Publications

Found 85 results
Author Title Type [ Year(Desc)]
Filters: Author is Nakamura, S  [Clear All Filters]
2011
Raring, JW., MC. Schmidt, C. Poblenz, Y. Lin, C. Bai, P. Rudy, JS. Speck, SP. DenBaars, and S. Nakamura, "Recent progress in InGaN-based laser diodes fabricated on nonpolar/semipolar substrates", Photonics Conference (PHO), 2011 IEEE: IEEE, pp. 503–504, 2011.
2012
DenBaars, SP., C-C. Pan, N. Pfaff, S. Tanaka, JS. Speck, and S. Nakamura, "Advances in GaN semiconductors for energy efficient solid state lighting", Photonics Conference (IPC), 2012 IEEE: IEEE, pp. 427–428, 2012.
2013
Shivaraman, R., Y. Kawaguchi, S. Tanaka, SP. DenBaars, S. Nakamura, and JS. Speck, "Comparative analysis of 20 2\= 1 and 20 2\= 1\= semipolar GaN light emitting diodes using atom probe tomography", Applied Physics Letters, vol. 102, no. 25: AIP, pp. 251104, 2013.
Farrell, RM., AA. Al-Heji, CJ. Neufeld, X. Chen, M. Iza, SC. Cruz, S. Keller, S. Nakamura, SP. DenBaars, UK. Mishra, et al., "Effect of intentional p-GaN surface roughening on the performance of InGaN/GaN solar cells", Applied Physics Letters, vol. 103, no. 24: AIP, pp. 241104, 2013.
DenBaars, SP., J. Speck, and S. Nakamura, "Energy savings potential of GaN LEDs for energy efficient lighting and future research directions", Asia Communications and Photonics Conference: Optical Society of America, pp. ATh2A–1, 2013.
Young, NG., RM. Farrell, YL. Hu, Y. Terao, M. Iza, S. Keller, SP. DenBaars, S. Nakamura, and JS. Speck, "High performance thin quantum barrier InGaN/GaN solar cells on sapphire and bulk (0001) GaN substrates", Applied Physics Letters, vol. 103, no. 17: AIP, pp. 173903, 2013.
Farrell, RM., DA. Haeger, K. Fujito, SP. DenBaars, S. Nakamura, and JS. Speck, "Morphological evolution of InGaN/GaN light-emitting diodes grown on free-standing m-plane GaN substrates", Journal of Applied Physics, vol. 113, no. 6: AIP, pp. 063504, 2013.
Marcinkevičius, S., Y. Zhao, KM. Kelchner, S. Nakamura, SP. DenBaars, and JS. Speck, "Near-field investigation of spatial variations of (20 2\= 1\=) InGaN quantum well emission spectra", Applied Physics Letters, vol. 103, no. 13: AIP, pp. 131116, 2013.
Marcinkevičius, S., KM. Kelchner, S. Nakamura, SP. DenBaars, and JS. Speck, "Optical properties of extended and localized states in m-plane InGaN quantum wells", Applied Physics Letters, vol. 102, no. 10: AIP, pp. 101102, 2013.
Marcinkevičius, S., KM. Kelchner, LY. Kuritzky, S. Nakamura, SP. DenBaars, and JS. Speck, "Photoexcited carrier recombination in wide m-plane InGaN/GaN quantum wells", Applied Physics Letters, vol. 103, no. 11: AIP, pp. 111107, 2013.
Pourhashemi, A., RM. Farrell, MT. Hardy, PS. Hsu, KM. Kelchner, JS. Speck, SP. DenBaars, and S. Nakamura, "Pulsed high-power AlGaN-cladding-free blue laser diodes on semipolar (20 2 1) GaN substrates", Applied Physics Letters, vol. 103, no. 15: AIP, pp. 151112, 2013.
Pimputkar, S., S. Kawabata, JS. Speck, and S. Nakamura, "Surface morphology study of basic ammonothermal GaN grown on non-polar GaN seed crystals of varying surface orientations from m-plane to a-plane", Journal of Crystal Growth, vol. 368: Elsevier, pp. 67–71, 2013.
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.
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.
Young, NG., EE. Perl, RM. Farrell, M. Iza, S. Keller, JE. Bowers, S. Nakamura, SP. DenBaars, and JS. Speck, "High-performance broadband optical coatings on InGaN/GaN solar cells for multijunction device integration", Applied Physics Letters, vol. 104, no. 16: AIP, pp. 163902, 2014.
Pimputkar, S., S. Kawabata, JS. Speck, and S. Nakamura, "Improved growth rates and purity of basic ammonothermal GaN", Journal of Crystal Growth, vol. 403: Elsevier, pp. 7–17, 2014.
Pimputkar, S., S. Kawabata, J. Speck, and S. Nakamura, "MS94. O06", Acta Cryst, vol. 70, pp. C1416, 2014.
Holder, CO., JT. Leonard, RM. Farrell, DA. Cohen, B. Yonkee, JS. Speck, SP. DenBaars, S. Nakamura, and DF. Feezell, "Nonpolar III-nitride vertical-cavity surface emitting lasers with a polarization ratio of 100% fabricated using photoelectrochemical etching", Applied Physics Letters, vol. 105, no. 3: AIP, pp. 031111, 2014.
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.
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.
Pimputkar, S., S. Suihkonen, M. Imade, Y. Mori, JS. Speck, and S. Nakamura, "Free electron concentration dependent sub-bandgap optical absorption characterization of bulk GaN crystals", Journal of Crystal Growth, vol. 432: Elsevier, pp. 49–53, 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.
Pourhashemi, A., RM. Farrell, DA. Cohen, JS. Speck, SP. DenBaars, and S. Nakamura, "High-power blue laser diodes with indium tin oxide cladding on semipolar (20 2 1) GaN substrates", Applied Physics Letters, vol. 106, no. 11: AIP Publishing, pp. 111105, 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.
Leonard, JT., DA. Cohen, BP. Yonkee, RM. Farrell, T. Margalith, S. Lee, SP. DenBaars, JS. Speck, and S. Nakamura, "Nonpolar III-nitride vertical-cavity surface-emitting lasers incorporating an ion implanted aperture", Applied Physics Letters, vol. 107, no. 1: AIP Publishing, pp. 011102, 2015.

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