Publications

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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.
Zhang, Z., C. Hurni, A. Arehart, J. Speck, and S. Ringel, "Deep Traps in M-Plane GaN Grown by Ammonia MBE", Minerals, Metals and Materials Society/AIME, 420 Commonwealth Dr., P. O. Box 430 Warrendale PA 15086 United States.[np]. Jun: Minerals, Metals and Materials Society/AIME, 420 Commonwealth Dr., P. O. Box 430 Warrendale PA 15086 United States, 2011.
Huang, C-Y., M. T. Hardy, K. Fujito, D. F. Feezell, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Demonstration of 505 nm laser diodes using wavelength-stable semipolar (20 21) InGaN/GaN quantum wells", Applied Physics Letters, vol. 99, no. 24: AIP, pp. 241115, 2011.
Huang, C-Y., M. T. Hardy, K. Fujito, D. F. Feezell, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Demonstration of 505 nm laser diodes using wavelength-stable semipolar (20 21) InGaN/GaN quantum wells", Applied Physics Letters, vol. 99, no. 24: AIP, pp. 241115, 2011.
Farrell, RM., DA. Haeger, PS. Hsu, K. Fujito, DF. Feezell, SP. DenBaars, JS. Speck, and S. Nakamura, "Determination of internal parameters for AlGaN-cladding-free m-plane InGaN/GaN laser diodes", Applied Physics Letters, vol. 99, no. 17: AIP, pp. 171115, 2011.
Farrell, RM., DA. Haeger, PS. Hsu, K. Fujito, DF. Feezell, SP. DenBaars, JS. Speck, and S. Nakamura, "Determination of internal parameters for AlGaN-cladding-free m-plane InGaN/GaN laser diodes", Applied Physics Letters, vol. 99, no. 17: AIP, pp. 171115, 2011.
Rangel, E., E. Matioli, Y-S. Choi, C. Weisbuch, J. S. Speck, and E. L. Hu, "Directionality control through selective excitation of low-order guided modes in thin-film InGaN photonic crystal light-emitting diodes", Applied physics letters, vol. 98, no. 8: AIP, pp. 081104, 2011.
Miller, N., E. E. Haller, G. Koblmüller, C. Gallinat, J. S. Speck, W. J. Schaff, M. E. Hawkridge, K. Man Yu, and J. W. Ager III, "Effect of charged dislocation scattering on electrical and electrothermal transport in n-type InN", Physical Review B, vol. 84, no. 7: APS, pp. 075315, 2011.
Miller, N., E. E. Haller, G. Koblmüller, C. Gallinat, J. S. Speck, W. J. Schaff, M. E. Hawkridge, K. Man Yu, and J. W. Ager III, "Effect of charged dislocation scattering on electrical and electrothermal transport in n-type InN", Physical Review B, vol. 84, no. 7: APS, pp. 075315, 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.
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.
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.
Mayer, M. A., S. Choi, O. Bierwagen, H. M. Smith III, E. E. Haller, J. S. Speck, and W. Walukiewicz, "Electrical and optical properties of p-type InN", Journal of Applied Physics, vol. 110, no. 12: AIP, pp. 123707, 2011.
Hu, Y-L., S. Kraemer, P. T. Fini, and J. S. Speck, "Extended defect structure of a-plane GaN produced by sidewall lateral epitaxial overgrowth", Journal of Crystal Growth, vol. 331, no. 1: Elsevier, pp. 49–55, 2011.
Haskell, B. A., M. B. McLaurin, S. P. DenBaars, J. Stephen Speck, and S. Nakamura, Growth of planar reduced dislocation density m-plane gallium nitride by hydride vapor phase epitaxy, jun # " 7", 2011.
Haskell, B. A., M. B. McLaurin, S. P. DenBaars, J. Stephen Speck, and S. Nakamura, Growth of planar reduced dislocation density m-plane gallium nitride by hydride vapor phase epitaxy, 2011.
Haskell, B. A., M. D. Craven, P. T. Fini, S. P. DenBaars, J. S. Speck, and S. Nakamura, Growth of reduced dislocation density non-polar gallium nitride, 2011.
Lang, J., C. Neufeld, C. Hurni, S. Cruz, E. Matioli, U. Mishra, and J. Speck, "High External Quantum Efficiency and Fill-Factor InGaN-Based Solar Cells Grown by NH (3)-MBE", Minerals, Metals and Materials Society/AIME, 420 Commonwealth Dr., P. O. Box 430 Warrendale PA 15086 United States.[np]. Jun: Minerals, Metals and Materials Society/AIME, 420 Commonwealth Dr., P. O. Box 430 Warrendale PA 15086 United States, 2011.
Lang, J. R., CJ. Neufeld, CA. Hurni, SC. Cruz, E. Matioli, UK. Mishra, and JS. Speck, "High external quantum efficiency and fill-factor InGaN/GaN heterojunction solar cells grown by NH 3-based molecular beam epitaxy", Applied Physics Letters, vol. 98, no. 13: AIP, pp. 131115, 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.
Farrell, RM., DA. Haeger, PS. Hsu, MC. Schmidt, K. Fujito, DF. Feezell, SP. DenBaars, JS. Speck, and S. Nakamura, "High-power blue-violet AlGaN-cladding-free m-plane InGaN/GaN laser diodes", Applied Physics Letters, vol. 99, no. 17: AIP, pp. 171113, 2011.
Farrell, RM., DA. Haeger, PS. Hsu, MC. Schmidt, K. Fujito, DF. Feezell, SP. DenBaars, JS. Speck, and S. Nakamura, "High-power blue-violet AlGaN-cladding-free m-plane InGaN/GaN laser diodes", Applied Physics Letters, vol. 99, no. 17: AIP, pp. 171113, 2011.
Rangel, E., E. Matioli, J. S. Speck, C. Weisbuch, and E. Hu, "Impact of the vertical layer structure on the emission directionality of thin-film InGaN photonic crystal LEDs", CLEO: Science and Innovations: Optical Society of America, pp. CMA3, 2011.
Huang, C-Y., Q. Yan, Y. Zhao, K. Fujito, D. Feezell, C. G. Van de Walle, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Influence of Mg-doped barriers on semipolar (20 2\= 1) multiple-quantum-well green light-emitting diodes", Applied Physics Letters, vol. 99, no. 14: AIP, pp. 141114, 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.

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