Publications

Found 112 results
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2016
Lee, C., C. Zhang, D. L. Becerra, S. Lee, C. A. Forman, S. Ho Oh, R. M. Farrell, J. S. Speck, S. Nakamura, J. E. Bowers, et al., "Dynamic characteristics of 410 nm semipolar (20 2 1) iii-nitride laser diodes with a modulation bandwidth of over 5 ghz", Applied Physics Letters, vol. 109, no. 10: AIP Publishing, pp. 101104, 2016.
2015
Leonard, JT., EC. Young, BP. Yonkee, DA. Cohen, T. Margalith, SP. DenBaars, JS. Speck, and S. Nakamura, "Demonstration of a III-nitride vertical-cavity surface-emitting laser with a III-nitride tunnel junction intracavity contact", Applied Physics Letters, vol. 107, no. 9: AIP Publishing, pp. 091105, 2015.
Fireman, M. N., D. A. Browne, B. Mazumder, J. S. Speck, and U. K. Mishra, "Demonstration of isotype GaN/AlN/GaN heterobarrier diodes by NH3-molecular beam epitaxy", Applied Physics Letters, vol. 106, no. 20: AIP Publishing, pp. 202106, 2015.
Yonkee, B. P., R. M. Farrell, J. T. Leonard, S. P. DenBaars, J. S. Speck, and S. Nakamura, "Demonstration of low resistance ohmic contacts to p-type (202Ø1Ø) GaN", Semiconductor Science and Technology, vol. 30, no. 7: IOP Publishing, pp. 075007, 2015.
Kowsz, SJ., CD. Pynn, SH. Oh, RM. Farrell, JS. Speck, SP. DenBaars, and S. Nakamura, "Demonstration of phosphor-free polarized white light emission from monolithically integrated semipolar InGaN quantum wells", Applied Physics Letters, vol. 107, no. 10: AIP Publishing, pp. 101104, 2015.
Yeluri, R., J. Lu, C. A. Hurni, D. A. Browne, S. Chowdhury, S. Keller, J. S. Speck, and U. K. Mishra, "Design, fabrication, and performance analysis of GaN vertical electron transistors with a buried p/n junction", Applied Physics Letters, vol. 106, no. 18: AIP Publishing, pp. 183502, 2015.
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.
Piccardo, M., L. Martinelli, J. Iveland, N. Young, S. P. DenBaars, S. Nakamura, J. S. Speck, C. Weisbuch, and J. Peretti, "Determination of the first satellite valley energy in the conduction band of wurtzite GaN by near-band-gap photoemission spectroscopy", Physical Review B, vol. 89, no. 23: APS, pp. 235124, 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.
Craven, M. D., S. P. DenBaars, J. S. Speck, and S. Nakamura, Dislocation reduction in non-polar III-nitride thin films, 2014.
2013
Holder, C., D. Feezell, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Demonstration of nonpolar GaN-based vertical-cavity surface-emitting lasers", Vertical-Cavity Surface-Emitting Lasers XVII, vol. 8639: International Society for Optics and Photonics, pp. 863906, 2013.
Hardy, M., C. O. Holder, S. Nakamura, J. S. Speck, D. A. Cohen, and S. P. DenBaars, "Demonstration of True Green ITO Clad Semipolar (202Ø1) InGaN/GaN Laser Diodes", CLEO: Science and Innovations: Optical Society of America, pp. CF1F–1, 2013.
Hardy, M. T., C. O. Holder, S. Nakamura, J. S. Speck, D. A. Cohen, and S. P. DenBaars, "Demonstration of true green ITO clad semipolar InGaN/GaN laser diodes", Lasers and Electro-Optics (CLEO), 2013 Conference on: IEEE, pp. 1–2, 2013.
Kawaguchi, Y., S-C. Huang, R. M. Farrell, Y. Zhao, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Dependence of electron overflow on emission wavelength and crystallographic orientation in single-quantum-well III–nitride light-emitting diodes", Applied Physics Express, vol. 6, no. 5: IOP Publishing, pp. 052103, 2013.
DenBaars, S. P., D. Feezell, K. Kelchner, S. Pimputkar, C-C. Pan, C-C. Yen, S. Tanaka, Y. Zhao, N. Pfaff, R. Farrell, et al., "Development of gallium-nitride-based light-emitting diodes (LEDs) and laser diodes for energy-efficient lighting and displays", Acta Materialia, vol. 61, no. 3: Pergamon, pp. 945–951, 2013.
Farell, R. M., E. C. Young, F. Wu, S. Nakamura, S. P. DenBaars, and J. S. Speck, "Development of high-performance nonpolar III-nitride light-emitting devices", Electronics, Communications and Photonics Conference (SIECPC), 2013 Saudi International: IEEE, pp. 1–8, 2013.
Iveland, J., L. Martinelli, J. Peretti, J. S. Speck, and C. Weisbuch, "Direct measurement of Auger electrons emitted from a semiconductor light-emitting diode under electrical injection: identification of the dominant mechanism for efficiency droop", Physical review letters, vol. 110, no. 17: American Physical Society, pp. 177406, 2013.
Schaake, C. A., D. F. Brown, B. L. Swenson, S. Keller, J. S. Speck, and U. K. Mishra, "A donor-like trap at the InGaN/GaN interface with net negative polarization and its possible consequence on internal quantum efficiency", Semiconductor Science and Technology, vol. 28, no. 10: IOP Publishing, pp. 105021, 2013.
2012
Zhang, Z., CA. Hurni, AR. Arehart, J. Yang, RC. Myers, JS. Speck, and SA. Ringel, "Deep traps in nonpolar m-plane GaN grown by ammonia-based molecular beam epitaxy", Applied Physics Letters, vol. 100, no. 5: AIP, pp. 052114, 2012.
Hardy, M. T., P. Shan Hsu, I. L. Koslow, D. Feezell, S. Nakamura, J. S. Speck, and S. DenBaars, "Demonstration of a Relaxed Waveguide Semipolar (202Ø1) InGaN/GaN Laser Diode", CLEO: Science and Innovations: Optical Society of America, pp. CTu2N–2, 2012.
Hardy, M. T., P. S. Hsu, I. Koslow, D. F. Feezell, S. Nakamura, J. S. Speck, and S. P. DenBaars, "Demonstration of a relaxed waveguide semipolar InGaN/GaN laser diode", Lasers and Electro-Optics (CLEO), 2012 Conference on: IEEE, pp. 1–2, 2012.
Yeluri, R., C. A. Hurni, S. Chowdhury, J. S. Speck, and U. K. Mishra, "Demonstration of Low ON-Resistance CAVETS with Ammonia MBE Grown Active p-GaN Layer as the Current Blocking Layer for High Power Applications", Meeting Abstracts, no. 30: The Electrochemical Society, pp. 2531–2531, 2012.
Holder, C., J. S. Speck, S. P. DenBaars, S. Nakamura, and D. Feezell, "Demonstration of nonpolar GaN-based vertical-cavity surface-emitting lasers", Applied Physics Express, vol. 5, no. 9: IOP Publishing, pp. 092104, 2012.
Toledo, N. G., D. J. Friedman, R. M. Farrell, E. E. Perl, C-T. Lin, J. E. Bowers, J. S. Speck, and U. K. Mishra, "Design of integrated III-nitride/non-III-nitride tandem photovoltaic devices", Journal of Applied Physics, vol. 111, no. 5: AIP, pp. 054503, 2012.
Sasikumar, A., A. Arehart, SA. Ringel, S. Kaun, MH. Wong, UK. Mishra, and JS. Speck, "Direct correlation between specific trap formation and electric stress-induced degradation in MBE-grown AlGaN/GaN HEMTs", Reliability Physics Symposium (IRPS), 2012 IEEE International: IEEE, pp. 2C–3, 2012.

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