Publications

Found 161 results
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2024
Islam, S., AS. Senarath, E. Farzana, DR. Ball, A. Sengupta, NS. Hendricks, A. Bhattacharyya, RA. Reed, EX. Zhang, JS. Speck, et al., "Single-Event Burnout in Vertical Beta-Ga2O3 Diodes with Pt/PtOx Schottky Contacts and High-k Field-Plate Dielectrics", IEEE Transactions on Nuclear Science, 2024.
2023
Li, P., H. Li, Y. Yao, N. Lim, M. Wong, M. Iza, M. J. Gordon, J. S. Speck, S. Nakamura, and S. P. DenBaars, "Significant Quantum Efficiency Enhancement of InGaN Red Micro-Light-Emitting Diodes with a Peak External Quantum Efficiency of up to 6%", ACS Photonics, pp. null, 2023.
Islam, S., A. S. Senarath, A. Sengupta, E. Xia Zhang, D. R. Ball, D. M. Fleetwood, R. D. Schrimpf, E. Farzana, A. Bhattacharyya, N. S. Hendricks, et al., "Single-Event Burnout by Cf-252 Irradiation in Vertical Beta-Ga2O3 Diodes with Pt and PtOx Schottky Contacts and High Permittivity Dielectric Field Plate", Device Research Conference (DRC), pp. 1-2, 2023.
Ho, W. Ying, C. W. Johnson, T. Tak, M. Sauty, Y. Chao Chow, S. Nakamura, A. Schmid, J. Peretti, C. Weisbuch, and J. S. Speck, "Steady-state junction current distribution in pn GaN diodes measured using low-energy electron microscopy (LEEM)", Applied Physics Letters, vol. 123, issue 3, 2023.
Wu, F., J. Ewing, C. Lynsky, M. Iza, S. Nakamura, S. P. DenBaars, and J. S. Speck, "Structure of V-defects in long wavelength GaN-based light emitting diodes", Journal of Applied Physics, vol. 133, 01, 2023.
Wu, F., J. Ewing, C. Lynsky, M. Iza, S. Nakamura, S. P. DenBaars, and J. S. Speck, "Structure of V-defects in long wavelength GaN-based light emitting diodes", Journal of Applied Physics, vol. 133, 01/2023.
2022
Yao, Y., H. Li, P. Li, C. J. Zollner, M. Wang, M. Iza, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Size dependent characteristics of AlGaN-based deep ultraviolet micro-light-emitting-diodes", Applied Physics Express, vol. 15, pp. 064003, may, 2022.
Korlacki, R\l., M. Hilfiker, J. Knudtson, M. Stokey, U. Kilic, A. Mauze, Y. Zhang, J. Speck, V. Darakchieva, and M. Schubert, "Strain and Composition Dependencies of the Near-Band-Gap Optical Transitions in Monoclinic (AlxGa1−x)2O3 Alloys with Coherent Biaxial In-Plane Strain on Ga2O3(010)", Phys. Rev. Appl., vol. 18, pp. 064019, Dec, 2022.
Huynh, K., M. E. Liao, A. Mauze, T. Itoh, X. Yan, J. S. Speck, X. Pan, and M. S. Goorsky, "Surface reaction dependence of molecular beam epitaxy grown aluminum on various orientations of β-Ga2O3", APL Materials, vol. 10, 01, 2022.
2021
Mauze, A., T. Itoh, Y. Zhang, and J. S. Speck, "Sn doping of [beta]-Ga2O3 grown by plasma-assisted molecular beam epitaxy", Oxide-based Materials and Devices XII: International Society for Optics and Photonics, 2021.
Gandrothula, S., T. Kamikawa, J. S. Speck, S. Nakamura, and S. P. DenBaars, "Study of surface roughness of lifted-off epitaxial lateral overgrown GaN layers for the n-DBR mirror of a III-nitride vertical-cavity surface emitting laser", Applied Physics Express, vol. 14, pp. 031002, feb, 2021.
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.
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.
Alema, F., B. Hertog, P. Mukhopadhyay, Y. Zhang, A. Mauze, A. Osinsky, W. V. Schoenfeld, J. S. Speck, and T. Vogt, "Solar blind Schottky photodiode based on an MOCVD-grown homoepitaxial β-Ga2O3 thin film", APL Materials, vol. 7, pp. 022527, 2019.
Smirnov, A. M., E. C. Young, V. E. Bougrov, J. S. Speck, and A. E. Romanov, "Stress relaxation in semipolar and nonpolar III-nitride heterostructures by formation of misfit dislocations of various origin", Journal of Applied Physics, vol. 126, pp. 245104, 2019.
2018
Khoury, M., H. Li, B. Bonef, L. Y. Kuritzky, A. J. Mughal, S. Nakamura, J. S. Speck, and S. P. DenBaars, "Semipolar GaN templates on sapphire: 432 nm InGaN light-emitting diodes and light extraction simulations", Applied Physics Express, vol. 11, no. 3: IOP Publishing, pp. 036501, 2018.
Lee, C., C. Shen, C. Cozzan, R. M. Farrell, S. Nakamura, A. Y. Alyamani, B. S. Ooi, J. E. Bowers, S. P. DenBaars, and J. S. Speck, "Semipolar GaN-based laser diodes for Gbit/s white lighting communication: devices to systems", Gallium Nitride Materials and Devices XIII, vol. 10532: International Society for Optics and Photonics, pp. 105321N, 2018.
Shen, C., T. Khee Ng, C. Lee, S. Nakamura, J. S. Speck, S. P. DenBaars, A. Y. Alyamani, M. M. El-Desouki, and B. S. Ooi, "Semipolar InGaN quantum-well laser diode with integrated amplifier for visible light communications", Optics express, vol. 26, no. 6: Optical Society of America, pp. A219–A226, 2018.
Peelaers, H., J. B. Varley, J. S. Speck, and C. G. Van de Walle, "Structural and electronic properties of Ga2O3-Al2O3 alloys", Applied Physics Letters, vol. 112, pp. 242101, 2018.
2017
Ivanov, R., S. Marcinkevičius, T. K. Uždavinys, L. Y. Kuritzky, S. Nakamura, and J. S. Speck, "Scanning near-field microscopy of carrier lifetimes in m-plane InGaN quantum wells", Applied Physics Letters, vol. 110, no. 3: AIP Publishing, pp. 031109, 2017.

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