Publications

Found 388 results
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2017
Kelchner, K. M., J. S. Speck, N. A. Pfaff, and S. P. DenBaars, White light source employing a III-nitride based laser diode pumping a phosphor, 2017.
2016
Chen, J., YS. Puzyrev, EX. Zhang, DM. Fleetwood, RD. Schrimpf, AR. Arehart, SA. Ringel, SW. Kaun, ECH. Kyle, JS. Speck, et al., "Absil, P., see Karmarkar, AP, TDMR Sept. 2016 402-412 Ahmed, S., see Kuhns, N., TDMR June 2016 105-111 Akbari, M., Virkki, J., Sydanheimo, L., and Ukkonen, L., Toward Graphene-Based Passive UHF RFID Textile Tags: A Reliability Study; TDMR Sept. 2016 429-4", IEEE Transactions on Device and Materials Reliability, vol. 16, no. 4, pp. 1, 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.
Pimputkar, S., JS. Speck, and S. Nakamura, "Basic ammonothermal GaN growth in molybdenum capsules", Journal of Crystal Growth, vol. 456: North-Holland, pp. 15–20, 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.
Pynn, CD., SJ. Kowsz, SH. Oh, H. Gardner, RM. Farrell, S. Nakamura, JS. Speck, and SP. DenBaars, "Green semipolar III-nitride light-emitting diodes grown by limited area epitaxy", Applied Physics Letters, vol. 109, no. 4: AIP Publishing, pp. 041107, 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.
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.
Sintonen, S., P. Kivisaari, S. Pimputkar, S. Suihkonen, T. Schulz, J. S. Speck, and S. Nakamura, "Incorporation and effects of impurities in different growth zones within basic ammonothermal GaN", Journal of Crystal Growth, vol. 456: North-Holland, pp. 43–50, 2016.
Suihkonen, S., S. Pimputkar, J. S. Speck, and S. Nakamura, "Infrared absorption of hydrogen-related defects in ammonothermal GaN", Applied Physics Letters, vol. 108, no. 20: AIP Publishing, pp. 202105, 2016.
Eisele, H., J. Schuppang, M. Schnedler, M. Duchamp, C. Nenstiel, V. Portz, T. Kure, M. Bügler, A. Lenz, M. Dähne, et al., "Intrinsic electronic properties of high-quality wurtzite InN", Physical Review B, vol. 94, no. 24: American Physical Society, pp. 245201, 2016.
Becerra, D. L., L. Y. Kuritzky, J. Nedy, A. Saud Abbas, A. Pourhashemi, R. M. Farrell, D. A. Cohen, S. P. DenBaars, J. S. Speck, and S. Nakamura, "Measurement and analysis of internal loss and injection efficiency for continuous-wave blue semipolar (20 2\= 1\=) III-nitride laser diodes with chemically assisted ion beam etched facets", Applied Physics Letters, vol. 108, no. 9: AIP Publishing, pp. 091106, 2016.
Becerra, D., L. Kuritzky, J. Nedy, A. Abbas, A. Pourhashemi, R. Farrell, D. Cohen, S. DenBaars, J. Speck, and S. Nakamura, "Measurement of internal loss, injection efficiency, and gain for continuous-wave semipolar (202Ø1Ø) III-nitride laser diodes", 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.
Von Dollen, P., S. Pimputkar, M. Abo Alreesh, H. Albrithen, S. Suihkonen, S. Nakamura, and J. S. Speck, "A new system for sodium flux growth of bulk GaN. Part I: System development", Journal of Crystal Growth, vol. 456: North-Holland, pp. 58–66, 2016.
Von Dollen, P., S. Pimputkar, M. Abo Alreesh, S. Nakamura, and J. S. Speck, "A new system for sodium flux growth of bulk GaN. Part II: in situ investigation of growth processes", Journal of Crystal Growth, vol. 456: North-Holland, pp. 67–72, 2016.
Pimputkar, S., S. Nakamura, and J. S. Speck, Reactor vessels for ammonothermal and flux-based growth of group-iii nitride crystals, 2016.
Griffiths, S., S. Pimputkar, J. S. Speck, and S. Nakamura, "On the solubility of gallium nitride in supercritical ammonia–sodium solutions", Journal of Crystal Growth, vol. 456: North-Holland, pp. 5–14, 2016.
Pimputkar, S., T. F. Malkowski, S. Griffiths, A. Espenlaub, S. Suihkonen, J. S. Speck, and S. Nakamura, "Stability of materials in supercritical ammonia solutions", The Journal of Supercritical Fluids, vol. 110: Elsevier, pp. 193–229, 2016.
Kowsz, S., C. Pynn, R. Farrell, J. Speck, S. DenBaars, and S. Nakamura, "Tunnel junction devices with monolithic optically pumped and electrically injected InGaN quantum wells for polarized white light emission", 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.
2015
Pimputkar, S., J. S. Speck, S. Nakamura, and S-ichiro. Kawabata, Ammonothermal growth of group-III nitride crystals on seeds with at least two surfaces making an acute, right or obtuse angle with each other, 2015.
Korhonen, E., V. Prozheeva, F. Tuomisto, O. Bierwagen, JS. Speck, ME. White, Z. Galazka, H. Liu, N. Izyumskaya, V. Avrutin, et al., "Cation vacancies and electrical compensation in Sb-doped thin-film SnO2 and ZnO", Semiconductor Science and Technology, vol. 30, no. 2: IOP Publishing, pp. 024011, 2015.
Megalini, L., D. L. Becerra, R. M. Farrell, A. Pourhashemi, J. S. Speck, S. Nakamura, S. P. DenBaars, and D. A. Cohen, "Continuous-wave operation of a InGaN laser diode with a photoelectrochemically etched current aperture", Applied Physics Express, vol. 8, no. 4: IOP Publishing, pp. 042701, 2015.

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