Publications

Found 673 results
Author Title Type [ Year(Desc)]
Filters: Author is Speck, James S  [Clear All Filters]
2011
Pimputkar, S., D. S. Kamber, J. S. Speck, and S. Nakamura, Addition of hydrogen and/or nitrogen containing compounds to the nitrogen-containing solvent used during the ammonothermal growth of group-iii nitride crystals, sep # " 1", 2011.
Farrell, R. M., D. A. Haeger, P. Shan Hsu, M. T. Hardy, K. M. Kelchner, K. Fujito, D. F. Feezell, U. K. Mishra, S. P. DenBaars, J. S. Speck, et al., "AlGaN-cladding-free m-plane InGaN/GaN laser diodes with p-type AlGaN etch stop layers", Applied physics express, vol. 4, no. 9: IOP Publishing, pp. 092105, 2011.
Bryant, B. N., D. S. Kamber, F. Wu, S. Nakamura, and J. S. Speck, "Aluminum nitride grown on lens shaped patterned sapphire by hydride vapor phase epitaxy", physica status solidi (c), vol. 8, no. 5: Wiley Online Library, pp. 1463–1466, 2011.
Wong, M. Hoi, U. Singisetti, J. Lu, J. S. Speck, and U. K. Mishra, "Anomalous output conductance in N-polar GaN-based MIS-HEMTs", Device Research Conference (DRC), 2011 69th Annual: IEEE, pp. 211–212, 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.
Pimputkar, S., D. S. Kamber, J. S. Speck, and S. Nakamura, Controlling relative growth rates of different exposed crystallographic facets of a group-iii nitride crystal during the ammonothermal growth of a group-iii nitride crystal, 2011.
Imer, B. M., J. S. Speck, and S. P. DenBaars, Defect reduction of non-polar and semi-polar III-nitrides with sidewall lateral epitaxial overgrowth (SLEO), 2011.
Huang, C-Y., M. T. Hardy, K. Fujito, D. F. Feezell, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Demonstration of 505 nm laser diodes using wavelength-stable semipolar (20 21) InGaN/GaN quantum wells", Applied Physics Letters, vol. 99, no. 24: AIP, pp. 241115, 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.
Young, E. C., A. E. Romanov, and J. S. Speck, "Determination of Composition and Lattice Relaxation in Semipolar Ternary (In, Al, Ga) N Strained Layers from Symmetric X-ray Diffraction Measurements", Applied physics express, vol. 4, no. 6: IOP Publishing, pp. 061001, 2011.
Kaun, S. W., M. Hoi Wong, S. Dasgupta, S. Choi, R. Chung, U. K. Mishra, and J. S. Speck, "Device physics-024101 Effects of Threading Dislocation Density on the Gate Leakage of AlGaN/GaN Heterostructures for High Electron Mobility Transistors", Applied Physics Express, vol. 4, no. 2, 2011.
Rangel, E., E. Matioli, Y-S. Choi, C. Weisbuch, J. S. Speck, and E. L. Hu, "Directionality control through selective excitation of low-order guided modes in thin-film InGaN photonic crystal light-emitting diodes", Applied physics letters, vol. 98, no. 8: AIP, pp. 081104, 2011.
Miller, N., E. E. Haller, G. Koblmüller, C. Gallinat, J. S. Speck, W. J. Schaff, M. E. Hawkridge, K. Man Yu, and J. W. Ager III, "Effect of charged dislocation scattering on electrical and electrothermal transport in n-type InN", Physical Review B, vol. 84, no. 7: APS, pp. 075315, 2011.
Neufeld, C. J., S. C. Cruz, R. M. Farrell, M. Iza, J. R. Lang, S. Keller, S. Nakamura, S. P. DenBaars, J. S. Speck, and U. K. Mishra, "Effect of doping and polarization on carrier collection in InGaN quantum well solar cells", Applied Physics Letters, vol. 98, no. 24: AIP, pp. 243507, 2011.
Kaun, S. W., M. Hoi Wong, S. Dasgupta, S. Choi, R. Chung, U. K. Mishra, and J. S. Speck, "Effects of threading dislocation density on the gate leakage of AlGaN/GaN heterostructures for high electron mobility transistors", Applied physics express, vol. 4, no. 2: IOP Publishing, pp. 024101, 2011.
Mayer, M. A., S. Choi, O. Bierwagen, H. M. Smith III, E. E. Haller, J. S. Speck, and W. Walukiewicz, "Electrical and optical properties of p-type InN", Journal of Applied Physics, vol. 110, no. 12: AIP, pp. 123707, 2011.
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, 2011.
Fujiwara, T., R. Yeluri, D. Denninghoff, J. Lu, S. Keller, J. S. Speck, S. P. DenBaars, and U. K. Mishra, "Enhancement-mode m-plane AlGaN/GaN heterojunction field-effect transistors with+ 3 V of threshold voltage using Al2O3 deposited by atomic layer deposition", Applied physics express, vol. 4, no. 9: IOP Publishing, pp. 096501, 2011.
Singisetti, U., M. Hoi Wong, S. Dasgupta, J. S. Speck, and U. K. Mishra, "Enhancement-mode N-polar GaN metal–insulator–semiconductor field effect transistors with current gain cutoff frequency of 120 GHz", Applied physics express, vol. 4, no. 2: IOP Publishing, pp. 024103, 2011.
Singisetti, U., M. Hoi Wong, S. Dasgupta, B. Swenson, B. J. Thibeault, J. S. Speck, U. K. Mishra, and others, "Enhancement-mode N-polar GaN MISFETs with self-aligned source/drain regrowth", IEEE Electron Device Letters, vol. 32, no. 2: IEEE, pp. 137–139, 2011.
Dasgupta, S., A. Raman, J. S. Speck, U. K. Mishra, and others, "Experimental demonstration of III-nitride hot-electron transistor with GaN base", IEEE Electron Device Letters, vol. 32, no. 9: IEEE, pp. 1212–1214, 2011.
Hu, Y-L., S. Kraemer, P. T. Fini, and J. S. Speck, "Extended defect structure of a-plane GaN produced by sidewall lateral epitaxial overgrowth", Journal of Crystal Growth, vol. 331, no. 1: Elsevier, pp. 49–55, 2011.
Kamber, D. S., S. Pimputkar, M. Saito, S. P. DenBaars, J. S. Speck, and S. Nakamura, Group-iii nitride monocrystal with improved purity and method of producing the same, 2011.
Keller, S., Y. Dora, S. Chowdhury, F. Wu, X. Chen, S. P. DenBaars, J. S. Speck, and U. K. Mishra, "Growth and characterization of N-polar GaN and AlGaN/GaN HEMTs on (111) silicon", physica status solidi (c), vol. 8, no. 7-8: Wiley Online Library, pp. 2086–2088, 2011.
Haskell, B. A., M. D. Craven, P. T. Fini, S. P. DenBaars, J. S. Speck, and S. Nakamura, Growth of reduced dislocation density non-polar gallium nitride, 2011.

Pages