Dr. Kohei Ueno Profile

Dr. Kohei Ueno

at Institute of Industrial Science, Univ of Tokyo

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Author

Publications (3)

Proceedings Article | 9 March 2024 Presentation

Characteristics of group III-nitride films prepared by pulsed sputtering

Hiroshi Fujioka, Kohei Ueno

Proceedings Volume PC12886, PC1288603 (2024) https://doi.org/10.1117/12.3004962

KEYWORDS: Sputter deposition, Optical components, Gallium nitride, Field effect transistors, Crystals, Aluminum gallium nitride

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Proceedings Article | 8 March 2024 Presentation + Paper

Longitudinal optical (LO) and LO-like phonon resonant mid-infrared radiation emission and absorption by surface micro-structures on III-nitrides

Yoshihiro Ishitani, Bojin Lin, Hnin Lai Lai Aye, Daiki Yoshikawa, Hideto Miyake, Kohei Ueno, Hiroshi Fujioka

Proceedings Volume 12886, 1288605 (2024) https://doi.org/10.1117/12.3000696

KEYWORDS: Phonons, Gallium nitride, Interfaces, Dielectrics, Semiconducting wafers, Mid infrared, Polarization

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Proceedings Article | 21 March 2023 Presentation

Epitaxial growth of NbN superconductors on lattice-matched AlN wide-bandgap semiconductors

Atsushi Kobayashi, Kohei Ueno, Hiroshi Fujioka

Proceedings Volume PC12421, (2023) https://doi.org/10.1117/12.2647801

KEYWORDS: Semiconductors, Superconductors, Aluminum nitride, Sputter deposition, Thin films, Niobium, Thin film devices, Superconductivity, Single photon detectors, Quantum communications

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