Shingi Yamaguchi, Kentaroh Watanabe, Tsutomu Minegishi, Masakazu Sugiyama. Solar to hydrogen efficiency of 28.2% under natural sunlight achieved by a combination of five-junction concentrator photovoltaic modules and electrolysis cells. SUSTAINABLE ENERGY & FUELS. 2023. 7. 6. 1377-1381
Meita Asami, Kentaroh Watanabe, Riko Yokota, Yoshiaki Nakano, Masakazu Sugiyama. Comparison of Various Voltage Metrics for the Evaluation of the Nonradiative Voltage Loss in Quantum-Structure Solar Cells. IEEE JOURNAL OF PHOTOVOLTAICS. 2022
Meita Asami, Kentaroh Watanabe, Yoshiaki Nakano, Masakazu Sugiyama. Smooth Surface Morphology and Long Carrier Lifetime of InGaP Realized by Low-Temperature-Grown Cover Layer. PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS. 2022. 259. 2
Maui Hino, Meita Asami, Kentaroh Watanabe, Yoshiaki Nakano, Masakazu Sugiyama. Enhanced Radiative Efficiency of InGaAs/GaAsP Multiple Quantum Wells by Optimizing the Thickness of Interlayers. PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE. 2022. 219. 4
Maxime Giteau, Edouard De Moustier, Daniel Suchet, Hamidreza Esmaielpour, Hassanet Sodabanlu, Kentaroh Watanabe, Stéphane Collin, Jean François Guillemoles, Yoshitaka Okada. Identification of surface and volume hot-carrier thermalization mechanisms in ultrathin GaAs layers. Journal of Applied Physics. 2020. 128. 19
K. Neuhaus, C. Alonso, L. Gladysz, A. Delamarre, K. Watanabe, M. Sugiyama. Solar to Hydrogen Conversion using Concentrated Multi-junction Photovoltaics and Distributed Micro-Converter Architecture. 7th International IEEE Conference on Renewable Energy Research and Applications, ICRERA 2018. 2018. 744-747
Hassanet Sodabanlu, Akinori Ubukata, Kentaroh Watanabe, Takeyoshi Sugaya, Yoshiaki Nakano, Masakazu Sugiyama. Impacts of V/III ratio on the quality and performance of GaAs p-n solar cells by ultrafast MOVPE. 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC. 2018. 249-252
Warakorn Yanwachirakul, Naoya Miyashita, Hassanet Sodabanlu, Kentaroh Watanabe, Masakazu Sugiyama, Yoshitaka Okada, Yoshiaki Nakano. Carrier Collection Improvement In InGaAs/GaAsN Multiple Quantum Well Solar Cell With Flat Conduction Band. Proc. The 7th World Conference on Photovoltaic Energy Conversion. 2018. pp.1874-1877