Publications

Found 112 results
Author Title Type [ Year(Desc)]
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2009
Bierwagen, O., T. Nagata, T. Ive, CG. Van de Walle, and JS. Speck, "Dissipation-factor-based criterion for the validity of carrier-type identification by capacitance-voltage measurements", Applied Physics Letters, vol. 94, no. 15: AIP, pp. 152110, 2009.
2011
Zhang, Z., C. Hurni, A. Arehart, J. Speck, and S. Ringel, "Deep Traps in M-Plane GaN Grown by Ammonia MBE", 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.
Imer, B. M., J. S. Speck, and S. P. DenBaars, Defect reduction of non-polar and semi-polar III-nitrides with sidewall lateral epitaxial overgrowth (SLEO), 2011.
Huang, C-Y., M. T. Hardy, K. Fujito, D. F. Feezell, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Demonstration of 505 nm laser diodes using wavelength-stable semipolar (20 21) InGaN/GaN quantum wells", Applied Physics Letters, vol. 99, no. 24: AIP, pp. 241115, 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.
Young, E. C., A. E. Romanov, and J. S. Speck, "Determination of Composition and Lattice Relaxation in Semipolar Ternary (In, Al, Ga) N Strained Layers from Symmetric X-ray Diffraction Measurements", Applied physics express, vol. 4, no. 6: IOP Publishing, pp. 061001, 2011.
Farrell, RM., DA. Haeger, PS. Hsu, K. Fujito, DF. Feezell, SP. DenBaars, JS. Speck, and S. Nakamura, "Determination of internal parameters for AlGaN-cladding-free m-plane InGaN/GaN laser diodes", Applied Physics Letters, vol. 99, no. 17: AIP, pp. 171115, 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.
Rangel, E., E. Matioli, Y-S. Choi, C. Weisbuch, J. S. Speck, and E. L. Hu, "Directionality control through selective excitation of low-order guided modes in thin-film InGaN photonic crystal light-emitting diodes", Applied physics letters, vol. 98, no. 8: AIP, pp. 081104, 2011.
2012
Zhang, Z., CA. Hurni, AR. Arehart, J. Yang, RC. Myers, JS. Speck, and SA. Ringel, "Deep traps in nonpolar m-plane GaN grown by ammonia-based molecular beam epitaxy", Applied Physics Letters, vol. 100, no. 5: AIP, pp. 052114, 2012.
Hardy, M. T., P. Shan Hsu, I. L. Koslow, D. Feezell, S. Nakamura, J. S. Speck, and S. DenBaars, "Demonstration of a Relaxed Waveguide Semipolar (202Ø1) InGaN/GaN Laser Diode", CLEO: Science and Innovations: Optical Society of America, pp. CTu2N–2, 2012.
Hardy, M. T., P. S. Hsu, I. Koslow, D. F. Feezell, S. Nakamura, J. S. Speck, and S. P. DenBaars, "Demonstration of a relaxed waveguide semipolar InGaN/GaN laser diode", Lasers and Electro-Optics (CLEO), 2012 Conference on: IEEE, pp. 1–2, 2012.
Yeluri, R., C. A. Hurni, S. Chowdhury, J. S. Speck, and U. K. Mishra, "Demonstration of Low ON-Resistance CAVETS with Ammonia MBE Grown Active p-GaN Layer as the Current Blocking Layer for High Power Applications", Meeting Abstracts, no. 30: The Electrochemical Society, pp. 2531–2531, 2012.
Holder, C., J. S. Speck, S. P. DenBaars, S. Nakamura, and D. Feezell, "Demonstration of nonpolar GaN-based vertical-cavity surface-emitting lasers", Applied Physics Express, vol. 5, no. 9: IOP Publishing, pp. 092104, 2012.
Toledo, N. G., D. J. Friedman, R. M. Farrell, E. E. Perl, C-T. Lin, J. E. Bowers, J. S. Speck, and U. K. Mishra, "Design of integrated III-nitride/non-III-nitride tandem photovoltaic devices", Journal of Applied Physics, vol. 111, no. 5: AIP, pp. 054503, 2012.
Sasikumar, A., A. Arehart, SA. Ringel, S. Kaun, MH. Wong, UK. Mishra, and JS. Speck, "Direct correlation between specific trap formation and electric stress-induced degradation in MBE-grown AlGaN/GaN HEMTs", Reliability Physics Symposium (IRPS), 2012 IEEE International: IEEE, pp. 2C–3, 2012.
Craven, M. D., S. P. DenBaars, J. S. Speck, and S. Nakamura, Dislocation reduction in non-polar iii-nitride thin films, 2012.
Jewell, J., D. Simeonov, S-C. Huang, Y-L. Hu, S. Nakamura, J. Speck, and C. Weisbuch, "Double embedded photonic crystals for extraction of guided light in light-emitting diodes", Applied Physics Letters, vol. 100, no. 17: AIP, pp. 171105, 2012.
2013
Holder, C., D. Feezell, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Demonstration of nonpolar GaN-based vertical-cavity surface-emitting lasers", Vertical-Cavity Surface-Emitting Lasers XVII, vol. 8639: International Society for Optics and Photonics, pp. 863906, 2013.
Hardy, M., C. O. Holder, S. Nakamura, J. S. Speck, D. A. Cohen, and S. P. DenBaars, "Demonstration of True Green ITO Clad Semipolar (202Ø1) InGaN/GaN Laser Diodes", CLEO: Science and Innovations: Optical Society of America, pp. CF1F–1, 2013.
Hardy, M. T., C. O. Holder, S. Nakamura, J. S. Speck, D. A. Cohen, and S. P. DenBaars, "Demonstration of true green ITO clad semipolar InGaN/GaN laser diodes", Lasers and Electro-Optics (CLEO), 2013 Conference on: IEEE, pp. 1–2, 2013.
Kawaguchi, Y., S-C. Huang, R. M. Farrell, Y. Zhao, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Dependence of electron overflow on emission wavelength and crystallographic orientation in single-quantum-well III–nitride light-emitting diodes", Applied Physics Express, vol. 6, no. 5: IOP Publishing, pp. 052103, 2013.
DenBaars, S. P., D. Feezell, K. Kelchner, S. Pimputkar, C-C. Pan, C-C. Yen, S. Tanaka, Y. Zhao, N. Pfaff, R. Farrell, et al., "Development of gallium-nitride-based light-emitting diodes (LEDs) and laser diodes for energy-efficient lighting and displays", Acta Materialia, vol. 61, no. 3: Pergamon, pp. 945–951, 2013.
Farell, R. M., E. C. Young, F. Wu, S. Nakamura, S. P. DenBaars, and J. S. Speck, "Development of high-performance nonpolar III-nitride light-emitting devices", Electronics, Communications and Photonics Conference (SIECPC), 2013 Saudi International: IEEE, pp. 1–8, 2013.

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