Publications

Found 60 results
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2010
Raethel, J., P. Schley, E. Sakalauskas, G. Gobsch, R. Mueller, T. A. Klar, J. Pezoldt, R. Goldhahn, G. Koblmueller, J. S. Speck, et al., "Optical anisotropy of a-and m-plane InN grown on free-standing GaN substrates", Verhandlungen der Deutschen Physikalischen Gesellschaft, 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.
Huang, C-Y., Y-. Da Lin, A. Tyagi, A. Chakraborty, H. Ohta, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Optical waveguide simulations for the optimization of InGaN-based green laser diodes", Journal of Applied Physics, vol. 107, no. 2: AIP, pp. 023101, 2010.
Farrell, R. M., M. C. Schmidt, K-C. Kim, H. Masui, D. F. Feezell, J. S. Speck, S. P. DenBaars, and S. Nakamura, Optimization of laser bar orientation for nonpolar and semipolar (Ga, Al, In, B) N diode lasers, 2010.
Farrell, RM., DA. Haeger, X. Chen, CS. Gallinat, RW. Davis, M. Cornish, K. Fujito, S. Keller, SP. DenBaars, S. Nakamura, et al., "Origin of pyramidal hillocks on GaN thin films grown on free-standing m-plane GaN substrates", Applied Physics Letters, vol. 96, no. 23: AIP, pp. 231907, 2010.
2009
Xu, G., Y. J. Ding, I. B. Zotova, C. E. Stutz, D. E. Diggs, N. Fernelius, F. K. Hopkins, C. S. Gallinat, G. Koblmüller, and J. S. Speck, "Observation of clamping of photoluminescence intensities from nonlinear degenerate electron gas in InN", International Quantum Electronics Conference: Optical Society of America, pp. IMH6, 2009.
2008
Masui, H., H. Yamada, K. Iso, H. Hirasawa, N. N. Fellows, J. S. Speck, S. Nakamura, and S. P. DenBaars, "Optical polarization of m-plane In-GaN/GaN light-emitting diodes characterized via confocal microscope", physica status solidi (a), vol. 205, no. 5: Wiley Online Library, pp. 1203–1206, 2008.
Sato, H., R. B. Chung, H. Hirasawa, N. Fellows, H. Masui, F. Wu, M. Saito, K. Fujito, J. S. Speck, S. P. DenBaars, et al., "Optical properties of yellow light-emitting diodes grown on semipolar (11 2 2) bulk GaN substrates", Applied Physics Letters, vol. 92, no. 22: AIP, pp. 221110, 2008.
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.
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.
Ghosh, S., P. Misra, H. T. Grahn, B. Imer, S. Nakamura, S. P. DenBaars, and J. S. Speck, "Optical polarization anisotropy in strained A-plane GaN films on R-plane sapphire", physica status solidi (b), vol. 243, no. 7: Wiley Online Library, pp. 1441–1445, 2006.
Brown, J. S., P. M. Petroff, F. Wu, and J. S. Speck, "Optical properties of GaN/AlN (0001) quantum dots grown by plasma-assisted molecular beam epitaxy", Japanese journal of applied physics, vol. 45, no. 7L: IOP Publishing, pp. L669, 2006.
Paskov, PP., T. Paskova, B. Monemar, S. Figge, D. Hommel, BA. Haskell, PT. Fini, JS. Speck, and S. Nakamura, "Optical properties of nonpolar a-plane GaN layers", Superlattices and Microstructures, vol. 40, no. 4-6: Academic Press, pp. 253–261, 2006.
Koblmüller, G., CS. Gallinat, S. Bernardis, JS. Speck, GD. Chern, ED. Readinger, H. Shen, and M. Wraback, "Optimization of the surface and structural quality of N-face InN grown by molecular beam epitaxy", Applied physics letters, vol. 89, no. 7: AIP, pp. 071902, 2006.
Chichibu, S. F., A. Uedono, T. Onuma, B. A. Haskell, A. Chakraborty, T. Koyama, P. T. Fini, S. Keller, S. P. DenBaars, J. S. Speck, et al., "Origin of defect-insensitive emission probability in In-containing (Al, In, Ga) N alloy semiconductors", Nature materials, vol. 5, no. 10: Nature Publishing Group, pp. 810, 2006.
2005
Akopian, N., G. Bahir, D. Gershoni, MD. Craven, JS. Speck, and SP. DenBaars, "Optical evidence for lack of polarization in (11 2\= 0) oriented GaN/(AlGa) N quantum structures", Applied Physics Letters, vol. 86, no. 20: AIP, pp. 202104, 2005.
2004
Speck, J. S., and P. M. Petroff, Order Lattices of Quantum Dots: DTIC Document, 2004.
2003
Pervez, NK., PJ. Hansen, TR. Taylor, JS. Speck, and RA. York, "Observation of long transients in the electrical characterization of thin film BST capacitors", Integrated Ferroelectrics, vol. 53, no. 1: Taylor & Francis, pp. 503–511, 2003.
Miller, EJ., DM. Schaadt, ET. Yu, XL. Sun, LJ. Brillson, P. Waltereit, and JS. Speck, "Origin and microscopic mechanism for suppression of leakage currents in Schottky contacts to GaN grown by molecular-beam epitaxy", Journal of applied physics, vol. 94, no. 12: AIP, pp. 7611–7615, 2003.
2001
Katona, TM., MD. Craven, PT. Fini, JS. Speck, and SP. DenBaars, "Observation of crystallographic wing tilt in cantilever epitaxy of GaN on silicon carbide and silicon (111) substrates", Applied Physics Letters, vol. 79, no. 18: AIP, pp. 2907–2909, 2001.
Hansen, M., LF. Chen, JS. Speck, and SP. DenBaars, "Observation of Mg-Rich Precipitates in the p-Type Doping of GaN-Based Laser Diodes", physica status solidi (b), vol. 228, no. 2: WILEY-VCH Verlag Berlin GmbH Berlin, pp. 353–356, 2001.
2000
Hierro, A., D. Kwon, SA. Ringel, M. Hansen, JS. Speck, UK. Mishra, and SP. DenBaars, "Optically and thermally detected deep levels in n-type Schottky and p+-n GaN diodes", Applied Physics Letters, vol. 76, no. 21: AIP, pp. 3064–3066, 2000.
Heying, B., C. POBLENZ, C. ELSASS, P. Fini, S. DenBaars, J. Speck, Y. Smorchkova, and U. Mishra, "Optimization of the Electron Mobilites in GaN Grown by Plasma-assisted Molecular Beam Epitaxy", Proc. Int. Workshop on Nitride Semiconductors, IPAP Conf. Series, 2000.
Heying, B., I. Smorchkova, C. Poblenz, C. Elsass, P. Fini, D. S Baars, U. Mishra, and JS. Speck, "Optimization of the surface morphologies and electron mobilities in GaN grown by plasma-assisted molecular beam epitaxy", Applied Physics Letters, vol. 77, no. 18: AIP, pp. 2885–2887, 2000.
1999
Stephenson, GB., JA. Eastman, C. Thompson, O. Auciello, LJ. Thompson, A. Munkholm, P. Fini, SP. DenBaars, and JS. Speck, "Observation of growth modes during metal-organic chemical vapor deposition of GaN", Applied physics letters, vol. 74, no. 22: AIP, pp. 3326–3328, 1999.

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