Publications

Found 261 results
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2012
Haeger, D., E. Young, R. Chung, F. Wu, S. Nakamura, S. DenBaars, J. S. Speck, A. Romanov, and D. A. Cohen, "384nm AlGaN Diode Lasers on Relaxed Semipolar Buffers", CLEO: Science and Innovations: Optical Society of America, pp. CTu2N–4, 2012.
Hsu, P. Shan, M. T. Hardy, F. Wu, I. Koslow, E. C. Young, A. E. Romanov, K. Fujito, D. F. Feezell, S. P. DenBaars, J. S. Speck, et al., "444.9 nm semipolar (11 2\= 2) laser diode grown on an intentionally stress relaxed InGaN waveguiding layer", Applied Physics Letters, vol. 100, no. 2: AIP, pp. 021104, 2012.
Das, NC., ML. Reed, AV. Sampath, H. Shen, M. Wraback, RM. Farrell, M. Iza, SC. Cruz, , NG. Young, et al., "Anti Reflection (AR) Coating for Indium Gallium Nitride (InGaN) Solar Cells", Army Research Laboratory Report, 08/2012.
Garrett, G. A., P. Rotella, H. Shen, M. Wraback, D. A. Haeger, R. B. Chung, N. Pfaff, E. C. Young, S. P. DenBaars, J. S. Speck, et al., "Carrier dynamics in active regions for ultraviolet optoelectronics grown on thick, relaxed AlGaN on semipolar bulk GaN", physica status solidi (b), vol. 249, no. 3: Wiley Online Library, pp. 507–510, 2012.
Lang, J. R., NG. Young, R. M. Farrell, Y-R. Wu, and JS. Speck, "Carrier escape mechanism dependence on barrier thickness and temperature in InGaN quantum well solar cells", Applied Physics Letters, vol. 101, no. 18: AIP, pp. 181105, 2012.
Young, E. C., F. Wu, A. E. Romanov, D. A. Haeger, S. Nakamura, S. P. DenBaars, D. A. Cohen, and J. S. Speck, "Compositionally graded relaxed AlGaN buffers on semipolar GaN for mid-ultraviolet emission", Applied Physics Letters, vol. 101, no. 14: AIP, pp. 142109, 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.
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.
Metcalfe, G. D., C. S. Gallinat, H. Shen, M. Wraback, S. Wienecke, E. C. Young, and J. S. Speck, "Effects of strain relaxation on the photoluminescence of semipolar InGaN", Lasers and Electro-Optics (CLEO), 2012 Conference on: IEEE, pp. 1–2, 2012.
Masui, H., H. Yamada, K. Iso, A. Hirai, M. Saito, J. S. Speck, S. Nakamura, and S. P. DenBaars, Enhancement of optical polarization of nitride light-emitting diodes by wafer off-axis cut, 2012.
Masui, H., H. Yamada, K. Iso, J. S. Speck, S. Nakamura, and S. P. DenBaars, Enhancement of optical polarization of nitride light-emitting diodes by increased indium incorporation, 2012.
Das, NC., ML. Reed, AV. Sampath, H. Shen, M. Wraback, RM. Farrell, M. Iza, SC. Cruz, , NG. Young, et al., "Heterogeneous integration of InGaN and Silicon solar cells for enhanced energy harvesting", Photovoltaic Specialists Conference (PVSC), 2012 38th IEEE: IEEE, pp. 003076–003079, 2012.
Browne, D. A., E. C. Young, J. R. Lang, C. A. Hurni, and J. S. Speck, "Indium and impurity incorporation in InGaN films on polar, nonpolar, and semipolar GaN orientations grown by ammonia molecular beam epitaxy", Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, vol. 30, no. 4: AVS, pp. 041513, 2012.
Zhao, Y., Q. Yan, C-Y. Huang, S-C. Huang, P. Shan Hsu, S. Tanaka, C-C. Pan, Y. Kawaguchi, K. Fujito, C. G. Van de Walle, et al., "Indium incorporation and emission properties of nonpolar and semipolar InGaN quantum wells", Applied Physics Letters, vol. 100, no. 20: AIP, pp. 201108, 2012.
Farrell, RM., EC. Young, F. Wu, SP. DenBaars, and JS. Speck, "Materials and growth issues for high-performance nonpolar and semipolar light-emitting devices", Semiconductor Science and Technology, vol. 27, no. 2: IOP Publishing, pp. 024001, 2012.
Choi, S., F. Wu, R. Shivaraman, E. C. Young, and J. S. Speck, "Observation of columnar microstructure in lattice-matched InAlN/GaN grown by plasma assisted molecular beam epitaxy", Applied Physics Letters, vol. 100, no. 23: AIP, pp. 232102, 2012.
Koslow, I. L., M. T. Hardy, P. Shan Hsu, P-Y. Dang, F. Wu, A. Romanov, Y-R. Wu, E. C. Young, S. Nakamura, J. S. Speck, et al., "Performance and polarization effects in (11 2\= 2) long wavelength light emitting diodes grown on stress relaxed InGaN buffer layers", Applied Physics Letters, vol. 101, no. 12: AIP, pp. 121106, 2012.
Hirai, A., Z. Jia, M. Saito, H. Yamada, K. Iso, S. P. DenBaars, S. Nakamura, and J. S. Speck, Planar nonpolar m-plane group III nitride films grown on miscut substrates, 2012.
Hsu, P. Shan, M. T. Hardy, E. C. Young, A. E. Romanov, S. P. DenBaars, S. Nakamura, and J. S. Speck, "Stress relaxation and critical thickness for misfit dislocation formation in (10 1\= 0) and (30 31\=) InGaN/GaN heteroepitaxy", Applied Physics Letters, vol. 100, no. 17: AIP, pp. 171917, 2012.
Hardy, M. T., E. C. Young, P. Shan Hsu, D. A. Haeger, I. L. Koslow, S. Nakamura, S. P. DenBaars, and J. S. Speck, "Suppression of m-plane and c-plane slip through Si and Mg doping in partially relaxed (20 2\= 1) InGaN/GaN heterostructures", Applied Physics Letters, vol. 101, no. 13: AIP, pp. 132102, 2012.
Hardy, M. T., P. Shan Hsu, F. Wu, I. L. Koslow, E. C. Young, S. Nakamura, A. E. Romanov, S. P. DenBaars, and J. S. Speck, "Trace analysis of non-basal plane misfit stress relaxation in (20 2\= 1) and (30 3\= 1\=) semipolar InGaN/GaN heterostructures", Applied Physics Letters, vol. 100, no. 20: AIP, pp. 202103, 2012.
2011
Romanov, A. E., E. C. Young, F. Wu, A. Tyagi, C. S. Gallinat, S. Nakamura, S. P. DenBaars, and J. S. Speck, "Basal plane misfit dislocations and stress relaxation in III-nitride semipolar heteroepitaxy", Journal of Applied Physics, vol. 109, no. 10: AIP, pp. 103522, 2011.
Hsu, P. Shan, J. Sonoda, K. M. Kelchner, A. Tyagi, R. M. Farrell, D. A. Haeger, E. C. Young, A. E. Romanov, K. Fujito, H. Ohta, et al., "Blue InGaN/GaN laser diodes grown on (33$$\backslash$bar 3$\backslash$bar 1$) free-standing GaN substrates", physica status solidi (c), vol. 8, no. 7-8: WILEY-VCH Verlag, pp. 2390–2392, 2011.
Bierwagen, O., J. S. Speck, T. Nagata, T. Chikyow, Y. Yamashita, H. Yoshikawa, and K. Kobayashi, "Depletion of the In 2 O 3 (001) and (111) surface electron accumulation by an oxygen plasma surface treatment", Applied Physics Letters, vol. 98, no. 17: AIP, pp. 172101, 2011.
Bierwagen, O., J. S. Speck, T. Nagata, T. Chikyow, Y. Yamashita, H. Yoshikawa, and K. Kobayashi, "Depletion of the In 2 O 3 (001) and (111) surface electron accumulation by an oxygen plasma surface treatment", Applied Physics Letters, vol. 98, no. 17: AIP, pp. 172101, 2011.

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