEEE, pp. 1212–1214, 2011.
Dasgupta, S., S. Choi, F. Wu, J. S. Speck, U. K. Mishra, and others, "Growth, structural, and electrical characterizations of N-polar InAlN by plasma-assisted molecular beam epitaxy", Applied physics express, vol. 4, no. 4: IOP Publishing, pp. 045502, 2011.
Matioli, E., C. Neufeld, M. Iza, S. C. Cruz, A. A. Al-Heji, X. Chen, R. M. Farrell, S. Keller, S. DenBaars, U. Mishra, et al., "High internal and external quantum efficiency InGaN/GaN solar cells", Applied Physics Letters, vol. 98, no. 2: AIP, pp. 021102, 2011.
Zhao, Y., S. Tanaka, Q. Yan, C-Y. Huang, R. B. Chung, C-C. Pan, K. Fujito, D. Feezell, C. G. Van de Walle, J. S. Speck, et al., "High optical polarization ratio from semipolar (20 2\= 1\=) blue-green InGaN/GaN light-emitting diodes", Applied physics letters, vol. 99, no. 5: AIP, pp. 051109, 2011.
Raring, J. W., M. C. Schmidt, C. Poblenz, B. Li, Y-C. Chang, M. J. Mondry, Y-. Da Lin, M. R. Krames, R. Craig, J. S. Speck, et al., "High-performance blue and green laser diodes based on nonpolar/semipolar bulk GaN substrates", Gallium Nitride Materials and Devices Vi, vol. 7939: International Society for Optics and Photonics, pp. 79390Y, 2011.
Schmidt, M. C., C. Poblenz, Y-C. Chang, B. Li, M. J. Mondry, J. Iveland, M. R. Krames, R. Craig, J. W. Raring, J. S. Speck, et al., "High-performance blue and green laser diodes based on nonpolar/semipolar GaN substrates", Laser Technology for Defense and Security VII, vol. 8039: International Society for Optics and Photonics, pp. 80390D, 2011.
Farrell, R. M., C. J. Neufeld, S. C. Cruz, NG. Young, M. Iza, J. R. Lang, Y-L. Hu, D. Simeonov, N. Singh, E. E. Perl, et al., "InGaN-Based Solar Cells for Ultrahigh Efficiency Multijunction Solar Cell Applications", UC Solar Symposlum, 2011.
Dasgupta, S., S. Keller, J. S. Speck, U. K. Mishra, and others, "N-Polar GaN/AlN MIS-HEMT With $ f_ ${$$\backslash$rm MAX$}$ $ of 204 GHz for Ka-Band Applications", IEEE Electron Device Letters, vol. 32, no. 12: IEEE, pp. 1683–1685, 2011.
Dasgupta, S., DF. Brown, JS. Speck, UK. Mishra, and others, "Scaling behavior and velocity enhancement in self-aligned N-polar GaN/AlGaN HEMTs with maximum fT of 163 GHz", Device Research Conference (DRC), 2011 69th Annual: IEEE, pp. 141–142, 2011.
Dasgupta, S., D. F. Brown, U. Singisetti, S. Keller, J. S. Speck, U. K. Mishra, and others, "Self-aligned technology for N-polar GaN/Al (Ga) N MIS-HEMTs", IEEE Electron Device Letters, vol. 32, no. 1: IEEE, pp. 33–35, 2011.

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