Publications

Found 647 results
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2019
Feneberg, M., C. Lidig, M. E. White, M. Y. Tsai, J. S. Speck, O. Bierwagen, Z. Galazka, and R. Goldhahn, "Anisotropic optical properties of highly doped rutile SnO2: Valence band contributions to the Burstein-Moss shift", APL Materials, vol. 7, pp. 022508, 2019.
Khoury, M., H. Li, H. Zhang, B. Bonef, M. S. Wong, F. Wu, D. Cohen, P. De Mierry, P. Vennéguès, J. S. Speck, et al., "Demonstration of Electrically Injected Semipolar Laser Diodes Grown on Low-Cost and Scalable Sapphire Substrates", ACS Applied Materials & Interfaces, vol. 11, pp. 47106-47111, 2019.
Khoury, M., H. Li, H. Zhang, B. Bonef, M. S. Wong, F. Wu, D. Cohen, P. De Mierry, P. Vennéguès, J. S. Speck, et al., "Demonstration of Electrically Injected Semipolar Laser Diodes Grown on Low-Cost and Scalable Sapphire Substrates", ACS Applied Materials & Interfaces, vol. 11, pp. 47106-47111, 2019.
Myers, D. J., K. Gel, A. I. Alhassan, L. Martinelli, J. Peretti, S. Nakamura, C. Weisbuch, and J. S. Speck, "Direct measurement of hot-carrier generation in a semiconductor barrier heterostructure: Identification of the dominant mechanism for thermal droop", Phys. Rev. B, vol. 100, pp. 125303, Sep, 2019.
Espenlaub, A. C., D. J. Myers, E. C. Young, S. Marcinkevičius, C. Weisbuch, and J. S. Speck, "Evidence of trap-assisted Auger recombination in low radiative efficiency MBE-grown III-nitride LEDs", Journal of Applied Physics, vol. 126, pp. 184502, 2019.
Lheureux, G., S. Mehari, D. Cohen, P. Chan, H. Zhang, K. Hamdy, C. Reilly, R. Anderson, E. Zeitz, R. Seshadri, et al., "GaN High-Power Lasers for solid-state lighting", OSA Advanced Photonics Congress (AP) 2019 (IPR, Networks, NOMA, SPPCom, PVLED): Optical Society of America, 2019.
Fireman, M. N., G. L'Heureux, F. Wu, T. Mates, E. C. Young, and J. S. Speck, "High germanium doping of GaN films by ammonia molecular beam epitaxy", Journal of Crystal Growth, vol. 508, pp. 19 - 23, 2019.
Wang, J., E. Young, B. SaifAddin, C. Zollner, A. Almogbel, M. Fireman, M. Izza, S. Nakamura, S. Denbaars, and J. Speck, "Hybrid III-Nitride Tunnel Junctions for Low Excess Voltage Blue LEDs and UVC LEDs", 2019 Compound Semiconductor Week (CSW), May, 2019.
Saifaddin, B. K., M. Iza, H. Foronda, A. Almogbel, C. J. Zollner, F. Wu, A. Alyamani, A. Albadri, S. Nakamura, S. P. DenBaars, et al., "Impact of roughening density on the light extraction efficiency of thin-film flip-chip ultraviolet LEDs grown on SiC", Opt. Express, vol. 27, pp. A1074–A1083, Aug, 2019.
Mauze, A., Y. Zhang, T. Mates, F. Wu, and J. S. Speck, "Investigation of unintentional Fe incorporation in (010) β-Ga2O3 films grown by plasma-assisted molecular beam epitaxy", Applied Physics Letters, vol. 115, pp. 052102, 2019.
Robertson, C. A., K. S. Qwah, Y.-R. Wu, and J. S. Speck, "Modeling dislocation-related leakage currents in GaN p-n diodes", Journal of Applied Physics, vol. 126, pp. 245705, 2019.
Kudrawiec, R., L. Janicki, W. M. Linhart, M. A. Mayer, I. D. Sharp, S. Choi, O. Bierwagen, J. S. Speck, and W. Walukiewicz, "Photoreflectance and photoinduced microwave reflectance studies of surface band bending in Mg-doped InN", Journal of Applied Physics, vol. 126, pp. 045712, 2019.
Baj, M., L. H. Dmowski, A. Kwiatkowski, J. Przybytek, X. Wang, G. Koblmüller, C. S. Gallinat, and J. S. Speck, "Puzzle of non-surface related 2D electron gas in n-InN epitaxial samples", Journal of Applied Physics, vol. 126, pp. 045705, 2019.
Kamikawa, T., S. Gandrothula, M. Araki, H. Li, V. Bonito Oliva, F. Wu, D. Cohen, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Realization of thin-film m-plane InGaN laser diode fabricated by epitaxial lateral overgrowth and mechanical separation from a reusable growth substrate", Opt. Express, vol. 27, pp. 24717–24723, Aug, 2019.
Zollner, C. J., A. Almogbel, Y. Yao, B. K. SaifAddin, F. Wu, M. Iza, S. P. DenBaars, J. S. Speck, and S. Nakamura, "Reduced dislocation density and residual tension in AlN grown on SiC by metalorganic chemical vapor deposition", Applied Physics Letters, vol. 115, pp. 161101, 2019.
Kang, C. Hong, G. Liu, C. Lee, O. Alkhazragi, J. M. Wagstaff, K-H. Li, F. Alhawaj, T. Khee Ng, J. S. Speck, S. Nakamura, et al., "Semipolar (202̅1̅) InGaN/GaN micro-photodetector for gigabit-per-second visible light communication", Applied Physics Express, vol. 13, pp. 014001, nov, 2019.
Mehari, S., D. A. Cohen, D. L. Becerra, H. Zhang, C. Weisbuch, J. S. Speck, S. Nakamura, and S. P. DenBaars, "Semipolar III-nitride laser diodes for solid-state lighting", Novel In-Plane Semiconductor Lasers XVIII: International Society for Optics and Photonics, 2019.
Wong, M. S., C. Lee, D. J. Myers, D. Hwang, J. A. Kearns, T. Li, J. S. Speck, S. Nakamura, and S. P. DenBaars, "Size-independent peak efficiency of III-nitride micro-light-emitting-diodes using chemical treatment and sidewall passivation", Applied Physics Express, vol. 12, pp. 097004, aug, 2019.
2018
Espenlaub, A. C., A. I. Alhassan, S. Nakamura, C. Weisbuch, and J. S. Speck, "Auger-generated hot carrier current in photo-excited forward biased single quantum well blue light emitting diodes", Applied Physics Letters, vol. 112, no. 14: AIP Publishing, pp. 141106, 2018.
Filoche, M., M. Piccardo, C-K. Li, Y-R. Wu, J. S. Speck, B. Bonef, R. M. Farrell, S. Mayboroda, J-M. Lentali, L. Martinelli, et al., "Carrier localization induced by alloy disorder in nitride devices: theory and experiments (Conference Presentation)", Gallium Nitride Materials and Devices XIII, vol. 10532: International Society for Optics and Photonics, pp. 105320S, 2018.
Reparaz, J. S., P. K. da Silva, A. H. Romero, J. Serrano, M. R. Wagner, G. Callsen, S. J. Choi, J. S. Speck, and A. R. Goñi, "Comparative study of the pressure dependence of optical-phonon transverse-effective charges and linewidths in wurtzite InN", Phys. Rev. B, vol. 98, pp. 165204, Oct, 2018.
Alhassan, A. I., N. G. Young, R. M. Farrell, C. Pynn, F. Wu, A. Y. Alyamani, S. Nakamura, S. P. DenBaars, and J. S. Speck, "Development of high performance green c-plane III-nitride light-emitting diodes", Optics express, vol. 26, no. 5: Optical Society of America, pp. 5591–5601, 2018.
Saifaddin, B., C. J. Zollner, A. Almogbel, H. Foronda, F. Wu, A. Albadri, A. Al Yamani, M. Iza, S. Nakamura, S. P. DenBaars, et al., "Developments in AlGaN and UV-C LEDs grown on SiC", Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XXII, vol. 10554: International Society for Optics and Photonics, pp. 105541E, 2018.
Hahn, W., J.-M. Lentali, P. Polovodov, N. Young, S. Nakamura, J. S. Speck, C. Weisbuch, M. Filoche, Y.-R. Wu, M. Piccardo, et al., "Evidence of nanoscale Anderson localization induced by intrinsic compositional disorder in InGaN/GaN quantum wells by scanning tunneling luminescence spectroscopy", Phys. Rev. B, vol. 98, pp. 045305, Jul, 2018.
Hahn, W., J.-M. Lentali, P. Polovodov, N. Young, S. Nakamura, J. S. Speck, C. Weisbuch, M. Filoche, Y.-R. Wu, M. Piccardo, et al., "Evidence of nanoscale Anderson localization induced by intrinsic compositional disorder in InGaN/GaN quantum wells by scanning tunneling luminescence spectroscopy", Phys. Rev. B, vol. 98, pp. 045305, Jul, 2018.

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