Publications

Found 158 results
Author Title Type [ Year(Desc)]
Filters: Author is Mishra, Umesh K  [Clear All Filters]
2008
Brown, D. F., S. Keller, F. Wu, J. S. Speck, S. P. DenBaars, and U. K. Mishra, "Growth and characterization of N-polar GaN films on SiC by metal organic chemical vapor deposition", Journal of Applied Physics, vol. 104, no. 2: AIP, pp. 024301, 2008.
Chichibu, S. F., A. Uedono, T. Onuma, S. P. DenBaars, U. K. Mishra, J. S. Speck, and S. Nakamura, "Impact of point defects on the luminescence properties of (Al, Ga) N", Materials Science Forum, vol. 590: Trans Tech Publications, pp. 233–248, 2008.
Chu, R., C. Poblenz, M. Hoi Wong, S. Dasgupta, S. Rajan, Y. Pei, F. Recht, L. Shen, J. S. Speck, and U. K. Mishra, "Improved Performance of Plasma-Assisted Molecular Beam Epitaxy Grown AlGaN/GaN High Electron Mobility Transistors with Gate-Recess and CF4-Treatment", Applied physics express, vol. 1, no. 6: IOP Publishing, pp. 061101, 2008.
Imer, B., M. Schmidt, B. Haskell, S. Rajan, B. Zhong, K. Kim, F. Wu, T. Mates, S. Keller, U. K. Mishra, et al., "Improved quality nonpolar a-plane GaN/AlGaN UV LEDs grown with sidewall lateral epitaxial overgrowth (SLEO)", physica status solidi (a), vol. 205, no. 7: WILEY-VCH Verlag, pp. 1705–1712, 2008.
Schaake, C. A., N. A. Fichtenbaum, C. J. Neufeld, S. Keller, S. P. DenBaars, J. S. Speck, and U. K. Mishra, "M-plane InGaN/GaN light emitting diodes fabricated by MOCVD regrowth on c-plane patterned templates", physica status solidi (c), vol. 5, no. 9: Wiley Online Library, pp. 2963–2965, 2008.
Wong, M. Hoi, Y. Pei, R. Chu, S. Rajan, B. L. Swenson, D. F. Brown, S. Keller, S. P. DenBaars, J. S. Speck, and U. K. Mishra, "N-face metal–insulator–semiconductor high-electron-mobility transistors with AlN back-barrier", IEEE Electron Device Letters, vol. 29, no. 10: IEEE, pp. 1101–1104, 2008.
Wong, M. Hoi, F. Wu, T. E. Mates, J. S. Speck, and U. K. Mishra, "Polarity inversion of N-face GaN by plasma-assisted molecular beam epitaxy", Journal of Applied Physics, vol. 104, no. 9: AIP, pp. 093710, 2008.
Wong, M. Hoi, Y. Pei, R. Chu, S. Rajan, B. L. Swenson, D. F. Brown, S. Keller, S. P. DenBaars, J. S. Speck, and U. K. Mishra, "Power performance of MBE-grown N-face high electron mobility transistors with AIN back barrier", Device Research Conference, 2008: IEEE, pp. 201–202, 2008.
Chu, R., C. Poblenz, M. Hoi Wong, S. Dasgupta, S. Rajan, Y. Pei, F. Recht, L. Shen, J. S. Speck, and U. K. Mishra, "Semiconductor, superconductor, spintronic, dielectric, and organic materials-Improved Performance of Plasma-Assisted Molecular Beam Epitaxy Grown AlGaN/GaN High Electron Mobility Transistors with Gate-Recess and CF4-Treatment", Applied Physics Express, vol. 1, no. 6, pp. 61101, 2008.
Nidhi, S. Rajan, S. Keller, F. Wu, S. P. DenBaars, J. S. Speck, and U. K. Mishra, "Study of interface barrier of SiN x/GaN interface for nitrogen-polar GaN based high electron mobility transistors", Journal of Applied Physics, vol. 103, no. 12: AIP, pp. 124508, 2008.
2009
Fujiwara, T., S. Rajan, S. Keller, M. Higashiwaki, J. S. Speck, S. P. DenBaars, and U. K. Mishra, "Enhancement-mode m-plane AlGaN/GaN heterojunction field-effect transistors", Applied Physics Express, vol. 2, no. 1: IOP Publishing, pp. 011001, 2009.
Dasgupta, S., Y. Pei, B. L. Swenson, D. F. Brown, S. Keller, J. S. Speck, U. K. Mishra, and others, "$ f_ ${$T$}$ $ and $ f_ ${$$\backslash$rm MAX$}$ $ of 47 and 81 GHz, Respectively, on N-Polar GaN/AlN MIS-HEMT", IEEE Electron Device Letters, vol. 30, no. 6: IEEE, pp. 599–601, 2009.
Chakraborty, A., B. A. Haskell, S. Keller, J. S. Speck, S. P. DenBaars, S. Nakamura, and U. K. Mishra, Fabrication of nonpolar indium gallium nitride thin films, heterostructures and devices by metalorganic chemical vapor deposition, 2009.
Ben-Yaacov, T., T. Ive, C. G. Van de Walle, U. K. Mishra, J. S. Speck, and S. P. DenBaars, "Growth of In-doped ZnO films by metalorganic chemical vapor deposition on GaN (0001) templates", physica status solidi (c), vol. 6, no. 6: Wiley Online Library, pp. 1464–1467, 2009.
Wong, M. Hoi, Y. Pei, D. F. Brown, S. Keller, J. S. Speck, and U. K. Mishra, "High performance MBE-grown N-face microwave GaN HEMTs with> 70% PAE", Device Research Conference, 2009. DRC 2009: IEEE, pp. 157–158, 2009.
Wong, M. Hoi, Y. Pei, J. S. Speck, and U. K. Mishra, "High power N-face GaN high electron mobility transistors grown by molecular beam epitaxy with optimization of AlN nucleation", Applied Physics Letters, vol. 94, no. 18: AIP, pp. 182103, 2009.
Wong, M. Hoi, Y. Pei, D. F. Brown, S. Keller, J. S. Speck, and U. K. Mishra, "High-performance N-face GaN microwave MIS-HEMTs with> 70% power-added efficiency", IEEE Electron Device Letters, vol. 30, no. 8: IEEE, pp. 802–804, 2009.
Ive, T., T. Ben-Yaacov, C. G. Van de Walle, U. K. Mishra, S. P. DenBaars, and J. S. Speck, "Homoepitaxial growth and characterization of ZnO (0001) thin films grown by metalorganic chemical vapor epitaxy", physica status solidi (c), vol. 6, no. 6: Wiley Online Library, pp. 1460–1463, 2009.
Dasgupta, S., D. F. Brown, S. Keller, J. S. Speck, U. K. Mishra, and others, "N-polar GaN-based highly scaled self-aligned MIS-HEMTs with state-of-the-art f T. L G product of 16.8 GHz-μm", Electron Devices Meeting (IEDM), 2009 IEEE International: IEEE, pp. 1–3, 2009.
Fujiwara, T., S. Keller, M. Higashiwaki, J. S. Speck, S. P. DenBaars, and U. K. Mishra, "Si Delta-Doped m-Plane AlGaN/GaN Heterojunction Field-Effect Transistors", Applied physics express, vol. 2, no. 6: IOP Publishing, pp. 061003, 2009.
Tamboli, A. C., M. C. Schmidt, S. Rajan, J. S. Speck, U. K. Mishra, S. P. DenBaars, and E. L. Hu, "Smooth top-down photoelectrochemical etching of m-plane GaN", Journal of The Electrochemical Society, vol. 156, no. 1: The Electrochemical Society, pp. H47–H51, 2009.
2010
Brown, D. F., S. Keller, T. E. Mates, J. S. Speck, S. P. DenBaars, and U. K. Mishra, "Growth and characterization of In-polar and N-polar InAlN by metal organic chemical vapor deposition", Journal of Applied Physics, vol. 107, no. 3: AIP, pp. 033509, 2010.
Fujiwara, T., S. Keller, J. S. Speck, S. P. DenBaars, and U. K. Mishra, "Low ohmic contact resistance m-plane AlGaN/GaN heterojunction field-effect transistors with enhancement-mode operations", Applied physics express, vol. 3, no. 10: IOP Publishing, pp. 101002, 2010.
Wong, M. Hoi, Y. Pei, D. Brown, J. S. Speck, U. K. Mishra, M. L. Schuette, H. Kim, V. Balasubramanian, and W. Lu, "N-face GaN-based microwave metal-insulator-semiconductor high electron mobility transistors by plasma-assisted molecular beam epitaxy", Proceedings of CS MANTECH Conference. Oregon, USA, pp. 189–192, 2010.
Dasgupta, S., Y. Pei, B. L. Swenson, S. Keller, J. S. Speck, U. K. Mishra, and others, "N-polar GaN/AlN MIS-HEMT for Ka-band power applications", IEEE Electron Device Letters, vol. 31, no. 12: IEEE, pp. 1437–1439, 2010.

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