Publications

Found 161 results
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2015
Wu, Y-R., C-K. Wu, C-K. Li, D. A. Browne, and J. S. Speck, "Study of percolation transport in the InGaN/AlGaN LEDs with random alloy fluctuation", Conference on Lasers and Electro-Optics/Pacific Rim: Optical Society of America, pp. 25H2_2, 2015.
2013
Preissler, N., O. Bierwagen, A. T. Ramu, and J. S. Speck, "The Seebeck coefficient of In 2 O 3-Inferences on causes of unintentional conductivity and electron effective mass", Verhandlungen der Deutschen Physikalischen Gesellschaft, 2013.
Speck, J. S., E. L. Hu, C. C. A. Weisbuch, Y. Seok Choi, G. Koblmüller, M. Iza, and C. Hurni, SELECTIVE DRY ETCHING OF N-FACE (Al, In, Ga) N HETEROSTRUCTURES, apr # " 25", 2013.
Feezell, D. F., J. S. Speck, S. P. DenBaars, and S. Nakamura, "Semipolar $(${$$\backslash$hbox ${$20$}$$}$$\backslash$bar ${$${$$\backslash$hbox ${$2$}$$}$$}$$\backslash$bar ${$${$$\backslash$hbox ${$1$}$$}$$}$) $ InGaN/GaN Light-Emitting Diodes for High-Efficiency Solid-State Lighting", Journal of Display Technology, vol. 9, no. 4: IEEE, pp. 190–198, 2013.
Cardwell, DW., A. Sasikumar, AR. Arehart, SW. Kaun, J. Lu, S. Keller, JS. Speck, UK. Mishra, SA. Ringel, and JP. Pelz, "Spatially-resolved spectroscopic measurements of Ec- 0.57 eV traps in AlGaN/GaN high electron mobility transistors", Applied Physics Letters, vol. 102, no. 19: AIP, pp. 193509, 2013.
Drabold, D. A., A. L. Efros, E. Fortunato, B. Gil, S. T. B. Gönnenwein, N. Grandjean, M. J Gregg, A. Hoffmann, A. A. Kaminskii, C-S. Lee, et al., Stefan Hildebrandt Sabine Bahrs, 2013.
Connelly, B. C., N. T. Woodward, G. D. Metcalfe, L. E. Rodak, N. C. Das, M. L. Reed, A. V. Sampath, H. Shen, M. Wraback, R. M. Farrell, et al., "Study of temperature-dependent carrier transport in a p-GaN/i-InGaN/n-GaN solar cell heterostructure using ultrafast spectroscopy", Lasers and Electro-Optics (CLEO), 2013 Conference on: IEEE, pp. 1–2, 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.
Hardy, M. T., S. Nakamura, S. P. DenBaars, and J. Stephen Speck, SUPPRESSION OF RELAXATION BY LIMITED AREA EPITAXY ON NON-C-PLANE (In, Al, B, Ga) N, 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.
2012
Dasgupta, S., J. Lu, J. S. Speck, U. K. Mishra, and others, "Scaled self-aligned N-polar GaN/AlGaN MIS-HEMTs with $ f_ ${$T$}$ $ of 275 GHz", IEEE Electron Device Letters, vol. 33, no. 7: IEEE, pp. 961–963, 2012.
Dasgupta, S., J. Lu, J. S. Speck, U. K. Mishra, and others, "Self-aligned N-polar GaN/InAlN MIS-HEMTs with record extrinsic transconductance of 1105 mS/mm", IEEE Electron Device Letters, vol. 33, no. 6: IEEE, pp. 794–796, 2012.
Zhao, Y., C-Y. Huang, S. Tanaka, C-C. Pan, K. Fujito, D. Feezell, J. S. Speck, S. DenBaars, and S. Nakamura, "Semipolar (20-2-1) Blue and Green InGaN Light-Emitting Diodes", CLEO: Applications and Technology: Optical Society of America, pp. JTh4J–2, 2012.
Huang, C-Y., Y. Zhao, M. Hardy, D. Feezell, J. S. Speck, S. DenBaars, and S. Nakamura, "Semipolar (20-2-1) Laser Diodes (λ= 505nm) with Wavelength-Stable InGaN/GaN Quantum Wells", CLEO: Science and Innovations: Optical Society of America, pp. CTu2N–5, 2012.
Hardy, M. T., S. P. DenBaars, J. S. Speck, and S. Nakamura, Strain compensated short-period superlattices on semipolar or nonpolar gan for defect reduction and stress engineering, 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.
2011
Dasgupta, S., DF. Brown, JS. Speck, UK. Mishra, and others, "Scaling behavior and velocity enhancement in self-aligned N-polar GaN/AlGaN HEMTs with maximum fT of 163 GHz", Device Research Conference (DRC), 2011 69th Annual: IEEE, pp. 141–142, 2011.
Dasgupta, S., D. F. Brown, U. Singisetti, S. Keller, J. S. Speck, U. K. Mishra, and others, "Self-aligned technology for N-polar GaN/Al (Ga) N MIS-HEMTs", IEEE Electron Device Letters, vol. 32, no. 1: IEEE, pp. 33–35, 2011.

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