Publications

Found 107 results
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2007
Keller, S., NA. Fichtenbaum, C. Schaake, CJ. Neufeld, A. David, E. Matioli, Y. Wu, SP. DenBaars, JS. Speck, C. Weisbuch, et al., "Optical properties of GaN nanopillar and nanostripe arrays with embedded InGaN/GaN multi quantum wells", physica status solidi (b), vol. 244, no. 6: Wiley Online Library, pp. 1797–1801, 2007.
Onuma, T., T. Koyama, A. Chakraborty, M. McLaurin, BA. Haskell, PT. Fini, S. Keller, SP. DenBaars, JS. Speck, S. Nakamura, et al., "Papers from the 34th Annual Conference on the Physics and Chemistry of Semiconductor Interfaces-Complex Oxides-Radiative and nonradiative lifetimes in nonpolar m-plane InxGa1-xN/GaN multiple", Journal of Vacuum Science and Technology-Section B, vol. 25, no. 4: Woodbury, NY: Published for the Society by the American Institute of Physics, 1991-, pp. 1524–1528, 2007.
Onuma, T., T. Koyama, A. Chakraborty, M. McLaurin, BA. Haskell, PT. Fini, S. Keller, SP. DenBaars, JS. Speck, S. Nakamura, et al., "Radiative and nonradiative lifetimes in nonpolar m-plane In x Ga 1- x N/ Ga N multiple quantum wells grown on GaN templates prepared by lateral epitaxial overgrowth", Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena, vol. 25, no. 4: AVS, pp. 1524–1528, 2007.
Wu, Y., CG. Moe, S. Keller, SP. DenBaars, and JS. Speck, "Vertical defects in heavily Mg-doped Al0. 69Ga0. 31N", physica status solidi (a), vol. 204, no. 10: Wiley Online Library, pp. 3423–3428, 2007.
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.
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.
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.
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.
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.
Yu, H., L. McCarthy, S. Rajan, S. Keller, S. DenBaars, J. Speck, and U. Mishra, "Ion implanted AlGaN-GaN HEMTs with nonalloyed ohmic contacts", IEEE electron device letters, vol. 26, no. 5: IEEE, pp. 283–285, 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.
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.
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.
2004
Yu, H., L. McCarthy, H. Xing, P. Waltereit, L. Shen, S. Keller, SP. DenBaars, JS. Speck, and UK. Mishra, "Dopant activation and ultralow resistance ohmic contacts to Si-ion-implanted GaN using pressurized rapid thermal annealing", Applied physics letters, vol. 85, no. 22: AIP, pp. 5254–5256, 2004.
Yu, H., L. McCarthy, S. Rajan, S. Keller, SP. DenBaars, JS. Speck, and UK. Mishra, "Ion implantation for unalloyed ohmic contacts to AlGaN/GaN HEMTs", Device Research Conference, 2004. 62nd DRC. Conference Digest [Includes' Late News Papers' volume]: IEEE, pp. 37–38, 2004.
Katona, TM., P. Cantu, S. Keller, Y. Wu, JS. Speck, and SP. DenBaars, "Maskless lateral epitaxial overgrowth of high-aluminum-content Al x Ga 1- x N", Applied physics letters, vol. 84, no. 24: AIP, pp. 5025–5027, 2004.
P Alejandro, C., S. Keller, T. Li, UK. Mishra, JS. Speck, and SP. DenBaars, "MOCVD growth of AlGaN films for solar blind photodetectors", physica status solidi (a), vol. 201, no. 9: Wiley Online Library, pp. 2185–2189, 2004.
Chakraborty, A., H. Xing, MD. Craven, S. Keller, T. Mates, JS. Speck, SP. DenBaars, and UK. Mishra, "Nonpolar a-plane p-type GaN and p-n Junction Diodes", Journal of applied physics, vol. 96, no. 8: AIP, pp. 4494–4499, 2004.
Chakraborty, A., BA. Haskell, S. Keller, JS. Speck, SP. DenBaars, S. Nakamura, and UK. Mishra, "Nonpolar InGaN/ GaN emitters on reduced-defect lateral epitaxially overgrown a-plane GaN with drive-current-independent electroluminescence emission peak", Applied Physics Letters, vol. 85, no. 22: AIP, pp. 5143–5145, 2004.

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