Publications

Found 696 results
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2010
Schley, P., J. Räthel, E. Sakalauskas, G. Gobsch, M. Wieneke, J. Bläsing, A. Krost, G. Koblmüller, JS. Speck, and RDAM. Goldhahn, "Optical anisotropy of A-and M-plane InN grown on free-standing GaN substrates", physica status solidi (a), vol. 207, no. 5: Wiley Online Library, pp. 1062–1065, 2010.
Schley, P., J. Räthel, E. Sakalauskas, G. Gobsch, M. Wieneke, J. Bläsing, A. Krost, G. Koblmüller, JS. Speck, and RDAM. Goldhahn, "Optical anisotropy of A-and M-plane InN grown on free-standing GaN substrates", physica status solidi (a), vol. 207, no. 5: Wiley Online Library, pp. 1062–1065, 2010.
Raethel, J., P. Schley, E. Sakalauskas, G. Gobsch, R. Mueller, T. A. Klar, J. Pezoldt, R. Goldhahn, G. Koblmueller, J. S. Speck, et al., "Optical anisotropy of a-and m-plane InN grown on free-standing GaN substrates", Verhandlungen der Deutschen Physikalischen Gesellschaft, 2010.
Raethel, J., P. Schley, E. Sakalauskas, G. Gobsch, R. Mueller, T. A. Klar, J. Pezoldt, R. Goldhahn, G. Koblmueller, J. S. Speck, et al., "Optical anisotropy of a-and m-plane InN grown on free-standing GaN substrates", Verhandlungen der Deutschen Physikalischen Gesellschaft, 2010.
Farrell, R. M., M. C. Schmidt, K-C. Kim, H. Masui, D. F. Feezell, J. S. Speck, S. P. DenBaars, and S. Nakamura, Optimization of laser bar orientation for nonpolar and semipolar (Ga, Al, In, B) N diode lasers, 2010.
Farrell, RM., DA. Haeger, X. Chen, CS. Gallinat, RW. Davis, M. Cornish, K. Fujito, S. Keller, SP. DenBaars, S. Nakamura, et al., "Origin of pyramidal hillocks on GaN thin films grown on free-standing m-plane GaN substrates", Applied Physics Letters, vol. 96, no. 23: AIP, pp. 231907, 2010.
Keller, S., Y. Dora, F. Wu, X. Chen, S. Chowdury, SP. DenBaars, JS. Speck, and UK. Mishra, "Properties of N-polar GaN films and AlGaN/GaN heterostructures grown on (111) silicon by metal organic chemical vapor deposition", Applied Physics Letters, vol. 97, no. 14: AIP, pp. 142109, 2010.
Raring, J. W., E. M. Hall, M. C. Schmidt, C. Poblenz, B. Li, N. Pfister, D. Kebort, Y-C. Chang, D. F. Feezell, R. Craig, et al., "State-of-the-art continuous-wave InGaN laser diodes in the violet, blue, and green wavelength regimes", Laser Technology for Defense and Security VI, vol. 7686: International Society for Optics and Photonics, pp. 76860L, 2010.
Linhart, WM., TD. Veal, PDC. King, G. Koblmüller, CS. Gallinat, JS. Speck, and CF. McConville, "Surface, bulk, and interface electronic properties of nonpolar InN", Applied Physics Letters, vol. 97, no. 11: AIP, pp. 112103, 2010.
Linhart, WM., TD. Veal, PDC. King, G. Koblmüller, CS. Gallinat, JS. Speck, and CF. McConville, "Surface, bulk, and interface electronic properties of nonpolar InN", Applied Physics Letters, vol. 97, no. 11: AIP, pp. 112103, 2010.
Metcalfe, G. D., H. Shen, M. Wraback, G. Koblmüller, C. Gallinat, F. Wu, and J. S. Speck, "Terahertz Radiation from Nonpolar InN Due to Drift in an Intrinsic In-Plane Electric Field", Applied Physics Express, vol. 3, pp. 092201, 2010.
Dasgupta, S., D. F. Brown, S. Keller, J. S. Speck, U. K. Mishra, and others, "T-gate technology for N-polar GaN-based self-aligned MIS-HEMTs with state-of-the-art f MAX of 127 GHz: Pathway towards scaling to 30nm GaN HEMTs", Device Research Conference (DRC), 2010: IEEE, pp. 155–156, 2010.
Dasgupta, S., Nidhi, D. F. Brown, F. Wu, S. Keller, J. S. Speck, and U. K. Mishra, "Ultralow nonalloyed ohmic contact resistance to self aligned N-polar GaN high electron mobility transistors by In (Ga) N regrowth", Applied physics letters, vol. 96, no. 14: AIP, pp. 143504, 2010.
Dasgupta, S., DF. Nidhi, TE. Mates, S. Keller, JS. Speck, and UK. Mishra, "Ultra-low ohmic contacts to N-polar GaN HEMTs by In (Ga) N based source-drain regrowth by Plasma MBE", Proceedings of CS MANTECH Conference. Oregon, USA, pp. 111–114, 2010.
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, pp. 092105, 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.
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.
Pimputkar, S., S. Kawabata, J. Speck, and S. Nakamura, "Bulk GaN Growth on GaN Seeds of Varying Orientations in Supercritical Basic Ammonia", 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.
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.
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.
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.
Sasikumar, A., A. Arehart, S. Kaun, M. Hoi Wong, J. Speck, U. Mishra, and S. Ringe, "Direct Correlation between EC-0. 57 eV Trap Generation and Field-Induced Degradation in AlGaN/GaN High Electron Mobility Transistors", 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.
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.

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