Publications

Found 384 results
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2008
Chu, R., C. Poblenz, M. Hoi Wong, S. Dasgupta, S. Rajan, Y. Pei, F. Recht, L. Shen, J. S. Speck, and U. K. Mishra, "Semiconductor, superconductor, spintronic, dielectric, and organic materials-Improved Performance of Plasma-Assisted Molecular Beam Epitaxy Grown AlGaN/GaN High Electron Mobility Transistors with Gate-Recess and CF4-Treatment", Applied Physics Express, vol. 1, no. 6, pp. 61101, 2008.
Corrion, AL., C. Poblenz, F. Wu, and JS. Speck, "Structural and morphological properties of GaN buffer layers grown by ammonia molecular beam epitaxy on SiC substrates for AlGaN/GaN high electron mobility transistors", Journal of Applied Physics, vol. 103, no. 9: AIP, pp. 093529, 2008.
Pei, Y., C. Poblenz, AL. Corrion, R. Chu, L. Shen, JS. Speck, and UK. Mishra, "X-and Ka-band power performance of AlGaN/GaN HEMTs grown by ammonia-MBE", Electronics Letters, vol. 44, no. 9: IET, pp. 598–598, 2008.
Pei, Y., C. Poblenz, AL. Corrion, R. Chu, L. Shen, JS. Speck, and UK. Mishra, "X-and Ka-band power performance of AlGaN/GaN HEMTs grown by ammonia-MBE", Electronics Letters, vol. 44, no. 9: IET, pp. 598–598, 2008.
2009
Suh, I., P. Roblin, Y. Ko, C-K. Yang, A. Malonis, A. Arehart, S. Ringel, C. Poblenz, Y. Pei, J. Speck, et al., "Additive phase noise measurements of AlGaN/GaN HEMTs using a large signal network analyzer and a tunable monochromatic light source", Microwave Measurement Symposium, 2009 74th ARFTG: IEEE, pp. 1–5, 2009.
Suh, I., P. Roblin, Y. Ko, C-K. Yang, A. Malonis, A. Arehart, S. Ringel, C. Poblenz, Y. Pei, J. Speck, et al., "Additive phase noise measurements of AlGaN/GaN HEMTs using a large signal network analyzer and a tunable monochromatic light source", Microwave Measurement Symposium, 2009 74th ARFTG: IEEE, pp. 1–5, 2009.
Yang, C-K., P. Roblin, A. Malonis, A. Arehart, S. Ringel, C. Poblenz, Y. Pei, J. Speck, and U. Mishra, "Characterization of traps in AlGaN/GaN HEMTs with a combined large signal network analyzer/deep level optical spectrometer system", Microwave Symposium Digest, 2009. MTT'09. IEEE MTT-S International: IEEE, pp. 1209–1212, 2009.
Yang, C-K., P. Roblin, A. Malonis, A. Arehart, S. Ringel, C. Poblenz, Y. Pei, J. Speck, and U. Mishra, "Characterization of traps in AlGaN/GaN HEMTs with a combined large signal network analyzer/deep level optical spectrometer system", Microwave Symposium Digest, 2009. MTT'09. IEEE MTT-S International: IEEE, pp. 1209–1212, 2009.
Koehl, WF., MH. Wong, C. Poblenz, B. Swenson, UK. Mishra, JS. Speck, and DD. Awschalom, "Current-induced spin polarization in gallium nitride", Applied Physics Letters, vol. 95, no. 7: AIP, pp. 072110, 2009.
Zhong, H., A. Tyagi, N. Pfaff, M. Saito, K. Fujito, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Enhancing the light extraction efficiency of blue semipolar (1011) nitride-based light emitting diodes through surface patterning", Japanese Journal of Applied Physics, vol. 48, no. 3R: IOP Publishing, pp. 030201, 2009.
Dasgupta, S., Y. Pei, B. L. Swenson, D. F. Brown, S. Keller, J. S. Speck, U. K. Mishra, and others, "$ f_ ${$T$}$ $ and $ f_ ${$$\backslash$rm MAX$}$ $ of 47 and 81 GHz, Respectively, on N-Polar GaN/AlN MIS-HEMT", IEEE Electron Device Letters, vol. 30, no. 6: IEEE, pp. 599–601, 2009.
Akopian, N., A. Vardi, G. Bahir, V. Garber, E. Ehrenfreund, D. Gershoni, C. Poblenz, CR. Elsass, IP. Smorchkova, and JS. Speck, "Fermi edge singularity observed in GaN/AlGaN heterointerfaces", Applied Physics Letters, vol. 94, no. 22: AIP, pp. 223502, 2009.
Wong, M. Hoi, Y. Pei, D. F. Brown, S. Keller, J. S. Speck, and U. K. Mishra, "High performance MBE-grown N-face microwave GaN HEMTs with> 70% PAE", Device Research Conference, 2009. DRC 2009: IEEE, pp. 157–158, 2009.
Wong, M. Hoi, Y. Pei, J. S. Speck, and U. K. Mishra, "High power N-face GaN high electron mobility transistors grown by molecular beam epitaxy with optimization of AlN nucleation", Applied Physics Letters, vol. 94, no. 18: AIP, pp. 182103, 2009.
Navarro, A., C. Rivera, J. Pereiro, E. Munoz, B. Imer, SP. DenBaars, and JS. Speck, "High responsivity A-plane GaN-based metal-semiconductor-metal photodetectors for polarization-sensitive applications", Applied Physics Letters, vol. 94, no. 21: AIP, pp. 213512, 2009.
Wong, M. Hoi, Y. Pei, D. F. Brown, S. Keller, J. S. Speck, and U. K. Mishra, "High-performance N-face GaN microwave MIS-HEMTs with> 70% power-added efficiency", IEEE Electron Device Letters, vol. 30, no. 8: IEEE, pp. 802–804, 2009.
Pimputkar, S., J. S. Speck, S. P. DenBaars, and S. Nakamura, "Prospects for LED lighting", Nature photonics, vol. 3, no. 4: Nature Publishing Group, pp. 180, 2009.
2010
Arehart, AR., C. Poblenz, JS. Speck, and SA. Ringel, "Effect of nitrogen plasma power on defect levels in Ni/n-GaN Schottky diodes grown by molecular beam epitaxy", Journal of Applied Physics, vol. 107, no. 5: AIP, pp. 054518, 2010.
Speck, J. S., B. A. Haskell, M. P Pattison, and T. J. Baker, Etching technique for the fabrication of thin (Al, In, Ga) N layers, 2010.
Pimputkar, S., D. S. Kamber, M. Saito, S. P. DenBaars, J. S. Speck, and S. Nakamura, Group-iii nitride monocrystal with improved crystal quality grown on an etched-back seed crystal and method of producing the same, 2010.
Matioli, E., E. Rangel, M. Iza, B. Fleury, N. Pfaff, J. Speck, E. Hu, and C. Weisbuch, "High extraction efficiency light-emitting diodes based on embedded air-gap photonic-crystals", Applied physics letters, vol. 96, no. 3: AIP, pp. 031108, 2010.
Raring, J. W., M. C. Schmidt, C. Poblenz, Y-C. Chang, M. J. Mondry, B. Li, J. Iveland, B. Walters, M. R. Krames, R. Craig, et al., "High-efficiency blue and true-green-emitting laser diodes based on non-c-plane oriented GaN substrates", Applied physics express, vol. 3, no. 11: IOP Publishing, pp. 112101, 2010.
Raring, J. W., E. M. Hall, M. C. Schmidt, C. Poblenz, B. Li, N. Pfister, D. F. Feezell, R. Craig, J. S. Speck, S. P. DenBaars, et al., "High-power high-efficiency continuous-wave InGaN laser diodes in the violet, blue, and green wavelength regimes", Gallium Nitride Materials and Devices V, vol. 7602: International Society for Optics and Photonics, pp. 760218, 2010.
Raring, J. W., E. M. Hall, M. C. Schmidt, C. Poblenz, B. Li, N. Pfister, D. F. Feezell, R. Craig, J. S. Speck, S. P. DenBaars, et al., "High-power high-efficiency continuous-wave InGaN laser diodes in the violet, blue, and green wavelength regimes", Gallium Nitride Materials and Devices V, vol. 7602: International Society for Optics and Photonics, pp. 760218, 2010.
Arehart, AR., T. Homan, MH. Wong, C. Poblenz, JS. Speck, and SA. Ringel, "Impact of N-and Ga-face polarity on the incorporation of deep levels in n-type GaN grown by molecular beam epitaxy", Applied Physics Letters, vol. 96, no. 24: AIP, pp. 242112, 2010.

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