H
Hisashi Uzu
Researcher at Kaneka Corporation
Publications - 30
Citations - 3011
Hisashi Uzu is an academic researcher from Kaneka Corporation. The author has contributed to research in topics: Solar cell & Layer (electronics). The author has an hindex of 11, co-authored 27 publications receiving 2197 citations.
Papers
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Journal ArticleDOI
Silicon heterojunction solar cell with interdigitated back contacts for a photoconversion efficiency over 26
Kunta Yoshikawa,Hayato Kawasaki,Yoshida Wataru,Toru Irie,Katsunori Konishi,Kunihiro Nakano,Toshihiko Uto,Daisuke Adachi,Masanori Kanematsu,Hisashi Uzu,Kenji Yamamoto +10 more
TL;DR: In this paper, a silicon heterojunction with interdigitated back contacts was presented, achieving an efficiency of 26.3% and a detailed loss analysis to guide further developments.
Journal ArticleDOI
Exceeding conversion efficiency of 26% by heterojunction interdigitated back contact solar cell with thin film Si technology
Kunta Yoshikawa,Yoshida Wataru,Toru Irie,Hayato Kawasaki,Katsunori Konishi,Ishibashi Hirotaka,Tsuyoshi Asatani,Daisuke Adachi,Masanori Kanematsu,Hisashi Uzu,Kenji Yamamoto +10 more
TL;DR: In this paper, a heterojunction interdigitated back contact solar cell with conversion efficiency of 26.6% was developed, which was independently confirmed by Fraunhofer Institute for Solar Energysystem Callab.
Journal ArticleDOI
High efficiency solar cells combining a perovskite and a silicon heterojunction solar cells via an optical splitting system
Hisashi Uzu,Mitsuru Ichikawa,Masashi Hino,Kunihiro Nakano,Tomomi Meguro,Jose Luis Hernandez,Hui-Seon Kim,Nam-Gyu Park,Kenji Yamamoto +8 more
TL;DR: In this paper, an optical splitting system was applied to achieve very high conversion efficiency for a full spectrum multi-junction solar cell, which consists of multiple solar cells with different band gap optically coupled via an optical splitter.
Journal ArticleDOI
Minimizing optical losses in monolithic perovskite/c-Si tandem solar cells with a flat top cell.
Rudi Santbergen,Ryota Mishima,Tomomi Meguro,Masashi Hino,Hisashi Uzu,Johan Blanker,Kenji Yamamoto,Miro Zeman +7 more
TL;DR: Optical simulations show that, even with a flat top cell, the monolithic perovskite/c-Si tandem device can reach a matched photocurrent density as high as 19.57 mA/cm2.
Journal ArticleDOI
High-efficiency heterojunction crystalline Si solar cells
TL;DR: In this paper, the authors proposed a two-terminal tandem structure with a heterojunction c-Si solar cell and a perovskite solar cell, which achieved record-breaking conversion efficiencies of 26.7% for cells and 24.5% for modules.