Publications

Found 384 results
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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.
Poblenz, C., J. S. Speck, and D. S. Kamber, Large-area seed for ammonothermal growth of bulk gallium nitride and method of manufacture, 2011.
Arehart, AR., AC. Malonis, C. Poblenz, Y. Pei, JS. Speck, UK. Mishra, and SA. Ringel, "Next generation defect characterization in nitride HEMTs", physica status solidi (c), vol. 8, no. 7-8: Wiley Online Library, pp. 2242–2244, 2011.
Arehart, AR., AC. Malonis, C. Poblenz, Y. Pei, JS. Speck, UK. Mishra, and SA. Ringel, "Next generation defect characterization in nitride HEMTs", physica status solidi (c), vol. 8, no. 7-8: Wiley Online Library, pp. 2242–2244, 2011.
Pimputkar, S., D. S. Kamber, J. S. Speck, and S. Nakamura, Novel vessel designs and relative placements of the source material and seed crystals with respect to the vessel for the ammonothermal growth of group-iii nitride crystals, 2011.
Brinkley, S. E., Y-. Da Lin, A. Chakraborty, N. Pfaff, D. Cohen, J. S. Speck, S. Nakamura, and S. P. DenBaars, "Polarized spontaneous emission from blue-green m-plane GaN-based light emitting diodes", Applied Physics Letters, vol. 98, no. 1: AIP, pp. 011110, 2011.
Raring, JW., MC. Schmidt, C. Poblenz, Y. Lin, C. Bai, P. Rudy, JS. Speck, SP. DenBaars, and S. Nakamura, "Recent progress in InGaN-based laser diodes fabricated on nonpolar/semipolar substrates", Photonics Conference (PHO), 2011 IEEE: IEEE, pp. 503–504, 2011.
Gao, F., B. Lu, L. Li, S. Kaun, J. S. Speck, C. V. Thompson, and T. Palacios, "Role of oxygen in the OFF-state degradation of AlGaN/GaN high electron mobility transistors", Applied Physics Letters, vol. 99, no. 22: AIP, pp. 223506, 2011.
Roy, T., EX. Zhang, YS. Puzyrev, X. Shen, DM. Fleetwood, RD. Schrimpf, G. Koblmueller, R. Chu, C. Poblenz, N. Fichtenbaum, et al., "Temperature-dependence and microscopic origin of low frequency 1/f noise in GaN/AlGaN high electron mobility transistors", Applied Physics Letters, vol. 99, no. 20: AIP, pp. 203501, 2011.
Roy, T., EX. Zhang, YS. Puzyrev, X. Shen, DM. Fleetwood, RD. Schrimpf, G. Koblmueller, R. Chu, C. Poblenz, N. Fichtenbaum, et al., "Temperature-dependence and microscopic origin of low frequency 1/f noise in GaN/AlGaN high electron mobility transistors", Applied Physics Letters, vol. 99, no. 20: AIP, pp. 203501, 2011.
2012
Haeger, D. A., E. C. Young, R. B. Chung, F. Wu, N. A. Pfaff, M. Tsai, K. Fujito, S. P. DenBaars, J. S. Speck, S. Nakamura, et al., "384 nm laser diode grown on a (20 2\= 1) semipolar relaxed AlGaN buffer layer", Applied Physics Letters, vol. 100, no. 16: AIP, pp. 161107, 2012.
DenBaars, SP., C-C. Pan, N. Pfaff, S. Tanaka, JS. Speck, and S. Nakamura, "Advances in GaN semiconductors for energy efficient solid state lighting", Photonics Conference (IPC), 2012 IEEE: IEEE, pp. 427–428, 2012.
DenBaars, SP., C-C. Pan, N. Pfaff, S. Tanaka, JS. Speck, and S. Nakamura, "Advances in GaN semiconductors for energy efficient solid state lighting", Photonics Conference (IPC), 2012 IEEE: IEEE, pp. 427–428, 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.
Toledo, N. G., D. J. Friedman, R. M. Farrell, E. E. Perl, C-T. Lin, J. E. Bowers, J. S. Speck, and U. K. Mishra, "Design of integrated III-nitride/non-III-nitride tandem photovoltaic devices", Journal of Applied Physics, vol. 111, no. 5: AIP, pp. 054503, 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.
Pimputkar, S., J. S. Speck, and S. Nakamura, Group-iii nitride crystal ammonothermally grown using an initially off-oriented non-polar or semi-polar growth surface of a group-iii nitride seed crystal, 2012.
Pan, C-C., S. Tanaka, F. Wu, Y. Zhao, J. S. Speck, S. Nakamura, S. P. DenBaars, and D. Feezell, "High-power, low-efficiency-droop semipolar (2021) single-quantum-well blue light-emitting diodes", Applied Physics Express, vol. 5, no. 6: IOP Publishing, pp. 062103, 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.
Chung, R. B., H. Tse Chen, C-C. Pan, J. S. Speck, S. P. DenBaars, and S. Nakamura, Method for fabrication of (al, in, ga) nitride based vertical light emitting diodes with enhanced current spreading of n-type electrode, jun # " 7", 2012.
Cardwell, DW., AR. Arehart, C. Poblenz, Y. Pei, JS. Speck, UK. Mishra, SA. Ringel, and JP. Pelz, "Nm-scale measurements of fast surface potential transients in an AlGaN/GaN high electron mobility transistor", Applied Physics Letters, vol. 100, no. 19: AIP, pp. 193507, 2012.
Cardwell, DW., AR. Arehart, C. Poblenz, Y. Pei, JS. Speck, UK. Mishra, SA. Ringel, and JP. Pelz, "Nm-scale measurements of fast surface potential transients in an AlGaN/GaN high electron mobility transistor", Applied Physics Letters, vol. 100, no. 19: AIP, pp. 193507, 2012.
Cardwell, DW., AR. Arehart, C. Poblenz, Y. Pei, JS. Speck, UK. Mishra, SA. Ringel, and JP. Pelz, "Nm-scale measurements of fast surface potential transients in an AlGaN/GaN high electron mobility transistor", Applied Physics Letters, vol. 100, no. 19: AIP, pp. 193507, 2012.
Hodges, C., N. Killat, SW. Kaun, MH. Wong, F. Gao, T. Palacios, UK. Mishra, JS. Speck, D. Wolverson, and M. Kuball, "Optical investigation of degradation mechanisms in AlGaN/GaN high electron mobility transistors: Generation of non-radiative recombination centers", Applied Physics Letters, vol. 100, no. 11: AIP, pp. 112106, 2012.

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