Publications

Found 645 results
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2009
Tyagi, A., F. Wu, E. C. Young, A. Chakraborty, H. Ohta, R. Bhat, K. Fujito, S. P. DenBaars, S. Nakamura, and J. S. Speck, "Partial strain relaxation via misfit dislocation generation at heterointerfaces in (Al, In) GaN epitaxial layers grown on semipolar (11 2\= 2) GaN free standing substrates", Applied Physics Letters, vol. 95, no. 25: AIP, pp. 251905, 2009.
Shen, P. H., G. Garrett, M. Wraback, H. Zhong, A. Tyagi, J. Speck, and S. Nakamura, "Piezoelectric Field in Semi-Polar InGaN/GaN Quantum Wells", Meeting Abstracts, no. 21: The Electrochemical Society, pp. 885–885, 2009.
Iso, K., H. Yamada, M. Saito, A. Hirai, S. P. DenBaars, J. S. Speck, and S. Nakamura, Planar nonpolar m-plane group iii-nitride films grown on miscut substrates, 2009.
Pimputkar, S., J. S. Speck, S. P. DenBaars, and S. Nakamura, "Prospects for LED lighting", Nature photonics, vol. 3, no. 4: Nature Publishing Group, pp. 180, 2009.
Masui, H., M. Schmidt, N. Fellows, H. Yamada, K. Iso, J. S. Speck, S. Nakamura, and S. P. DenBaars, "Recent progress in nonpolar LEDs as polarized light emitters", physica status solidi (a), vol. 206, no. 2: Wiley Online Library, pp. 203–205, 2009.
Masui, H., D. S. Kamber, S. E. Brinkley, F. Wu, T. J. Baker, H. Zhong, M. Iza, J. S. Speck, S. Nakamura, and S. P. DenBaars, "Spontaneous formation of ${$1 1Ø 0 1$}$ InGaN quantum wells on a (1 1 2Ø 2) GaN template and their electroluminescence characteristics", Semiconductor Science and Technology, vol. 25, no. 1: IOP Publishing, pp. 015003, 2009.
Nagata, T., G. Koblmüller, O. Bierwagen, C. S. Gallinat, and J. S. Speck, "Surface structure and chemical states of a-plane and c-plane InN films", Applied Physics Letters, vol. 95, no. 13: AIP, pp. 132104, 2009.
Shen, H., M. Wraback, H. Zhong, A. Tyagi, SP. DenBaars, S. Nakamura, and JS. Speck, "Unambiguous evidence of the existence of polarization field crossover in a semipolar InGaN/GaN single quantum well", Applied Physics Letters, vol. 95, no. 3: AIP, pp. 033503, 2009.
Uedono, A., S. Ishibashi, S. Keller, C. Moe, P. Cantu, TM. Katona, DS. Kamber, Y. Wu, E. Letts, SA. Newman, et al., "Vacancy-oxygen complexes and their optical properties in AlN epitaxial films studied by positron annihilation", Journal of Applied Physics, vol. 105, no. 5: AIP, pp. 054501, 2009.
2008
Hashimoto, T., F. Wu, J. S. Speck, and S. Nakamura, "Ammonothermal growth of bulk GaN", Journal of Crystal Growth, vol. 310, no. 17: Elsevier, pp. 3907–3910, 2008.
Sato, H., H. Hirasawa, H. Asamizu, N. Fellows, A. Tyagi, M. Saito, K. Fujito, J. S. Speck, S. P. DenBaars, and S. Nakamura, "The Blue Laser Diode'The Blue Laser Diode', 1997", Journal of light and visual environment, vol. 32, no. 2, pp. 107–110, 2008.
Law, JJM., ET. Yu, BA. Haskell, PT. Fini, S. Nakamura, JS. Speck, and SP. DenBaars, "Characterization of nanoscale electronic structure in nonpolar GaN using scanning capacitance microscopy", Journal of Applied Physics, vol. 103, no. 1: AIP, pp. 014305, 2008.
Yamada, H., K. Iso, M. Saito, H. Hirasawa, N. Fellows, H. Masui, K. Fujito, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Comparison of InGaN/GaN light emitting diodes grown on m-plane and a-plane bulk GaN substrates", physica status solidi (RRL)-Rapid Research Letters, vol. 2, no. 2: Wiley Online Library, pp. 89–91, 2008.
Kim, K. Choong, M. C. Schmidt, F. Wu, A. Hirai, M. B. McLaurin, S. P. DenBaars, S. Nakamura, and J. S. Speck, CRYSTAL GROWTH OF M-PLANE AND SEMIPOLAR PLANES OF (Al, In, Ga, B) N ON VARIOUS SUBSTRATES, 2008.
Asamizu, H., M. Saito, K. Fujito, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Demonstration of 426 nm InGaN/GaN laser diodes fabricated on free-standing semipolar (1122) gallium nitride substrates", Applied physics express, vol. 1, no. 9: IOP Publishing, pp. 091102, 2008.
McGroddy, K., A. David, E. Matioli, M. Iza, S. Nakamura, S. DenBaars, JS. Speck, C. Weisbuch, and EL. Hu, "Directional emission control and increased light extraction in GaN photonic crystal light emitting diodes", Applied physics letters, vol. 93, no. 10: AIP, pp. 103502, 2008.
Fehlberg, T. B., C. S. Gallinat, G. A. Umana-Membreno, G. Koblmüller, B. D. Nener, J. S. Speck, and G. Parish, "Effect of MBE growth conditions on multiple electron transport in InN", Journal of Electronic Materials, vol. 37, no. 5: Springer US, pp. 593–596, 2008.
Imer, B., B. Haskell, S. Rajan, S. Keller, U. K. Mishra, S. Nakamura, J. S. Speck, and S. P. DenBaars, "Electrical characterization of low defect density nonpolar (11\= 2 0) a-plane GaN grown with sidewall lateral epitaxial overgrowth (SLEO)", Journal of Materials Research, vol. 23, no. 2: Cambridge University Press, pp. 551–555, 2008.
Imer, B. M., J. S. Speck, S. P. DenBaars, and S. Nakamura, Growth of planar non-polar ${$1-1 0 0$}$ m-plane gallium nitride with metalorganic chemical vapor deposition (MOCVD), 2008.
Sato, H., H. Hirasawa, H. Asamizu, N. Fellows, A. Tyagi, M. Saito, K. Fujito, J. S. Speck, S. P. DenBaars, and S. Nakamura, "High power and high efficiency semipolar InGaN light emitting diodes", Journal of Light & Visual Environment, vol. 32, no. 2: The Illuminating Engineering Institute of Japan, pp. 107–110, 2008.
Chichibu, S. F., A. Uedono, T. Onuma, S. P. DenBaars, U. K. Mishra, J. S. Speck, and S. Nakamura, "Impact of point defects on the luminescence properties of (Al, Ga) N", Materials Science Forum, vol. 590: Trans Tech Publications, pp. 233–248, 2008.
Tyagi, A., H. Zhong, R. B. Chung, D. F. Feezell, M. Saito, K. Fujito, J. S. Speck, S. P. DenBaars, and S. Nakamura, "InGaN/GaN laser diodes on semipolar (10$$\backslash$bar 1$ $$\backslash$bar 1$) bulk GaN substrates", physica status solidi (c), vol. 5, no. 6: WILEY-VCH Verlag, pp. 2108–2110, 2008.
Kim, K-C., M. C. Schmidt, F. Wu, M. B. McLaurin, A. Hirai, S. Nakamura, S. P. DenBaars, and J. S. Speck, "Low extended defect density nonpolar m-plane GaN by sidewall lateral epitaxial overgrowth", Applied Physics Letters, vol. 93, no. 14: AIP, pp. 142108, 2008.
Schaake, C. A., N. A. Fichtenbaum, C. J. Neufeld, S. Keller, S. P. DenBaars, J. S. Speck, and U. K. Mishra, "M-plane InGaN/GaN light emitting diodes fabricated by MOCVD regrowth on c-plane patterned templates", physica status solidi (c), vol. 5, no. 9: Wiley Online Library, pp. 2963–2965, 2008.
Fehlberg, T. B., G. Koblmüller, G. A. Umana-Membreno, C. S. Gallinat, B. D. Nener, J. S. Speck, and G. Parish, "Multiple carrier transport in N-face indium nitride", physica status solidi (b), vol. 245, no. 5: Wiley Online Library, pp. 907–909, 2008.

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