Publications

Found 44 results
Author Title Type [ Year(Asc)]
Filters: Author is Speck, James S and First Letter Of Title is D  [Clear All Filters]
2018
Farzana, E., E. Ahmadi, J. S. Speck, A. R. Arehart, and S. A. Ringel, "Deep level defects in Ge-doped (010) β-Ga2O3 layers grown by plasma-assisted molecular beam epitaxy", Journal of Applied Physics, vol. 123, no. 16: AIP Publishing, pp. 161410, 2018.
Alhassan, A. I., N. G. Young, R. M. Farrell, C. Pynn, F. Wu, A. Y. Alyamani, S. Nakamura, S. P. DenBaars, and J. S. Speck, "Development of high performance green c-plane III-nitride light-emitting diodes", Optics express, vol. 26, no. 5: Optical Society of America, pp. 5591–5601, 2018.
2017
Ahmadi, E., O. S. Koksaldi, X. Zheng, T. Mates, Y. Oshima, U. K. Mishra, and J. S. Speck, "Demonstration of β-(Al x Ga1- x) 2O3/β-Ga2O3 modulation doped field-effect transistors with Ge as dopant grown via plasma-assisted molecular beam epitaxy", Applied Physics Express, vol. 10, no. 7: IOP Publishing, pp. 071101, 2017.
Mensi, M., R. Ivanov, T. K. Uz?davinys, K. M. Kelchner, S. Nakamura, S. P. DenBaars, J. S. Speck, and S. Marcinkevic?ius, "Direct measurement of nanoscale lateral carrier diffusion: toward scanning diffusion microscopy", ACS Photonics: American Chemical Society, 2017.
2016
Yonkee, B. P., E. C. Young, C. Lee, J. T. Leonard, S. P. DenBaars, J. S. Speck, and S. Nakamura, "Demonstration of a III-nitride edge-emitting laser diode utilizing a GaN tunnel junction contact", Optics express, vol. 24, no. 7: Optical Society of America, pp. 7816–7822, 2016.
Kowsz, S. J., C. D. Pynn, F. Wu, R. M. Farrell, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Designing optically pumped InGaN quantum wells with long wavelength emission for a phosphor-free device with polarized white-light emission", Gallium Nitride Materials and Devices XI, vol. 9748: International Society for Optics and Photonics, pp. 97481Z, 2016.
Hwang, D., B. Yonkee, R. M. Farrell, S. Nakamura, J. S. Speck, and S. P. DenBaars, "Development of c-plane thin-film flip-chip LEDs fabricated by photoelectrochemical (PEC) liftoff", Compound Semiconductor Week (CSW)[Includes 28th International Conference on Indium Phosphide & Related Materials (IPRM) & 43rd International Symposium on Compound Semiconductors (ISCS), 2016: IEEE, pp. 1–1, 2016.
Lee, C., C. Zhang, D. L. Becerra, S. Lee, C. A. Forman, S. Ho Oh, R. M. Farrell, J. S. Speck, S. Nakamura, J. E. Bowers, et al., "Dynamic characteristics of 410 nm semipolar (20 2 1) iii-nitride laser diodes with a modulation bandwidth of over 5 ghz", Applied Physics Letters, vol. 109, no. 10: AIP Publishing, pp. 101104, 2016.
2015
Fireman, M. N., D. A. Browne, B. Mazumder, J. S. Speck, and U. K. Mishra, "Demonstration of isotype GaN/AlN/GaN heterobarrier diodes by NH3-molecular beam epitaxy", Applied Physics Letters, vol. 106, no. 20: AIP Publishing, pp. 202106, 2015.
Yeluri, R., J. Lu, C. A. Hurni, D. A. Browne, S. Chowdhury, S. Keller, J. S. Speck, and U. K. Mishra, "Design, fabrication, and performance analysis of GaN vertical electron transistors with a buried p/n junction", Applied Physics Letters, vol. 106, no. 18: AIP Publishing, pp. 183502, 2015.
2014
Piccardo, M., L. Martinelli, J. Iveland, N. Young, S. P. DenBaars, S. Nakamura, J. S. Speck, C. Weisbuch, and J. Peretti, "Determination of the first satellite valley energy in the conduction band of wurtzite GaN by near-band-gap photoemission spectroscopy", Physical Review B, vol. 89, no. 23: APS, pp. 235124, 2014.
Zhang, Z., C. M. Jackson, A. R. Arehart, B. McSkimming, J. S. Speck, and S. A. Ringel, "Direct Determination of Energy Band Alignments of Ni/Al 2 O 3/GaN MOS Structures Using Internal Photoemission Spectroscopy", Journal of electronic materials, vol. 43, no. 4: Springer US, pp. 828–832, 2014.
Craven, M. D., S. P. DenBaars, J. S. Speck, and S. Nakamura, Dislocation reduction in non-polar III-nitride thin films, 2014.
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.
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.
Iveland, J., L. Martinelli, J. Peretti, J. S. Speck, and C. Weisbuch, "Direct measurement of Auger electrons emitted from a semiconductor light-emitting diode under electrical injection: identification of the dominant mechanism for efficiency droop", Physical review letters, vol. 110, no. 17: American Physical Society, pp. 177406, 2013.
Schaake, C. A., D. F. Brown, B. L. Swenson, S. Keller, J. S. Speck, and U. K. Mishra, "A donor-like trap at the InGaN/GaN interface with net negative polarization and its possible consequence on internal quantum efficiency", Semiconductor Science and Technology, vol. 28, no. 10: IOP Publishing, pp. 105021, 2013.
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.

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