\beta-Ga

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概要

• 論文の詳細を見る

• We report the photoelectrode properties of an n-type \beta-Ga<inf>2</inf>O<inf>3</inf>single crystal in aqueous solutions. The conduction and valence band-edge potentials were found to be 1.1 V higher and 2.5 V lower than the H⁺/H<inf>2</inf>and O<inf>2</inf>/H<inf>2</inf>O redox potentials, respectively. Photocurrent drastically increased as photogenerated carriers were excited at a photon energy higher than the fundamental absorption edge of 4.7 eV. The incident photon-to-current conversion efficiency was 36% at 5.2 eV. Gaseous oxygen and hydrogen evolved from the photoelectrode and Pt counter electrode, respectively. The stoichiometric water splitting was demonstrated by applying an external bias of 1 V.

• 2013-11-25

著者

• Ohtomo Akira

  Department Of Applied Chemistry Tokyo Institute Of Technology

• Oshima Takayoshi

  Department Of Electronic Science And Engineering Kyoto University

• Yamakoshi Shigenobu

  Tamura Co. Ltd.

• Masui Takekazu

  Koha Co. Ltd.

• Sasaki Kohei

  Tamura Co. Ltd.

• Kuramata Akito

  Tamura Co. Ltd.

• Ohtomo Akira

  Department of Applied Chemistry, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan

• Kuramata Akito

  Tamura Corporation, Sayama, Saitama 350-1328, Japan

• Kaminaga Kenichi

  Department of Applied Chemistry, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan

• Mukai Akira

  Department of Applied Chemistry, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan

• Mashiko Hisanori

  Department of Applied Chemistry, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan

• Masui Takekazu

  KOHA Co., Ltd., Nerima, Tokyo 176-0022, Japan

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