Publications

Found 215 results
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2013
Chen, J., Y. S. Puzyrev, C. Xuan Zhang, E. Xia Zhang, M. W. McCurdy, D. M. Fleetwood, R. D. Schrimpf, S. T. Pantelides, S. W. Kaun, E. C. H. Kyle, et al., "Proton-induced dehydrogenation of defects in AlGaN/GaN HEMTs", IEEE Transactions on Nuclear Science, vol. 60, no. 6: IEEE, pp. 4080–4086, 2013.
Zhao, Y., F. Wu, C-Y. Huang, Y. Kawaguchi, S. Tanaka, K. Fujito, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Suppressing void defects in long wavelength semipolar (20 2 1) InGaN quantum wells by growth rate optimization", Applied Physics Letters, vol. 102, no. 9: AIP, pp. 091905, 2013.
2014
Zhao, Y., F. Wu, T. Jui Yang, Y. Renn Wu, S. Nakamura, and J. S. Speck, "Atomic-scale nanofacet structure in semipolar (202̄1̄) and (202̄1) InGaN single quantum wells", Applied Physics Express, vol. 7, 2, 2014.
Zhao, Y., F. Wu, T-J. Yang, Y-R. Wu, S. Nakamura, and J. S. Speck, "Atomic-scale nanofacet structure in semipolar and InGaN single quantum wells", Applied Physics Express, vol. 7, no. 2: IOP Publishing, pp. 025503, 2014.
Marcinkevičius, S., K. Gelžinyt\.e, Y. Zhao, S. Nakamura, SP. DenBaars, and JS. Speck, "Carrier redistribution between different potential sites in semipolar (20 2\= 1) InGaN quantum wells studied by near-field photoluminescence", Applied Physics Letters, vol. 105, no. 11: AIP Publishing, pp. 111108, 2014.
Sasikumar, A., AR. Arehart, SW. Kaun, J. Chen, EX. Zhang, DM. Fleetwood, RD. Schrimpf, JS. Speck, and SA. Ringel, "Defects in GaN based transistors", Gallium Nitride Materials and Devices IX, vol. 8986: International Society for Optics and Photonics, pp. 89861C, 2014.
Zhang, Z., C. M. Jackson, A. R. Arehart, B. McSkimming, J. S. Speck, and S. A. Ringel, "Direct Determination of Energy Band Alignments of Ni/Al 2 O 3/GaN MOS Structures Using Internal Photoemission Spectroscopy", Journal of electronic materials, vol. 43, no. 4: Springer US, pp. 828–832, 2014.
Marcinkevičius, S., R. Ivanov, Y. Zhao, S. Nakamura, SP. DenBaars, and JS. Speck, "Highly polarized photoluminescence and its dynamics in semipolar (20 2\= 1\=) InGaN/GaN quantum well", Applied Physics Letters, vol. 104, no. 11: AIP, pp. 111113, 2014.
Hardy, M. T., F. Wu, C-Y. Huang, Y. Zhao, D. F. Feezell, S. Nakamura, J. S. Speck, and S. P. DenBaars, "Impact of p-GaN thermal damage and barrier composition on semipolar green laser diodes", IEEE Photonics Technology Letters, vol. 26, no. 1: IEEE, pp. 43–46, 2014.
Hardy, M. T., F. Wu, C. Y. Huang, Y. Zhao, D. F. Feezell, S. Nakamura, J. S. Speck, and S. P. DenBaars, "Impact of p-GaN Thermal Damage and Barrier Composition on Semipolar Green Laser Diodes", IEEE Photonics Technology Letters, vol. 26, pp. 43-46, Jan, 2014.
Wu, Y-R., C-Y. Huang, Y. Zhao, and JS. Speck, "Nonpolar and semipolar LEDs", Nitride Semiconductor Light-Emitting Diodes (LEDs), pp. 250–275, 2014.
Chung-Ta, HSU., C-Y. Huang, Y. Zhao, S-C. Haung, D. F. Feezell, S. P. DenBaars, S. Nakamura, and J. S. Speck, Pec etching of (20-2-1) semipolar gallium nitride for external efficiency enhancement in light emitting diode applications, 2014.
Chen, J., E. Xia Zhang, C. Xuan Zhang, M. W. McCurdy, D. M. Fleetwood, R. D. Schrimpf, S. W. Kaun, E. C. H. Kyle, and J. S. Speck, "RF performance of proton-irradiated AlGaN/GaN HEMTs", IEEE Transactions on Nuclear Science, vol. 61, no. 6: IEEE, pp. 2959–2964, 2014.
Chen, J., E. Xia Zhang, C. Xuan Zhang, M. W. McCurdy, D. M. Fleetwood, R. D. Schrimpf, S. W. Kaun, E. C. H. Kyle, and J. S. Speck, "RF performance of proton-irradiated AlGaN/GaN HEMTs", IEEE Transactions on Nuclear Science, vol. 61, no. 6: IEEE, pp. 2959–2964, 2014.
Wu, F., Y. Zhao, A. Romanov, S. P. DenBaars, S. Nakamura, and J. S. Speck, "Stacking faults and interface roughening in semipolar (20 2\= 1\=) single InGaN quantum wells for long wavelength emission", Applied Physics Letters, vol. 104, no. 15: AIP, pp. 151901, 2014.
Zhao, Y., R. M. Farrell, Y-R. Wu, and J. S. Speck, "Valence band states and polarized optical emission from nonpolar and semipolar III–nitride quantum well optoelectronic devices", Japanese Journal of Applied Physics, vol. 53, no. 10: IOP Publishing, pp. 100206, 2014.
2015
Lee, C., C. Zhang, M. Cantore, R. Farrell, S. Ho Oh, T. Margalith, J. S. Speck, S. Nakamura, J. E. Bowers, and S. P. DenBaars, "2.6 GHz high-speed visible light communication of 450 nm GaN laser diode by direct modulation", Summer Topicals Meeting Series (SUM), 2015: IEEE, pp. 228–229, 2015.
Lee, C., C. Zhang, M. Cantore, R. M. Farrell, S. Ho Oh, T. Margalith, J. S. Speck, S. Nakamura, J. E. Bowers, and S. P. DenBaars, "4 Gbps direct modulation of 450 nm GaN laser for high-speed visible light communication", Optics express, vol. 23, no. 12: Optical Society of America, pp. 16232–16237, 2015.
Nguyen, X. Sang, K. Lin, Z. Zhang, B. McSkimming, AR. Arehart, JS. Speck, SA. Ringel, E. A. Fitzgerald, and SJ. Chua, "Correlation of a generation-recombination center with a deep level trap in GaN", Applied Physics Letters, vol. 106, no. 10: AIP Publishing, pp. 102101, 2015.
Zhong, H., A. Tyagi, K. J. Vampola, J. S. Speck, S. P. DenBaars, and S. Nakamura, High light extraction efficiency nitride based light emitting diode by surface roughening, 2015.
Gelžinyt\.e, K., R. Ivanov, S. Marcinkevičius, Y. Zhao, DL. Becerra, S. Nakamura, SP. DenBaars, and JS. Speck, "High spatial uniformity of photoluminescence spectra in semipolar (20 2 1) plane InGaN/GaN quantum wells", Journal of Applied Physics, vol. 117, no. 2: AIP Publishing, pp. 023111, 2015.
Ivanov, R., S. Marcinkevičius, Y. Zhao, DL. Becerra, S. Nakamura, SP. DenBaars, and JS. Speck, "Impact of carrier localization on radiative recombination times in semipolar (20 2\= 1) plane InGaN/GaN quantum wells", Applied Physics Letters, vol. 107, no. 21: AIP Publishing, pp. 211109, 2015.
Zhang, Z., AR. Arehart, ECH. Kyle, J. Chen, EX. Zhang, DM. Fleetwood, RD. Schrimpf, JS. Speck, and SA. Ringel, "Proton irradiation effects on deep level states in Mg-doped p-type GaN grown by ammonia-based molecular beam epitaxy", Applied Physics Letters, vol. 106, no. 2: AIP Publishing, pp. 022104, 2015.
Zhang, Z., AR. Arehart, ECH. Kyle, J. Chen, EX. Zhang, DM. Fleetwood, RD. Schrimpf, JS. Speck, and SA. Ringel, "Proton irradiation effects on deep level states in Mg-doped p-type GaN grown by ammonia-based molecular beam epitaxy", Applied Physics Letters, vol. 106, no. 2: AIP Publishing, pp. 022104, 2015.
Galiano, K., D. Gleason, P. Krishna Paul, Z. Zhang, D. Cardwell, B. McSkimming, J. Speck, A. Arehart, S. Ringel, and J. Pelz, "Spatial Localization and Variation in Defect-Related Electron Traps in GaN Materials", Bulletin of the American Physical Society: APS, 2015.

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