Publications

Found 110 results
Author Title Type [ Year(Desc)]
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2015
Papadogianni, A., M. E. White, J. S. Speck, Z. Galazka, and O. Bierwagen, "Hall and Seebeck measurements estimate the thickness of a (buried) carrier system: Identifying interface electrons in In-doped SnO2 films", Applied Physics Letters, vol. 107, no. 25: AIP Publishing, pp. 252105, 2015.
McSkimming, B. M., C. Chaix, and J. S. Speck, "High active nitrogen flux growth of GaN by plasma assisted molecular beam epitaxy", Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, vol. 33, no. 5: AVS, pp. 05E128, 2015.
Zhong, H., A. Tyagi, K. J. Vampola, J. S. Speck, S. P. DenBaars, and S. Nakamura, High light extraction efficiency nitride based light emitting diode by surface roughening, 2015.
Gelžinyt\.e, K., R. Ivanov, S. Marcinkevičius, Y. Zhao, DL. Becerra, S. Nakamura, SP. DenBaars, and JS. Speck, "High spatial uniformity of photoluminescence spectra in semipolar (20 2 1) plane InGaN/GaN quantum wells", Journal of Applied Physics, vol. 117, no. 2: AIP Publishing, pp. 023111, 2015.
Pourhashemi, A., RM. Farrell, DA. Cohen, JS. Speck, SP. DenBaars, and S. Nakamura, "High-power blue laser diodes with indium tin oxide cladding on semipolar (20 2 1) GaN substrates", Applied Physics Letters, vol. 106, no. 11: AIP Publishing, pp. 111105, 2015.
2016
Shen, C., C. Lee, T. Khee Ng, S. Nakamura, J. S. Speck, S. P. DenBaars, A. Y. Alyamani, M. M. El-Desouki, and B. S. Ooi, "High gain semiconductor optical amplifieróLaser diode at visible wavelength", Electron Devices Meeting (IEDM), 2016 IEEE International: IEEE, pp. 22–4, 2016.
Kyle, E. C. H., S. W. Kaun, F. Wu, B. Bonef, and J. S. Speck, "High indium content homogenous InAlN layers grown by plasma-assisted molecular beam epitaxy", Journal of Crystal Growth, vol. 454: North-Holland, pp. 164–172, 2016.
Alhassan, A. I., R. M. Farrell, B. Saifaddin, A. Mughal, F. Wu, S. P. DenBaars, S. Nakamura, and J. S. Speck, "High luminous efficacy green light-emitting diodes with AlGaN cap layer", Optics express, vol. 24, no. 16: Optical Society of America, pp. 17868–17873, 2016.
Cantore, M., N. Pfaff, R. M. Farrell, J. S. Speck, S. Nakamura, and S. P. DenBaars, "High luminous flux from single crystal phosphor-converted laser-based white lighting system", Optics Express, vol. 24, no. 2: Optical Society of America, pp. A215–A221, 2016.
Pourhashemi, A., R. M. Farrell, S. P. DenBaars, J. S. Speck, and S. Nakamura, High power blue-violet III-nitride semipolar laser diodes, may # " 31", 2016.
Lee, C., C. Zhang, D. Becerra, S. Lee, S. Ho Oh, R. M. Farrell, J. S. Speck, S. Nakamura, J. E. Bowers, and S. P. DenBaars, "High speed performance of III-nitride laser diode grown on (2021) semipolar plane for visible light communication", Photonics Conference (IPC), 2016 IEEE: IEEE, pp. 809–810, 2016.
Shen, C., T. Khee Ng, J. T. Leonard, A. Pourhashemi, S. Nakamura, S. P. DenBaars, J. S. Speck, A. Y. Alyamani, M. M. El-Desouki, and B. S. Ooi, "High-brightness semipolar (2021) blue InGaN/GaN superluminescent diodes for droop-free solid-state lighting and visible-light communications", Optics letters, vol. 41, no. 11: Optical Society of America, pp. 2608–2611, 2016.
Chen, J., Y. S. Puzyrev, E. Xia Zhang, D. M. Fleetwood, R. D. Schrimpf, A. R. Arehart, S. A. Ringel, S. W. Kaun, E. C. H. Kyle, J. S. Speck, et al., "High-field stress, low-frequency noise, and long-term reliability of AlGaN/GaN HEMTs", IEEE Transactions on Device and Materials Reliability, vol. 16, no. 3: IEEE, pp. 282–289, 2016.
Shen, C., T. Khee Ng, J. T. Leonard, A. Pourhashemi, H. M. Oubei, M. S. Alias, S. Nakamura, S. P. DenBaars, J. S. Speck, A. Y. Alyamani, et al., "High-modulation-efficiency, integrated waveguide modulator–laser diode at 448 nm", Acs Photonics, vol. 3, no. 2: American Chemical Society, pp. 262–268, 2016.
Mughal, AJ., S. Oh, A. Myzaferi, S. Nakamura, JS. Speck, and SP. DenBaars, "High-power LEDs using Ga-doped ZnO current-spreading layers", Electronics Letters, vol. 52, no. 4: IET Digital Library, pp. 304–306, 2016.
Shen, C., C. Lee, T. Khee Ng, S. Nakamura, J. S. Speck, S. P. DenBaars, A. Y. Alyamani, M. M. El-Desouki, and B. S. Ooi, "High-speed 405-nm superluminescent diode (SLD) with 807-MHz modulation bandwidth", Optics express, vol. 24, no. 18: Optical Society of America, pp. 20281–20286, 2016.
Lee, C., C. Zhang, D. L. Becerra, S. Lee, R. M. Farrell, J. S. Speck, S. Nakamura, J. E. Bowers, and S. P. DenBaars, "High-speed performance of III-nitride 410 nm ridge laser diode on (202Ø1Ø) plane for visible light communication", Compound Semiconductor Week (CSW)[Includes 28th International Conference on Indium Phosphide & Related Materials (IPRM) & 43rd International Symposium on Compound Semiconductors (ISCS), 2016: IEEE, pp. 1–2, 2016.
Yonkee, B. P., E. C. Young, J. T. Leonard, C. Lee, S. Ho Oh, S. P. DenBaars, J. S. Speck, and S. Nakamura, "Hybrid MOCVD/MBE GaN tunnel junction LEDs with greater than 70% wall plug efficiency", 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.
Young, E. C., B. P. Yonkee, F. Wu, S. Ho Oh, S. P. DenBaars, S. Nakamura, and J. S. Speck, "Hybrid tunnel junction contacts to III–nitride light-emitting diodes", Applied Physics Express, vol. 9, no. 2: IOP Publishing, pp. 022102, 2016.
2017
Yonkee, B. P., E. C. Young, S. P. DenBaars, J. S. Speck, and S. Nakamura, "High reflectivity Ohmic contacts to n-GaN utilizing vacuum annealed aluminum", Semiconductor Science and Technology, vol. 33, no. 1: IOP Publishing, pp. 015015, 2017.
Kuritzky, L. Y., A. C. Espenlaub, B. P. Yonkee, C. D. Pynn, S. P. DenBaars, S. Nakamura, C. Weisbuch, and J. S. Speck, "High wall-plug efficiency blue III-nitride LEDs designed for low current density operation", Optics express, vol. 25, no. 24: Optical Society of America, pp. 30696–30707, 2017.
2018
Kimmel, A.-C.L., T. F. Malkowski, S. Griffiths, B. Hertweck, T. G. Steigerwald, L. P. Freund, S. Neumeier, M. Göken, J. S. Speck, and E. Schluecker, "High-temperature corrosion of Inconel®Alloy 718, Haynes®282®Alloy and CoWAlloy1&2 in supercritical ammonia/ammonium chloride solution", Journal of Crystal Growth, vol. 498, pp. 289 - 300, 2018.
2019
Fireman, M. N., G. L'Heureux, F. Wu, T. Mates, E. C. Young, and J. S. Speck, "High germanium doping of GaN films by ammonia molecular beam epitaxy", Journal of Crystal Growth, vol. 508, pp. 19 - 23, 2019.
Wang, J., E. Young, B. SaifAddin, C. Zollner, A. Almogbel, M. Fireman, M. Izza, S. Nakamura, S. Denbaars, and J. Speck, "Hybrid III-Nitride Tunnel Junctions for Low Excess Voltage Blue LEDs and UVC LEDs", 2019 Compound Semiconductor Week (CSW), May, 2019.
2020
Alema, F., Y. Zhang, A. Mauze, T. Itoh, J. S. Speck, B. Hertog, and A. Osinsky, "H2O vapor assisted growth of β-Ga2O3 by MOCVD", AIP Advances, vol. 10, pp. 085002, 2020.

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