Publications

Found 301 results
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2020
Gandrothula, S., T. Kamikawa, M. Araki, D. Cohen, J. S. Speck, S. Nakamura, and S. P. DenBaars, "An approach to remove homoepitaxially grown GaN layers by cleavage from the substrate surface", Applied Physics Express, vol. 13, pp. 041003, mar, 2020.
Lynsky, C., A. I. Alhassan, G. Lheureux, B. Bonef, S. P. DenBaars, S. Nakamura, Y-R. Wu, C. Weisbuch, and J. S. Speck, "Barriers to carrier transport in multiple quantum well nitride-based $c$-plane green light emitting diodes", Phys. Rev. Materials, vol. 4, pp. 054604, May, 2020.
Wurm, C., E. Ahmadi, F. Wu, N. Hatui, S. Keller, J. Speck, and U. Mishra, "Growth of high-quality N-polar GaN on bulk GaN by plasma-assisted molecular beam epitaxy", Solid State Communications, vol. 305, pp. 113763, 2020.
Alema, F., Y. Zhang, A. Mauze, T. Itoh, J. S. Speck, B. Hertog, and A. Osinsky, "H2O vapor assisted growth of β-Ga2O3 by MOCVD", AIP Advances, vol. 10, pp. 085002, 2020.
Alias, E. A., M. E. A. Samsudin, N. Ibrahim, A. J. Mughal, S. P. DenBaars, J. S. Speck, S. Nakamura, and N. Zainal, "Highly efficient InGaN-based LED with pre-roughening backside of GaN substrate", J. Opt. Soc. Am. B, vol. 37, pp. 1614–1619, Jun, 2020.
Aleksiejūnas, R., K. Nomeika, O. Kravcov, S. Nargelas, L. Kuritzky, C. Lynsky, S. Nakamura, C. Weisbuch, and J. S. Speck, "Impact of Alloy-Disorder-Induced Localization on Hole Diffusion in Highly Excited c-Plane and m-Plane InGaN Quantum Wells", Phys. Rev. Applied, vol. 14, pp. 054043, Nov, 2020.
Alema, F., Y. Zhang, A. Osinsky, N. Orishchin, N. Valente, A. Mauze, and J. S. Speck, "Low 10^14  cm−3 free carrier concentration in epitaxial β-Ga2O3 grown by MOCVD", APL Materials, vol. 8, pp. 021110, 2020.
A., M., and S. J., "Plasma-Assisted Molecular Beam Epitaxy 1", Gallium Oxide, vol. 293: Springer, Cham, 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.
Lheureux, G., M. Monavarian, R. Anderson, R. A. Decrescent, J. Bellessa, C. Symonds, J. A. Schuller, J. S. Speck, S. Nakamura, and S. P. DenBaars, "Tamm plasmons in metal/nanoporous GaN distributed Bragg reflector cavities for active and passive optoelectronics", Opt. Express, vol. 28, pp. 17934–17943, Jun, 2020.
Zhang, Y., A. Mauze, F. Alema, A. Osinsky, T. Itoh, and J. S. Speck, "β-Ga2O3 lateral transistors with high aspect ratio fin-shape channels", Japanese Journal of Applied Physics, vol. 60, pp. 014001, dec, 2020.
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.
Hamdy, K. W., E. C. Young, A. I. Alhassan, D. L. Becerra, S. P. DenBaars, J. S. Speck, and S. Nakamura, "Efficient tunnel junction contacts for high-power semipolar III-nitride edge-emitting laser diodes", Opt. Express, vol. 27, pp. 8327–8334, Mar, 2019.
SaifAddin, B. K., A. Almogbel, C. J. Zollner, H. Foronda, A. Alyamani, A. Albadri, M. Iza, S. Nakamura, S. P. DenBaars, and J. S. Speck, "Fabrication technology for high light-extraction ultraviolet thin-film flip-chip (UV TFFC) LEDs grown on SiC", Semiconductor Science and Technology, vol. 34, pp. 035007, 01/2019.
SaifAddin, B. K., A. Almogbel, C. J. Zollner, H. Foronda, A. Alyamani, A. Albadri, M. Iza, S. Nakamura, S. P. DenBaars, and J. S. Speck, "Fabrication technology for high light-extraction ultraviolet thin-film flip-chip (UV TFFC) LEDs grown on SiC", Semiconductor Science and Technology, vol. 34, pp. 035007, 01/2019.
SaifAddin, B. K., A. Almogbel, C. J. Zollner, H. Foronda, A. Alyamani, A. Albadri, M. Iza, S. Nakamura, S. P. DenBaars, and J. S. Speck, "Fabrication technology for high light-extraction ultraviolet thin-film flip-chip (UV TFFC) LEDs grown on SiC", Semiconductor Science and Technology, vol. 34, pp. 035007, 01/2019.
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.
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.
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.
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.
Farzana, E., A. Mauze, J. B. Varley, T. E. Blue, J. S. Speck, A. R. Arehart, and S. A. Ringel, "Influence of neutron irradiation on deep levels in Ge-doped (010) β-Ga2O3 layers grown by plasma-assisted molecular beam epitaxy", APL Materials, vol. 7, pp. 121102, 2019.
Alreesh, M. Abo, P. Von Dollen, T. F. Malkowski, T. Mates, H. Albrithen, S. DenBaars, S. Nakamura, and J. S. Speck, "Investigation of oxygen and other impurities and their effect on the transparency of a Na flux grown GaN crystal", Journal of Crystal Growth, vol. 508, pp. 50 - 57, 2019.
Alreesh, M. Abo, P. Von Dollen, T. F. Malkowski, T. Mates, H. Albrithen, S. DenBaars, S. Nakamura, and J. S. Speck, "Investigation of oxygen and other impurities and their effect on the transparency of a Na flux grown GaN crystal", Journal of Crystal Growth, vol. 508, pp. 50 - 57, 2019.
Chmielewski, A., P. Moradifar, L. Miao, K. A. Lopez, Y. Zhang, A. Mauze, J. S. Speck, and N. Alem, "Investigation of the Atomic and Electronic Structure of β-(Al0.2Ga0.8)2O3 Alloys by STEM-EELS", Microscopy and Microanalysis, vol. 25, pp. 2186–2187, 2019.

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