Publications

Found 67 results
Author Title Type [ Year(Asc)]
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2024
Fornos, C., N. Alyabyeva, M. Sauty, W. Ying Ho, Y. Chao Chow, T. Tak, J. S. Speck, C. Weisbuch, Y. Lassailly, A. C. H. Rowe, et al., "Nanoscale mapping of inhomogeneities in the luminescence of operational nitride LEDs", Gallium Nitride Materials and Devices XIX, pp. PC1288608, 03/2024.
2023
Alema, F., T. Itoh, W. Brand, M. Tadjer, A. Osinsky, and J. S. Speck, "N2O grown high Al composition nitrogen doped Beta-(AlGa)2O3/Beta-Ga2O3 using MOCVD", Journal of Vacuum Science and Technology A, vol. 41, issue 4, 2023.
Wong, M. S., H. Zhang, E. S. Trageser, R. M. Anderson, J. S. Speck, S. Nakamura, and S. P. DenBaars, "Narrow ridge III-nitride m-plane violet edge-emitting laser diodes with sidewall passivation using atomic layer deposition", Gallium Nitride Materials and Devices XVIII: International Society for Optics and Photonics, 2023.
2021
Kamikawa, T., S. Gandrothula, H. Li, B. V. Olivia, F. Wu, D. Cohen, J. S. Speck, S. P. DenBaars, and S. Nakamura, "New fabrication method of InGaN laser diode by epitaxial lateral overgrowth and cleavable technique from free-standing non- and semi-polar GaN substrate", Gallium Nitride Materials and Devices XVI: International Society for Optics and Photonics, 2021.
2019
Bonef, B., S. D. Harrington, D. J. Pennachio, J. S. Speck, and C. J. Palmstrøm, "Nanometer scale structural and compositional inhomogeneities of half-Heusler CoTi1-xFexSb thin films", Journal of Applied Physics, vol. 125, pp. 205301, 2019.
Zhang, Y., A. Mauze, F. Alema, A. Osinsky, and J. S. Speck, "Near unity ideality factor for sidewall Schottky contacts on un-intentionally doped $\upbeta$-Ga2O3", Applied Physics Express, vol. 12, pp. 044005, mar, 2019.
2018
Han, S-H., A. Mauze, E. Ahmadi, T. Mates, Y. Oshima, and J. S. Speck, "n-type dopants in (001) β-Ga2O3 grown on (001) β-Ga2O3 substrates by plasma-assisted molecular beam epitaxy", Semiconductor Science and Technology, vol. 33, no. 4: IOP Publishing, pp. 045001, 2018.
2017
Bonef, B., R. Cramer, and J. S. Speck, "Nanometer scale composition study of MBE grown BGaN performed by atom probe tomography", Journal of Applied Physics, vol. 121, no. 22: AIP Publishing, pp. 225701, 2017.
Rolland, N., F. Vurpillot, S. Duguay, B. Mazumder, J. S. Speck, and D. Blavette, "New Atom Probe Tomography Reconstruction Algorithm for Multilayered Samples: Beyond the Hemispherical Constraint", Microscopy and Microanalysis, vol. 23, no. 2: Cambridge University Press, pp. 247–254, 2017.
Huang, J-J., H-C. Kuo, and S-C. Shen, Nitride Semiconductor Light-Emitting Diodes (LEDs): Materials, Technologies, and Applications: Woodhead Publishing, 2017.
Forman, C. A., S. Lee, E. C. Young, J. T. Leonard, D. A. Cohen, B. P. Yonkee, T. Margalith, R. M. Farrell, S. P. DenBaars, J. S. Speck, et al., "Nonpolar GaN-based vertical-cavity surface-emitting lasers", Photonics Conference (IPC), 2017 IEEE: IEEE, pp. 233–234, 2017.
2016
Speck, J. S., New Faces of GaN: Growth, Doping and Devices, 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.
Leonard, JT., BP. Yonkee, DA. Cohen, L. Megalini, S. Lee, JS. Speck, SP. DenBaars, and S. Nakamura, "Nonpolar III-nitride vertical-cavity surface-emitting laser with a photoelectrochemically etched air-gap aperture", Applied Physics Letters, vol. 108, no. 3: AIP Publishing, pp. 031111, 2016.
2015
Ahmadi, E., F. Wu, H. Li, S. W. Kaun, M. Tahhan, K. Hestroffer, S. Keller, J. S. Speck, and U. K. Mishra, "N-face GaN/AlN/GaN/InAlN and GaN/AlN/AlGaN/GaN/InAlN high-electron-mobility transistor structures grown by plasma-assisted molecular beam epitaxy on vicinal substrates", Semiconductor Science and Technology, vol. 30, no. 5: IOP Publishing, pp. 055012, 2015.
DenBaars, S. P., M. C. Schmidt, K. Choong Kim, J. S. Speck, and S. Nakamura, Non-polar and semi-polar light emitting devices, 2015.
Craven, M. D., and J. Stephen Speck, Non-polar gallium nitride thin films grown by metalorganic chemical vapor deposition, may # " 26", 2015.
Leonard, JT., DA. Cohen, BP. Yonkee, RM. Farrell, T. Margalith, S. Lee, SP. DenBaars, JS. Speck, and S. Nakamura, "Nonpolar III-nitride vertical-cavity surface-emitting lasers incorporating an ion implanted aperture", Applied Physics Letters, vol. 107, no. 1: AIP Publishing, pp. 011102, 2015.
2014
Wu, Y-R., C-Y. Huang, Y. Zhao, and JS. Speck, "Nonpolar and semipolar LEDs", Nitride Semiconductor Light-Emitting Diodes (LEDs), pp. 250–275, 2014.
Holder, CO., JT. Leonard, RM. Farrell, DA. Cohen, B. Yonkee, JS. Speck, SP. DenBaars, S. Nakamura, and DF. Feezell, "Nonpolar III-nitride vertical-cavity surface emitting lasers with a polarization ratio of 100% fabricated using photoelectrochemical etching", Applied Physics Letters, vol. 105, no. 3: AIP, pp. 031111, 2014.
2013
Marcinkevičius, S., Y. Zhao, KM. Kelchner, S. Nakamura, SP. DenBaars, and JS. Speck, "Near-field investigation of spatial variations of (20 2\= 1\=) InGaN quantum well emission spectra", Applied Physics Letters, vol. 103, no. 13: AIP, pp. 131116, 2013.
Wong, M. Hoi, S. Keller, S. Dasgupta Nidhi, D. J. Denninghoff, S. Kolluri, D. F. Brown, J. Lu, N. A. Fichtenbaum, E. Ahmadi, U. Singisetti, et al., "N-polar GaN epitaxy and high electron mobility transistors", Semiconductor Science and Technology, vol. 28, no. 7: IOP Publishing, pp. 074009, 2013.
2012
Lang, J. R., and J. S. Speck, "NH3-rich growth of InGaN and InGaN/GaN superlattices by NH3-based molecular beam epitaxy", Journal of Crystal Growth, vol. 346, no. 1: North-Holland, pp. 50–55, 2012.
Cardwell, DW., AR. Arehart, C. Poblenz, Y. Pei, JS. Speck, UK. Mishra, SA. Ringel, and JP. Pelz, "Nm-scale measurements of fast surface potential transients in an AlGaN/GaN high electron mobility transistor", Applied Physics Letters, vol. 100, no. 19: AIP, pp. 193507, 2012.

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