Publications

Found 226 results
Author Title Type [ Year(Desc)]
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2005
Sharma, R., PM. Pattison, H. Masui, RM. Farrell, TJ. Baker, BA. Haskell, F. Wu, SP. DenBaars, JS. Speck, and S. Nakamura, "Demonstration of a semipolar (101¯3¯) In Ga N/ Ga N green light emitting diode", Applied Physics Letters, vol. 87, no. 23: AIP, pp. 231110, 2005.
Palacios, T., A. Chakraborty, S. Rajan, C. Poblenz, S. Keller, SP. DenBaars, JS. Speck, and UK. Mishra, "High-power AlGaN/GaN HEMTs for Ka-band applications", IEEE Electron Device Letters, vol. 26, no. 11: IEEE, pp. 781–783, 2005.
Garrett, GA., H. Shen, M. Wraback, B. Imer, B. Haskell, JS. Speck, S. Keller, S. Nakamura, and SP. DenBaars, "Intensity dependent time-resolved photoluminescence studies of GaN/AlGaN multiple quantum wells of varying well width on laterally overgrown a-plane and planar c-plane GaN", physica status solidi (a), vol. 202, no. 5: Wiley Online Library, pp. 846–849, 2005.
Chichibu, SF., A. Uedono, T. Onuma, T. Sota, BA. Haskell, SP. DenBaars, JS. Speck, and S. Nakamura, "Limiting factors of room-temperature nonradiative photoluminescence lifetime in polar and nonpolar GaN studied by time-resolved photoluminescence and slow positron annihilation techniques", Applied Physics Letters, vol. 86, no. 2: AIP, pp. 021914, 2005.
Onuma, T., A. Chakraborty, BA. Haskell, S. Keller, SP. DenBaars, JS. Speck, S. Nakamura, UK. Mishra, T. Sota, and SF. Chichibu, "Localized exciton dynamics in nonpolar (11 2\= 0) In x Ga 1- x N multiple quantum wells grown on GaN templates prepared by lateral epitaxial overgrowth", Applied Physics Letters, vol. 86, no. 15: AIP, pp. 151918, 2005.
Akopian, N., G. Bahir, D. Gershoni, MD. Craven, JS. Speck, and SP. DenBaars, "Optical evidence for lack of polarization in (11 2\= 0) oriented GaN/(AlGa) N quantum structures", Applied Physics Letters, vol. 86, no. 20: AIP, pp. 202104, 2005.
Ghosh, S., P. Misra, HT. Grahn, B. Imer, S. Nakamura, SP. DenBaars, Speck, and JS, Polarized photoreflectance spectroscopy of strained A-plane GaN films on R-plane sapphire: AIP, 2005.
Yu, H., L. McCarthy, H. Xing, P. Waltereit, L. Shen, S. Keller, SP. DenBaars, JS. Speck, and UK. Mishra, "Publisherís Note:ìDopant activation and ultralow resistance ohmic contacts to Si-ion-implanted GaN using pressurized rapid thermal annealingî[Appl. Phys. Lett. 85, 5254 (2004)]", Applied Physics Letters, vol. 86, no. 5: AIP, pp. 5254, 2005.
Chichibu, SF., T. Koida, MD. Craven, BA. Haskell, T. Onuma, T. Sota, JS. Speck, SP. DenBaars, and S. Nakamura, "Reduction of bound-state and nonradiative defect densities in nonpolar (11&2macr; 0) AlGaN/GaN quantum wells by the use of lateral epitaxial overgrowth technique", physica status solidi (c), vol. 2, no. 7: WILEY-VCH Verlag, pp. 2700–2703, 2005.
Cantu, P., F. Wu, P. Waltereit, S. Keller, AE. Romanov, SP. DenBaars, and JS. Speck, "Role of inclined threading dislocations in stress relaxation in mismatched layers", Journal of applied physics, vol. 97, no. 10: AIP, pp. 103534, 2005.
Rudin, S., GA. Garrett, H. Shen, M. Wraback, B. Imer, B. Haskell, JS. Speck, S. Keller, S. Nakamura, and SP. DenBaars, "Temperature-dependent Radiative Lifetimes of Excitons in Non-polar GaN/AlGaN Quantum Wells", Semiconductor Device Research Symposium, 2005 International: IEEE, pp. 225–226, 2005.
2006
Barabash, R. I., O. M. Barabash, G. E. Ice, C. Roder, S. Figge, S. Einfeldt, D. Hommel, TM. Katona, JS. Speck, SP. DenBaars, et al., "Characterization of crystallographic properties and defects via X-ray microdiffraction in GaN (0001) layers", physica status solidi (a), vol. 203, no. 1: WILEY-VCH Verlag, pp. 142–148, 2006.
Romanov, AE., GE. Beltz, P. Cantu, F. Wu, S. Keller, SP. DenBaars, and JS. Speck, "Cracking of III-nitride layers with strain gradients", Applied physics letters, vol. 89, no. 16: AIP, pp. 161922, 2006.
Chakraborty, A., KC. Kim, F. Wu, JS. Speck, SP. DenBaars, and UK. Mishra, "Defect reduction in nonpolar a-plane GaN films using in situ Si N x nanomask", Applied physics letters, vol. 89, no. 4: AIP, pp. 041903, 2006.
Arehart, AR., B. Moran, JS. Speck, UK. Mishra, SP. DenBaars, and SA. Ringel, "Effect of threading dislocation density on Ni/ n-Ga N Schottky diode I-V characteristics", Journal of applied physics, vol. 100, no. 2: AIP, pp. 023709, 2006.
Onuma, T., A. Chakraborty, BA. Haskell, S. Keller, T. Sota, UK. Mishra, SP. DenBaars, JS. Speck, S. Nakamura, and SF. Chichibu, "Exciton dynamics in nonpolar (11$$\backslash$bar 2 $0) InGaN/GaN multiple quantum wells grown on GaN templates prepared by lateral epitaxial overgrowth", physica status solidi (c), vol. 3, no. 6: WILEY-VCH Verlag, pp. 2082–2086, 2006.
Shen, L., L. McCarthy, T. Palacios, MH. Wong, C. Poblenz, A. Corrion, S. Keller, SP. DenBaars, JS. Speck, and UK. Mishra, "Improved processing technology for GaN-capped deeply-recessed GaN HEMTs without surface passivation", Device Research Conference, 2006 64th: IEEE, pp. 101–102, 2006.
Barabash, RI., G. E. Ice, W. Liu, C. Roder, S. Figge, S. Einfeldt, D. Hommel, TM. Katona, JS. Speck, SP. DenBaars, et al., "Mapping misorientation and crystallographic tilt in GaN layers via polychromatic microdiffraction", physica status solidi (b), vol. 243, no. 7: Wiley Online Library, pp. 1508–1513, 2006.
Keller, S., C. Schaake, NA. Fichtenbaum, CJ. Neufeld, Y. Wu, K. McGroddy, A. David, SP. DenBaars, C. Weisbuch, JS. Speck, et al., "Optical and structural properties of GaN nanopillar and nanostripe arrays with embedded In Ga N/ Ga N multi-quantum wells", Journal of Applied Physics, vol. 100, no. 5: AIP, pp. 054314, 2006.
Koyama, T., T. Onuma, H. Masui, A. Chakraborty, BA. Haskell, S. Keller, UK. Mishra, JS. Speck, S. Nakamura, SP. DenBaars, et al., "Prospective emission efficiency and in-plane light polarization of nonpolar m-plane In x Ga 1- x N/ Ga N blue light emitting diodes fabricated on freestanding GaN substrates", Applied physics letters, vol. 89, no. 9: AIP, pp. 091906, 2006.
Armstrong, A., A. Chakraborty, JS. Speck, SP. DenBaars, UK. Mishra, and SA. Ringel, "Quantitative observation and discrimination of AlGaN-and GaN-related deep levels in Al Ga N/ Ga N heterostructures using capacitance deep level optical spectroscopy", Applied physics letters, vol. 89, no. 26: AIP, pp. 262116, 2006.
Kaeding, JF., H. Asamizu, H. Sato, M. Iza, TE. Mates, SP. DenBaars, JS. Speck, and S. Nakamura, "Realization of high hole concentrations in Mg doped semipolar (10 1\= 1\=) GaN", Applied physics letters, vol. 89, no. 20: AIP, pp. 202104, 2006.
Onuma, T., S. Keller, SP. DenBaars, JS. Speck, S. Nakamura, UK. Mishra, T. Sota, and SF. Chichibu, "Recombination dynamics of a 268 nm emission peak in Al 0.53 In 0.11 Ga 0.36 N/ Al 0.58 In 0.02 Ga 0.40 N multiple quantum wells", Applied Physics Letters, vol. 88, no. 11: AIP, pp. 111912, 2006.
Shen, L., T. Palacios, C. Poblenz, A. Corrion, A. Chakraborty, N. Fichtenbaum, S. Keller, SP. DenBaars, JS. Speck, and UK. Mishra, "Unpassivated high power deeply recessed GaN HEMTs with fluorine-plasma surface treatment", IEEE Electron Device Letters, vol. 27, no. 4: IEEE, pp. 214–216, 2006.

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