Issue 1, 2018
From the journal:

Sustainable Energy & Fuels

Activation of a particulate Ta3N5 water-oxidation photoanode with a GaN hole-blocking layer†

Yusuke Asakura, ORCID logo ‡a   Tomohiro Higashi, ORCID logo a   Hiroshi Nishiyama,a   Hiroyuki Kobayashi,bc   Mamiko Nakabayashi,d   Naoya Shibata,d   Tsutomu Minegishi, ORCID logo ae   Takashi Hisatomi, ORCID logo a   Masao Katayama,a   Taro Yamadaa  and  Kazunari Domen ORCID logo *a  

* Corresponding authors

a Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
E-mail: domen@chemsys.t.u-tokyo.ac.jp

b Japan Technological Research Association of Artificial Photosynthetic Chemical Process, 2-11-9 Iwamotocho, Chiyoda-ku, Tokyo 101-0032, Japan

c Fujifilm Corporation, 577 Ushijima, Kaisei-Machi, Ashigarakami-gun, Kanagawa 258-8577, Japan

d Institute of Engineering Innovation, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8656, Japan

e Japan Science and Technology Agency/Precursory Research for Embryonic Science and Technology (JST/PRESTO), Kawaguchi Center Building, 4-1-8 Honcho, Kawaguchi-shi, Saitama 332-0012, Japan

Abstract

Particulate Ta3N5, a material that responds to visible light for photoelectrochemical O2 evolution, was glued to a metallic GaN conducting layer. The electrode was able to oxidize water with 1.8-fold higher efficiency than that without GaN. The GaN layer blocked the hole current from Ta3N5 to the back-contact metal layer and prevented hole–electron recombination.

Graphical abstract: Activation of a particulate Ta3N5 water-oxidation photoanode with a GaN hole-blocking layer

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Article information

DOI
https://doi.org/10.1039/C7SE00402H
Article type
Communication
Submitted
16 Aug 2017
Accepted
13 Oct 2017
First published
13 Oct 2017

Sustainable Energy Fuels, 2018,2, 73-78

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Activation of a particulate Ta3N5 water-oxidation photoanode with a GaN hole-blocking layer

Y. Asakura, T. Higashi, H. Nishiyama, H. Kobayashi, M. Nakabayashi, N. Shibata, T. Minegishi, T. Hisatomi, M. Katayama, T. Yamada and K. Domen, Sustainable Energy Fuels, 2018, 2, 73 DOI: 10.1039/C7SE00402H

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