Publications

Found 110 results
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2011
Zhao, Y., S. Tanaka, Q. Yan, C-Y. Huang, R. B. Chung, C-C. Pan, K. Fujito, D. Feezell, C. G. Van de Walle, J. S. Speck, et al., "High optical polarization ratio from semipolar (20 2\= 1\=) blue-green InGaN/GaN light-emitting diodes", Applied physics letters, vol. 99, no. 5: AIP, pp. 051109, 2011.
Farrell, R. M., C. J. Neufeld, S. C. Cruz, J. R. Lang, M. Iza, S. Keller, S. Nakamura, SP. DenBaars, UK. Mishra, and JS. Speck, "High quantum efficiency InGaN/GaN multiple quantum well solar cells with spectral response extending out to 520 nm", Applied Physics Letters, vol. 98, no. 20: AIP, pp. 201107, 2011.
Zhao, Y., S. Tanaka, R. Chung, C-C. Pan, K. Fujito, D. Feezell, J. Speck, S. DenBaars, and S. Nakamura, "Highly Polarized Spontaneous Emission from Semipolar(20-2-1) InGaN/GaN Light-Emitting Diodes", Minerals, Metals and Materials Society/AIME, 420 Commonwealth Dr., P. O. Box 430 Warrendale PA 15086 United States.[np]. Jun: Minerals, Metals and Materials Society/AIME, 420 Commonwealth Dr., P. O. Box 430 Warrendale PA 15086 United States, 2011.
Wang, Q. Jie, C. Yan, N. Yu, C. Pflügl, L. Diehl, F. Capasso, J. Unterhinninghofen, J. Wiersig, T. Edamura, and M. Yamanishi, "Highly unidirectional whispering gallery mode lasers", Conference on Lasers and Electro-Optics/Pacific Rim: Optical Society of America, pp. J143, 2011.
Raring, J. W., M. C. Schmidt, C. Poblenz, B. Li, Y-C. Chang, M. J. Mondry, Y-. Da Lin, M. R. Krames, R. Craig, J. S. Speck, et al., "High-performance blue and green laser diodes based on nonpolar/semipolar bulk GaN substrates", Gallium Nitride Materials and Devices Vi, vol. 7939: International Society for Optics and Photonics, pp. 79390Y, 2011.
Schmidt, M. C., C. Poblenz, Y-C. Chang, B. Li, M. J. Mondry, J. Iveland, M. R. Krames, R. Craig, J. W. Raring, J. S. Speck, et al., "High-performance blue and green laser diodes based on nonpolar/semipolar GaN substrates", Laser Technology for Defense and Security VII, vol. 8039: International Society for Optics and Photonics, pp. 80390D, 2011.
Farrell, RM., DA. Haeger, PS. Hsu, MC. Schmidt, K. Fujito, DF. Feezell, SP. DenBaars, JS. Speck, and S. Nakamura, "High-power blue-violet AlGaN-cladding-free m-plane InGaN/GaN laser diodes", Applied Physics Letters, vol. 99, no. 17: AIP, pp. 171113, 2011.
Zhao, Y., S. Tanaka, C-C. Pan, K. Fujito, D. Feezell, J. S. Speck, S. P. DenBaars, and S. Nakamura, "High-power blue-violet semipolar (2021) InGaN/GaN light-emitting diodes with low efficiency droop at 200 A/cm2", Applied physics express, vol. 4, no. 8: IOP Publishing, pp. 082104, 2011.
2012
Hu, Y., S. Kraemer, JS. Speck, and PT. Fini, "HAADF-STEM and TEM Investigation on the Structure of ${$-2110$}$ Prismatic Stacking Faults in a-plane GaN", Microscopy and Microanalysis, vol. 18, no. S2: Cambridge University Press, pp. 1342, 2012.
Bierwagen, O., S. Choi, and J. S. Speck, "Hall and Seebeck measurement of a p-n layer stack: Determining InN bulk hole transport properties in the presence of a strong surface electron accumulation layer", Physical Review B, vol. 85, no. 16: APS, pp. 165205, 2012.
Speck, J. S., "Heteroepitaxial Lattice Mismatch Stress Relaxation in Nonpolar and Semipolar GaN by Dislocation Glide", Meeting Abstracts, no. 43: The Electrochemical Society, pp. 3202–3202, 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.
Zhao, Y., S. Tanaka, C-Y. Huang, D. F. Feezell, J. S. Speck, S. P. DenBaars, and S. Nakamura, High indium uptake and high polarization ratio for group-iii nitride optoelectronic devices fabricated on a semipolar (20-2-1) plane of a gallium nitride substrate, 2012.
Speck, J. S., S. P. DenBaars, U. K. Mishra, and S. Nakamura, High Performance InGaN-Based Solar Cells: DTIC Document, 2012.
Matioli, E., S. Brinkley, K. M. Kelchner, Y-L. Hu, S. Nakamura, S. DenBaars, J. Speck, and C. Weisbuch, "High-brightness polarized light-emitting diodes", Light: Science & Applications, vol. 1, no. 8: Nature Publishing Group, pp. e22, 2012.
Pan, C-C., S. Tanaka, F. Wu, Y. Zhao, J. S. Speck, S. Nakamura, S. P. DenBaars, and D. Feezell, "High-power, low-efficiency-droop semipolar (2021) single-quantum-well blue light-emitting diodes", Applied Physics Express, vol. 5, no. 6: IOP Publishing, pp. 062103, 2012.

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