Publications

Found 632 results
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2020
Farzana, E., J. Wang, M. Monavarian, T. Itoh, K. S. Qwah, Z. J. Biegler, K. F. Jorgensen, and J. S. Speck, "Over 1 kV Vertical GaN-on-GaN p-n Diodes With Low On-Resistance Using Ammonia Molecular Beam Epitaxy", IEEE Electron Device Letters, vol. 41, pp. 1806-1809, 2020.
Khoury, M., H. Li, P. Li, Y. Chao Chow, B. Bonef, H. Zhang, M. S. Wong, S. Pinna, J. Song, J. Choi, et al., "Polarized monolithic white semipolar (202̅1) InGaN light-emitting diodes grown on high quality (202̅1) GaN/sapphire templates and its application to visible light communication", Nano Energy, vol. 67, pp. 104236, 2020.
Bonef, B., C. E. Reilly, F. Wu, S. Nakamura, S. P. DenBaars, S. Keller, and J. S. Speck, "Quantitative investigation of indium distribution in InN wetting layers and dots grown by metalorganic chemical vapor deposition", Applied Physics Express, vol. 13, pp. 065005, may, 2020.
Li, P., H. Zhang, H. Li, M. Iza, Y. Yao, M. S. Wong, N. Palmquist, J. S. Speck, S. Nakamura, and S. P. DenBaars, "Size-independent low voltage of InGaN micro-light-emitting diodes with epitaxial tunnel junctions using selective area growth by metalorganic chemical vapor deposition", Opt. Express, vol. 28, pp. 18707–18712, Jun, 2020.
Poliani, E., D. Seidlitz, M. Ries, S. J. Choi, J. S. Speck, A. Hoffmann, and M. R. Wagner, "Strong Near-Field Light–Matter Interaction in Plasmon-Resonant Tip-Enhanced Raman Scattering in Indium Nitride", The Journal of Physical Chemistry C, vol. 124, pp. 28178-28185, 2020.
Monavarian, M., J. Xu, M. N. Fireman, N. Nookala, F. Wu, B. Bonef, K. S. Qwah, E. C. Young, M. A. Belkin, and J. S. Speck, "Structural and optical properties of nonpolar m- and a-plane GaN/AlGaN heterostructures for narrow-linewidth mid-infrared intersubband transitions", Applied Physics Letters, vol. 116, pp. 201103, 2020.
Zollner, C. J., A. S. Almogbel, Y. Yao, M. Wang, M. Iza, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Superlattice hole injection layers for UV LEDs grown on SiC", Opt. Mater. Express, vol. 10, pp. 2171–2180, Sep, 2020.
Qwah, K. S., M. Monavarian, G. Lheureux, J. Wang, Y.-R. Wu, and J. S. Speck, "Theoretical and experimental investigations of vertical hole transport through unipolar AlGaN structures: Impacts of random alloy disorder", Applied Physics Letters, vol. 117, pp. 022107, 2020.
Qwah, K. S., M. Monavarian, G. Lheureux, J. Wang, Y.-R. Wu, and J. S. Speck, "Theoretical and experimental investigations of vertical hole transport through unipolar AlGaN structures: Impacts of random alloy disorder", Applied Physics Letters, vol. 117, pp. 022107, 2020.
Yapparov, R., Y. Chao Chow, C. Lynsky, F. Wu, S. Nakamura, J. S. Speck, and S. Marcinkevičius, "Variations of light emission and carrier dynamics around V-defects in InGaN quantum wells", Journal of Applied Physics, vol. 128, pp. 225703, 2020.
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.

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