Publications

Found 673 results
Author Title Type [ Year(Desc)]
Filters: Author is Speck, James S  [Clear All Filters]
2011
Gao, F., B. Lu, L. Li, S. Kaun, J. S. Speck, C. V. Thompson, and T. Palacios, "Role of oxygen in the OFF-state degradation of AlGaN/GaN high electron mobility transistors", Applied Physics Letters, vol. 99, no. 22: AIP, pp. 223506, 2011.
Dasgupta, S., D. F. Brown, U. Singisetti, S. Keller, J. S. Speck, U. K. Mishra, and others, "Self-aligned technology for N-polar GaN/Al (Ga) N MIS-HEMTs", IEEE Electron Device Letters, vol. 32, no. 1: IEEE, pp. 33–35, 2011.
Young, E. C., A. E. Romanov, and J. S. Speck, "Semiconductors, dielectrics, and organic materials-061001 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, 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., E. C. Young, D. A. Haeger, S. P. DenBaars, J. S. Speck, and D. A. Cohen, "Semipolar AlN on bulk GaN for UV-C diode lasers", Quantum Electronics and Laser Science Conference: Optical Society of America, pp. JTuB2, 2011.
Tyagi, A., R. M. Farrell, C-Y. Huang, P. Shan Hsu, D. A. Haeger, K. M. Kelchner, H. Ohta, S. Nakamura, S. P. DenBaars, and J. S. Speck, Semipolar iii-nitride laser diodes with etched mirrors, 2011.
Farrell, R. M., D. A. Haeger, P. Shan Hsu, U. K. Mishra, S. P. DenBaars, J. S. Speck, and S. Nakamura, STRUCTURE AND METHOD FOR ACHIEVING SELECTIVE ETCHING IN (Ga, Al, In, B) N LASER DIODES, 2011.
Farrell, R. M., M. T. Hardy, H. Ohta, S. P. DenBaars, J. S. Speck, and S. Nakamura, Structure for Improving the Mirror Facet Cleaving Yield of (Ga, Al, In, B) N Laser Diodes Grown on Nonpolar or Semipolar (Ga, Al, In, B) N Substrates, 2011.
Hardy, M. T., Y-. Da Lin, H. Ohta, S. P. DenBaars, J. S. Speck, S. Nakamura, and K. M. Kelchner, Superluminescent diodes by crystallographic etching, 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.
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.
2012
Haeger, D. A., E. C. Young, R. B. Chung, F. Wu, N. A. Pfaff, M. Tsai, K. Fujito, S. P. DenBaars, J. S. Speck, S. Nakamura, et al., "384 nm laser diode grown on a (20 2\= 1) semipolar relaxed AlGaN buffer layer", Applied Physics Letters, vol. 100, no. 16: AIP, pp. 161107, 2012.
Haeger, D., E. Young, R. Chung, F. Wu, S. Nakamura, S. DenBaars, J. S. Speck, A. Romanov, and D. A. Cohen, "384nm AlGaN Diode Lasers on Relaxed Semipolar Buffers", CLEO: Science and Innovations: Optical Society of America, pp. CTu2N–4, 2012.
Hsu, P. Shan, M. T. Hardy, F. Wu, I. Koslow, E. C. Young, A. E. Romanov, K. Fujito, D. F. Feezell, S. P. DenBaars, J. S. Speck, et al., "444.9 nm semipolar (11 2\= 2) laser diode grown on an intentionally stress relaxed InGaN waveguiding layer", Applied Physics Letters, vol. 100, no. 2: AIP, pp. 021104, 2012.
Feezell, D. F., M. C. Schmidt, K-C. Kim, R. M. Farrell, D. A. Cohen, J. S. Speck, S. P. DenBaars, and S. Nakamura, Al (x) Ga (1-x) N-cladding-free nonpolar III-nitride based laser diodes and light emitting diodes, 2012.
Raman, A., C. A. Hurni, J. S. Speck, and U. K. Mishra, "AlGaN/GaN heterojunction bipolar transistors by ammonia molecular beam epitaxy", physica status solidi (a), vol. 209, no. 1: Wiley Online Library, pp. 216–220, 2012.
Wu, Y-R., R. Shivaraman, K-C. Wang, and J. S. Speck, "Analyzing the physical properties of InGaN multiple quantum well light emitting diodes from nano scale structure", Applied Physics Letters, vol. 101, no. 8: AIP, pp. 083505, 2012.
Wong, M. Hoi, U. Singisetti, J. Lu, J. S. Speck, and U. K. Mishra, "Anomalous output conductance in N-polar GaN high electron mobility transistors", IEEE Transactions on Electron Devices, vol. 59, no. 11: IEEE, pp. 2988–2995, 2012.
Hu, Y-L., S. Krämer, P. T. Fini, and J. S. Speck, "Atomic structure of prismatic stacking faults in nonpolar a-plane GaN epitaxial layers", Applied Physics Letters, vol. 101, no. 11: AIP, pp. 112102, 2012.
Hurni, C. A., H. Kroemer, U. K. Mishra, and J. S. Speck, "Capacitance-voltage profiling on polar III-nitride heterostructures", Journal of Applied Physics, vol. 112, no. 8: AIP, pp. 083704, 2012.
Garrett, G. A., P. Rotella, H. Shen, M. Wraback, D. A. Haeger, R. B. Chung, N. Pfaff, E. C. Young, S. P. DenBaars, J. S. Speck, et al., "Carrier dynamics in active regions for ultraviolet optoelectronics grown on thick, relaxed AlGaN on semipolar bulk GaN", physica status solidi (b), vol. 249, no. 3: Wiley Online Library, pp. 507–510, 2012.
Lu, J., Y-L. Hu, D. F. Brown, F. Wu, S. Keller, J. S. Speck, S. P. DenBaars, and U. K. Mishra, "Charge and Mobility Enhancements in In-Polar InAl (Ga) N/Al (Ga) N/GaN Heterojunctions Grown by Metal–Organic Chemical Vapor Deposition Using a Graded Growth Strategy", Japanese Journal of Applied Physics, vol. 51, no. 11R: IOP Publishing, pp. 115502, 2012.
Young, E. C., F. Wu, A. E. Romanov, D. A. Haeger, S. Nakamura, S. P. DenBaars, D. A. Cohen, and J. S. Speck, "Compositionally graded relaxed AlGaN buffers on semipolar GaN for mid-ultraviolet emission", Applied Physics Letters, vol. 101, no. 14: AIP, pp. 142109, 2012.
Kaun, S. W., M. Hoi Wong, U. K. Mishra, and J. S. Speck, "Correlation between threading dislocation density and sheet resistance of AlGaN/AlN/GaN heterostructures grown by plasma-assisted molecular beam epitaxy", Applied Physics Letters, vol. 100, no. 26: AIP, pp. 262102, 2012.
Hurni, C. A., S. Choi, O. Bierwagen, and J. S. Speck, "Coupling resistance between n-type surface accumulation layer and p-type bulk in InN: Mg thin films", Applied Physics Letters, vol. 100, no. 8: AIP, pp. 082106, 2012.

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