Publications

Found 632 results
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2011
Chung, R. B., O. Bierwagen, F. Wu, S. Keller, S. P. DenBaars, J. S. Speck, and S. Nakamura, "Semiconductors, dielectrics, and organic materials-101001 Temperature Dependent Capacitance-Voltage Analysis of Unintentionally Doped and Si Doped Al0. 82 In0. 18N Grown on GaN", Japanese Journal of Applied Physics, vol. 50, no. 10, 2011.
Chung, R. B., O. Bierwagen, F. Wu, S. Keller, S. P. DenBaars, J. S. Speck, and S. Nakamura, "Temperature Dependent Capacitance–Voltage Analysis of Unintentionally Doped and Si Doped Al0. 82In0. 18N Grown on GaN", Japanese Journal of Applied Physics, vol. 50, no. 10R: IOP Publishing, pp. 101001, 2011.
Dasgupta, S., J. Lu, F. Wu, S. Keller, JS. Speck, UK. Mishra, and others, "Trap-related delay analysis of self-aligned N-polar GaN/InAlN HEMTs with record extrinsic g m of 1105 mS/mm", Device Research Conference (DRC), 2011 69th Annual: IEEE, pp. 279–280, 2011.
Singisett, U., M. Hoi Wong, J. S. Speck, and U. K. Mishra, "Vertically scaled 5 nm GaN channel enhancement-mode N-polar GaN MOS-HFET with 560 mS/mm g m and 0.76 Ω-mm R on", Device Research Conference (DRC), 2011 69th Annual: IEEE, pp. 1–2, 2011.
Wong, MH., DF. Brown, ML. Schuette, H. Kim, V. Balasubramanian, W. Lu, JS. Speck, and UK. Mishra, "X-band power performance of N-face GaN MIS-HEMTs", Electronics Letters, vol. 47, no. 3: IET Digital Library, pp. 214–215, 2011.
Nagata, T., O. Bierwagen, ME. White, MY. Tsai, Y. Yamashita, H. Yoshikawa, N. Ohashi, K. Kobayashi, T. Chikyow, and JS. Speck, "XPS study of Sb-/In-doping and surface pinning effects on the Fermi level in SnO 2 (101) thin films", Applied Physics Letters, vol. 98, no. 23: AIP, pp. 232107, 2011.
2010
Kelchner, K. M., R. M. Farrell, Y-. Da Lin, P. Shan Hsu, M. T. Hardy, F. Wu, D. A. Cohen, H. Ohta, J. S. Speck, S. Nakamura, et al., "Continuous-wave operation of pure blue AlGaN-cladding-free nonpolar InGaN/GaN laser diodes", Applied Physics Express, vol. 3, no. 9: IOP Publishing, pp. 092103, 2010.
Young, E. C., C. S. Gallinat, A. E. Romanov, A. Tyagi, F. Wu, and J. S. Speck, "Critical thickness for onset of plastic relaxation in (1122) and (2021) semipolar AlGaN heterostructures", Applied physics express, vol. 3, no. 11: IOP Publishing, pp. 111002, 2010.
Gallinat, CS., G. Koblmüller, F. Wu, and JS. Speck, "Evaluation of threading dislocation densities in In-and N-face InN", Journal of Applied Physics, vol. 107, no. 5: AIP, pp. 053517, 2010.
Matioli, E., B. Fleury, E. Rangel, T. Melo, E. Hu, J. Speck, and C. Weisbuch, "High extraction efficiency GaN-based photonic-crystal light-emitting diodes: Comparison of extraction lengths between surface and embedded photonic crystals", Applied physics express, vol. 3, no. 3: IOP Publishing, pp. 032103, 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.
Da Lin, Y-., S. Yamamoto, C-Y. Huang, C-L. Hsiung, F. Wu, K. Fujito, H. Ohta, J. S. Speck, S. P. DenBaars, and S. Nakamura, "High quality InGaN/AlGaN multiple quantum wells for semipolar InGaN green laser diodes", Applied Physics Express, vol. 3, no. 8: IOP Publishing, pp. 082001, 2010.
Da Lin, Y-., S. Yamamoto, C-Y. Huang, C-L. Hsiung, F. Wu, K. Fujito, H. Ohta, J. S. Speck, S. P. DenBaars, and S. Nakamura, "High Quality InGaN/AlGaN Multiple Quantum Wells for Semipolar InGaN Green Laser Diodes", Applied Physics Express, vol. 3, pp. 082001, 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.
Speck, J., E. Hu, C. Weisbuch, Y-S. Choi, K. McGroddy, G. Koblmüller, E. Matioli, E. Rangel, F. Rol, and D. Simeonov, High-Efficiency Nitride-Base Photonic Crystal Light Sources: The Regents Of The University Of California, 2010.
Miller, N., JW. Ager III, HM. Smith III, MA. Mayer, KM. Yu, EE. Haller, W. Walukiewicz, WJ. Schaff, C. Gallinat, G. Koblmüller, et al., "Hole transport and photoluminescence in Mg-doped InN", Journal of Applied Physics, vol. 107, no. 11: AIP, pp. 113712, 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.
Rangel, E., E. Matioli, H-T. Chen, Y-S. Choi, C. Weisbuch, J. S. Speck, and E. L. Hu, "Interplay of cavity thickness and metal absorption in thin-film InGaN photonic crystal light-emitting diodes", Applied Physics Letters, vol. 97, no. 6: AIP, pp. 061118, 2010.
Young, E. C., F. Wu, A. E. Romanov, A. Tyagi, C. S. Gallinat, S. P. DenBaars, S. Nakamura, and J. S. Speck, "Lattice tilt and misfit dislocations in (1122) semipolar GaN heteroepitaxy", Applied physics express, vol. 3, no. 1: IOP Publishing, pp. 011004, 2010.
Law, JJM., ET. Yu, G. Koblmüller, F. Wu, and JS. Speck, "Low defect-mediated reverse-bias leakage in (0001) GaN via high-temperature molecular beam epitaxy", Applied Physics Letters, vol. 96, no. 10: AIP, pp. 102111, 2010.
Matioli, E., B. Fleury, E. Rangel, E. Hu, J. Speck, and C. Weisbuch, "Measurement of extraction and absorption parameters in GaN-based photonic-crystal light-emitting diodes", Journal of applied physics, vol. 107, no. 5: AIP, pp. 053114, 2010.
Wong, M. Hoi, Y. Pei, D. Brown, J. S. Speck, U. K. Mishra, M. L. Schuette, H. Kim, V. Balasubramanian, and W. Lu, "N-face GaN-based microwave metal-insulator-semiconductor high electron mobility transistors by plasma-assisted molecular beam epitaxy", Proceedings of CS MANTECH Conference. Oregon, USA, pp. 189–192, 2010.
Metcalfe, G. D., H. Shen, M. Wraback, A. Hirai, G. Koblmüller, C. S. Gallinat, and J. S. Speck, "Nitride semiconductors as terahertz sources based on spontaneous and piezoelectric polarization", physica status solidi (c), vol. 7, no. 10: Wiley Online Library, pp. 2455–2458, 2010.
Mishra, U. K., M. Hoi Wong, S. Dasgupta, D. F. Brown, B. L. Swenson, S. Keller, J. S. Speck, and others, "N-polar GaN-based MIS-HEMTs for mixed signal applications", Microwave Symposium Digest (MTT), 2010 IEEE MTT-S International: IEEE, pp. 1130–1133, 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.

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