Prof. Kentaroh Watanabe Profile

Prof. Kentaroh Watanabe

Project Associate Professor at Univ of Tokyo

SPIE Involvement:

Author

Publications (20)

Proceedings Article | 10 March 2020 Presentation

Analysis of perimeter recombination on multijunction solar cells using luminescence imaging (Conference Presentation)

Hao Xu, Hassanet Sodabanlu, Matthew Wilkins, Amaury Delamarre, Theodorus Wijaya, Kentaroh Watanabe, Yoshiaki Nakano, Masakazu Sugiyama

Proceedings Volume 11275, 112750K (2020) https://doi.org/10.1117/12.2545575

KEYWORDS: Luminescence, Gallium arsenide, Multijunction solar cells, Indium gallium phosphide, Semiconducting wafers, Metalorganic chemical vapor deposition, Solar cells, Resistance

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Proceedings Article | 3 March 2020 Paper

Fabrication and optical characterization of ultrathin III-V transferred heterostructures for hot-carrier absorbers

Maxime Giteau, Kentaroh Watanabe, Naoya Miyashita, Hassanet Sodabanlu, Fabien Atlan, Daniel Suchet, Stéphane Collin, Jean-François Guillemoles, Yoshitaka Okada

Proceedings Volume 11275, 1127507 (2020) https://doi.org/10.1117/12.2544537

KEYWORDS: Gold, Gallium arsenide, Absorption, Etching, Mirrors, Photons, Ellipsometry, Electrons, Solar cells, Silicon

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Proceedings Article | 27 February 2019 Paper

Effective mobility map for InGaP/InGaP multiple quantum-well-based solar cells

Hsiang-Hung Huang, Kasidit Toprasertpong, Amaury Delamarre, Justin Zenas Sun, Kentaroh Watanabe, Masakazu Sugiyama, Yoshiaki Nakano

Proceedings Volume 10913, 1091310 (2019) https://doi.org/10.1117/12.2508592

KEYWORDS: Solar cells, Electrons, Quantum wells, Indium gallium phosphide, Quantum efficiency, Photovoltaics, Electrical engineering, Multijunction solar cells

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Proceedings Article | 27 February 2019 Paper

Light absorption enhancement in ultra-thin layers for hot-carrier solar cells: first developments towards the experimental demonstration of an enhanced hot-carrier effect with light trapping

Maxime Giteau, Kentaroh Watanabe, Naoya Miyashita, Hassanet Sodabanlu, Julie Goffard, Amaury Delamarre, Daniel Suchet, Ryo Tamaki, Zacharie Jehl, Laurent Lombez, Masakazu Sugiyama, Andrea Cattoni, Stéphane Collin, Jean-François Guillemoles, Yoshitaka Okada

Proceedings Volume 10913, 109130D (2019) https://doi.org/10.1117/12.2505908

KEYWORDS: Gallium arsenide, Epitaxial lateral overgrowth, Solar cells, Absorption, Etching, Mirrors, Luminescence, Electrons

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Proceedings Article | 16 February 2018 Presentation + Paper

Characterization of InGaAs/GaAsN multiple quantum well with flat conduction band for improving carrier transport in multijuction solar cell

W. Yanwachirakul, N. Miyashita, H. Sodabanlu, K. Watanabe, Y. Okada, M. Sugiyama, Y. Nakano

Proceedings Volume 10527, 105270E (2018) https://doi.org/10.1117/12.2296574

KEYWORDS: Indium gallium arsenide, Gallium arsenide, Solar cells, Quantum wells, Germanium, Electron transport, Luminescence, Time resolved spectroscopy

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Proceedings Article | 23 February 2017 Presentation + Paper

Characterisation of multi-junction solar cells by mapping of the carrier transport efficiency using luminescence emission

Amaury Delamarre, Jieyang Jia, Paul Verdier, Kentaroh Watanabe, Masakazu Sugiyama, Yoshiaki Nakano, Jean-François Guillemoles

Proceedings Volume 10099, 100990Z (2017) https://doi.org/10.1117/12.2250866

KEYWORDS: Multijunction solar cells, Luminescence, Solar cells, Photovoltaics, Electroluminescence, Spatial resolution, Resistance, Indium gallium phosphide, Gallium arsenide, Diodes, Associative arrays

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Proceedings Article | 14 March 2016 Paper

Quasi-Fermi level splitting evaluation based on electroluminescence analysis in multiple quantum-well solar cells for investigating cell performance under concentrated light

Tomoyuki Inoue, Kasidit Toprasertpong, Amaury Delamarre, Kentaroh Watanabe, Myriam Paire, Laurent Lombez, Jean-François Guillemoles, Masakazu Sugiyama, Yoshiaki Nakano

Proceedings Volume 9743, 974316 (2016) https://doi.org/10.1117/12.2212572

KEYWORDS: Electroluminescence, Gallium arsenide, Solar cells, Quantum wells, Luminescence, Semiconductors, Solar concentrators, Photovoltaics, Thermal effects, Nanostructuring, Sun, Resistance, Photons, Multijunction solar cells

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Proceedings Article | 14 March 2016 Paper

Effective drift mobility approximation in multiple quantum-well solar cell

Kasidit Toprasertpong, Tomoyuki Inoue, Kentaroh Watanabe, Takashi Kita, Masakazu Sugiyama, Yoshiaki Nakano

Proceedings Volume 9743, 974315 (2016) https://doi.org/10.1117/12.2209611

KEYWORDS: Carrier dynamics, Solar cells, Quantum wells, Device simulation, Nanostructures, Performance modeling, Structural design, Absorption, Quantum dots, Gallium arsenide

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SPIE Journal Paper | 5 June 2015

Quantitative optical measurement of chemical potentials in intermediate band solar cells

Pierre Rale, Amaury Delamarre, Gilbert El-Hajje, Ryo Tamaki, Kentaroh Watanabe, Yasushi Shoji, Yoshitaka Okada, Masakazu Sugiyama, Laurent Lombez, Jean-François Guillemoles

JPE, Vol. 5, Issue 01, 053092, (June 2015) https://doi.org/10.1117/12.10.1117/1.JPE.5.053092

KEYWORDS: Solar cells, Luminescence, Absorption, Quantum wells, Optical testing, External quantum efficiency, Gallium arsenide, Calibration, Hyperspectral imaging, Imaging systems

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Proceedings Article | 16 March 2015 Paper

Investigation of carrier collection in multi-quantum well solar cells by luminescence spectra analysis

Amaury Delamarre, Hiromasa Fujii, Kentaroh Watanabe, Jean-François Guillemoles, Yoshiaki Nakano, Masakazu Sugiyama

Proceedings Volume 9358, 93580Y (2015) https://doi.org/10.1117/12.2081303

KEYWORDS: Luminescence, Gallium arsenide, Solar cells, Quantum wells, Doping, Electroluminescence, External quantum efficiency, Sulfur, Sun, Absorption

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SPIE Journal Paper | 29 December 2014

Plasma etching antireflection nanostructures on optical elements in concentrator photovoltaic systems

Efrain Eduardo Tamayo Ruiz, Kentaroh Watanabe, Ryo Tamaki, Takuya Hoshii, Masakazu Sugiyama, Yoshitaka Okada, Kenjiro Miyano, Aleksandra Cvetkovic, Rubén Mohedano, Maikel Hernández

JPE, Vol. 5, Issue 01, 057006, (December 2014) https://doi.org/10.1117/12.10.1117/1.JPE.5.057006

KEYWORDS: Plasma etching, Transmittance, Nanostructures, Optical components, Antireflective coatings, Polymethylmethacrylate, External quantum efficiency, Interfaces, Glasses, Nanostructuring

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Proceedings Article | 25 March 2013 Paper

Carrier collection efficiency in multiple quantum well solar cells

Hiromasa Fujii, Kasidit Toprasertpong, Kentaroh Watanabe, Masakazu Sugiyama, Yoshiaki Nakano

Proceedings Volume 8620, 86201F (2013) https://doi.org/10.1117/12.2003287

KEYWORDS: Gallium arsenide, Quantum efficiency, Solar cells, External quantum efficiency, Absorption, Quantum wells, Reflectivity, Transmittance, Photons, Metals

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Proceedings Article | 21 February 2012 Paper

Exploring the potential of quantum wells for efficiency enhancement in photovoltaic cells

Masakazu Sugiyama, Yunpeng Wang, Hiromasa Fujii, Hassanet Sodabanlu, Yu Wen, Kentaroh Watanabe, Yoshiaki Nakano

Proceedings Volume 8256, 82560D (2012) https://doi.org/10.1117/12.911078

KEYWORDS: Stereolithography, Absorption, Quantum wells, External quantum efficiency, Superlattices, Gallium arsenide, Solar cells, Quantum efficiency, Infrared radiation, Photovoltaics

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Proceedings Article | 21 July 2008 Paper

Fabrication of the GaAs based terahertz photoconductors and the photometer for Tera-GATE

Kentaroh Watanabe, Kyouhei Yamashita, Hirokazu Kataza, Takafumi Kamizuka, Takehiko Wada, Moriaki Wakaki, Osamu Abe, Hiroshi Murakami

Proceedings Volume 7020, 702020 (2008) https://doi.org/10.1117/12.789143

KEYWORDS: Gallium arsenide, Photoresistors, Sensors, Liquid phase epitaxy, Telescopes, Astronomy, Photons, Crystals, Tellurium, Selenium

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Proceedings Article | 17 July 2008 Paper

THz balloon-borne telescope: Tera-GATE project

T. Kamizuka, H. Kataza, K. Watanabe, T. Wada, H. Murakami

Proceedings Volume 7012, 70123R (2008) https://doi.org/10.1117/12.790208

KEYWORDS: Telescopes, Mirrors, Terahertz radiation, Mirror pointing, Astronomical telescopes, Gallium arsenide, Photoresistors, Astronomy, Surface conduction electron emitter displays, Optical instrument design

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Proceedings Article | 10 July 2008 Paper

Optical design of image stabilizing Cassegrain-like balloon-borne telescope

Hirokazu Kataza, Takafumi Kamizuka, Kentaroh Watanabe, Hiroshi Murakami, Takehiko Wada

Proceedings Volume 7012, 70123S (2008) https://doi.org/10.1117/12.788730

KEYWORDS: Mirrors, Telescopes, Spherical lenses, Optical design, Sensing systems, Space telescopes, Control systems, Mirror stabilization, Sensors, Aspheric lenses

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Proceedings Article | 4 January 2008 Paper

GaAs extrinsic photoconductors for the terahertz astronomy

Kentaroh Watanabe, Kyouhei Yamashita, Hidekazu Kitagawa, Moriaki Wakaki, Osamu Abe, Hiroshi Murakami

Proceedings Volume 6840, 68401F (2008) https://doi.org/10.1117/12.757656

KEYWORDS: Gallium arsenide, Photoresistors, Sensors, Liquid phase epitaxy, Astronomy, Tellurium, Crystals, Selenium, Ionization, Metals

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Proceedings Article | 8 October 2004 Paper

Development of GaAs photoconductors for far-infrared/submillimeter astronomy

Kentaroh Watanabe, Hiroshi Murakami, Takuro Ohata, Moriaki Wakaki, Osamu Abe

Proceedings Volume 5498, (2004) https://doi.org/10.1117/12.551053

KEYWORDS: Sensors, Gallium arsenide, Liquid phase epitaxy, Photoresistors, Crystals, Photons, Astronomy, Electrons, Sensor performance, Quantum efficiency

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Proceedings Article | 24 May 2000 Paper

Gain stabilized configuration in PRCM circuit and optical bus system

Takahiko Nakatogawa, Atsushi Okamoto, Kentaro Watanabe, Kunihiro Sato, Hajime Okada

Proceedings Volume 4089, (2000) https://doi.org/10.1117/12.386852

KEYWORDS: Laser beam diagnostics, Beam controllers, Phase conjugation, Optical circuits, Integrated optics, Crystals, Four wave mixing, Laser crystals, Energy transfer, Active optics

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Proceedings Article | 7 May 1999 Paper

PRCM and its optical bus application by photorefractive four-wave mixing with cross-polarization pumping

Atsushi Okamoto, Kentaro Watanabe, Hisashi Matsuoka, Yoshihisa Takayama

Proceedings Volume 3740, (1999) https://doi.org/10.1117/12.347715

KEYWORDS: Crystals, Four wave mixing, Switching, Multiplexing, Ferroelectric materials, Phase conjugation, Polarization, Optical testing, Beam controllers, Phase matching

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Showing 5 of 20 publications

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