Publications

Found 673 results
Author Title Type [ Year(Desc)]
Filters: Author is Speck, James S  [Clear All Filters]
2015
Hsu, P. Shan, K. M. Kelchner, R. M. Farrell, D. A. Haeger, H. Ohta, A. Tyagi, S. Nakamura, S. P. DenBaars, and J. S. Speck, Semi-polar iii-nitride optoelectronic devices on m-plane substrates with miscuts less than+/-15 degrees in the c-direction, 2015.
Ohta, H., F. Wu, A. Tyagi, A. Chakraborty, J. S. Speck, S. P. DenBaars, S. Nakamura, and E. C. Young, Semipolar or nonpolar nitride-based devices on partially or fully relaxed alloys with misfit dislocations at the heterointerface, 2015.
Marcinkevičius, S., K. Gelžinyt\.e, R. Ivanov, Y. Zhao, S. Nakamura, S. P. DenBaars, and J. S. Speck, "Spatial variations of optical properties of semipolar InGaN quantum wells", Gallium Nitride Materials and Devices X, vol. 9363: International Society for Optics and Photonics, pp. 93631U, 2015.
Speck, J. S., "Special Issue: Nitride Semiconductors", Phys. Status Solidi A, vol. 212, no. 5: Wiley Online Library, pp. 885–891, 2015.
Holder, C. O., D. F. Feezell, S. P. DenBaars, J. S. Speck, and S. Nakamura, Structure and method for the fabrication of a gallium nitride vertical cavity surface emitting laser, sep # " 15", 2015.
Wu, Y-R., C-K. Wu, C-K. Li, D. A. Browne, and J. S. Speck, "Study of percolation transport in the InGaN/AlGaN LEDs with random alloy fluctuation", Conference on Lasers and Electro-Optics/Pacific Rim: Optical Society of America, pp. 25H2_2, 2015.
Xue, J., Y. Zhao, S-H. Oh, W. F. Herrington, J. S. Speck, S. P. DenBaars, S. Nakamura, and R. J. Ram, "Thermally enhanced blue light-emitting diode", Applied Physics Letters, vol. 107, no. 12: AIP Publishing, pp. 121109, 2015.
Young, E. C., B. P. Yonkee, F. Wu, B. K. Saifaddin, D. A. Cohen, S. P. DenBaars, S. Nakamura, and J. S. Speck, "Ultraviolet light emitting diodes by ammonia molecular beam epitaxy on metamorphic () AlGaN/GaN buffer layers", Journal of Crystal Growth, vol. 425: North-Holland, pp. 389–392, 2015.
Young, E. C., B. P. Yonkee, F. Wu, B. K. Saifaddin, D. A. Cohen, S. P. DenBaars, S. Nakamura, and J. S. Speck, "Ultraviolet light emitting diodes by ammonia molecular beam epitaxy on metamorphic (202¯ 1) AlGaN/GaN buffer layers", Journal of Crystal Growth: Elsevier BV, 2015.
Kaun, S. W., F. Wu, J. S. Speck, and others, "β-(Al ${$sub x$}$ Ga ${$sub 1- x$}$)${$sub 2$}$ O ${$sub 3$}$/Ga ${$sub 2$}$ O ${$sub 3$}$(010) heterostructures grown on β-Ga ${$sub 2$}$ O ${$sub 3$}$(010) substrates by plasma-assisted molecular beam epitaxy", Journal of Vacuum Science and Technology. A, Vacuum, Surfaces and Films, vol. 33, no. 4, 2015.
Kaun, S. W., F. Wu, and J. S. Speck, "β-(AlxGa1- x) 2O3/Ga2O3 (010) heterostructures grown on β-Ga2O3 (010) substrates by plasma-assisted molecular beam epitaxy", Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, vol. 33, no. 4: AVS, pp. 041508, 2015.
2016
Malkowski, T. F., S. Pimputkar, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Acidic ammonothermal growth of gallium nitride in a liner-free molybdenum alloy autoclave", Journal of Crystal Growth, vol. 456: North-Holland, pp. 21–26, 2016.
Hogan, J. E., S. W. Kaun, E. Ahmadi, Y. Oshima, and J. S. Speck, "Chlorine-based dry etching of β-Ga2O3", Semiconductor Science and Technology, vol. 31, no. 6: IOP Publishing, pp. 065006, 2016.
Oshima, Y., E. Ahmadi, S. C. Badescu, F. Wu, and J. S. Speck, "Composition determination of β-(Al x Ga1- x) 2O3 layers coherently grown on (010) β-Ga2O3 substrates by high-resolution X-ray diffraction", Applied Physics Express, vol. 9, no. 6: IOP Publishing, pp. 061102, 2016.
Foronda, H. M., A. E. Romanov, E. C. Young, C. A. Robertson, G. E. Beltz, and J. S. Speck, "Curvature and bow of bulk GaN substrates", Journal of Applied Physics, vol. 120, no. 3: AIP Publishing, pp. 035104, 2016.
Foronda, H. Miguel, A. E. Romanov, E. C. Young, C. A. Robertson, G. E. Beltz, and J. S. Speck, "Curvature of HVPE c-plane grown GaN wafers in the relation to stress gradients caused by inclined threading dislocations", 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.
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.
Tsai, M-Y., O. Bierwagen, and J. S. Speck, "Epitaxial Sb-doped SnO2 and Sn-doped In2O3 transparent conducting oxide contacts on GaN-based light emitting diodes", Thin Solid Films, vol. 605: Elsevier, pp. 186–192, 2016.
Feneberg, M., J. Nixdorf, C. Lidig, R. Goldhahn, Z. Galazka, O. Bierwagen, and J. S. Speck, "Erratum: Many-electron effects on the dielectric function of cubic In 2 O 3: Effective electron mass, band nonparabolicity, band gap renormalization, and Burstein-Moss shift [Phys. Rev. B 93, 045203 (2016)]", Physical Review B, vol. 94, no. 23: American Physical Society, pp. 239905, 2016.
Bierwagen, O., J. Rombach, and J. S. Speck, "Faceting control by the stoichiometry influence on the surface free energy of low-index bcc-In2O3 surfaces", Journal of Physics: Condensed Matter, vol. 28, no. 22: IOP Publishing, pp. 224006, 2016.
Dreyer, C. E., A. Alkauskas, J. L. Lyons, J. S. Speck, and C. G. Van de Walle, "Gallium vacancy complexes as a cause of Shockley-Read-Hall recombination in III-nitride light emitters", Applied Physics Letters, vol. 108, no. 14: AIP Publishing, pp. 141101, 2016.
Shen, C., J. T. Leonard, E. C. Young, T. Khee Ng, S. P. DenBaars, J. S. Speck, S. Nakamura, A. Y. Alyamani, M. M. El-Desouki, and B. S. Ooi, "GHz modulation bandwidth from single-longitudinal mode violet-blue VCSEL using nonpolar InGaN/GaN QWs", CLEO: Science and Innovations: Optical Society of America, pp. STh1L–2, 2016.

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