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Water-splitting using photoelectrodes of titania and titania-perovskite halite composite films

Published online by Cambridge University Press:  13 May 2015

Yu-Shiuan Lai ,
Tao-Wei Yang ,
Ming-Show Wong ,
Yi-Hao Pai  and
Su-Hua Chen
Yu-Shiuan Lai
Affiliation:
Department of Materials Science and Engineering, National Dong Hwa University, Hualien, Taiwan
Tao-Wei Yang
Affiliation:
Department of Materials Science and Engineering, National Dong Hwa University, Hualien, Taiwan
Ming-Show Wong
Affiliation:
Department of Materials Science and Engineering, National Dong Hwa University, Hualien, Taiwan
Yi-Hao Pai
Affiliation:
Department of Opto-Electronic Engineering, National Dong Hwa University, Hualien, Taiwan
Su-Hua Chen
Affiliation:
Department of Materials Science and Engineering, National Dong Hwa University, Hualien, Taiwan
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Abstract

Titanium oxide photoelectrodes have been used for water splitting for a few decades, but have low solar-to-hydrogen efficiencies. Perovskite halides (e.g., CH3NH3PbI3) have recently emerged as an efficient light absorber system. We try to combine the two materials to create new photoelectrodes to achieve a higher efficiency for hydrogen production. The photoelectrodes are investigated for water-splitting hydrogen production under Xe light irradiation by photoelectrochemical (PEC) reaction. Since perovskite halides are favorable light harvesters under UV and visible light irradiation, the composite films of titania and perovskite halide would achieve efficient water splitting. The hydrogen production rate using the composite films is higher than that using anatase TiO2 electrode. However, the composite films are not stable in water under light irradiation and the perovskite halide gradually decomposes into lead halide.

Keywords

energy generationsputteringfilm
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1776: Symposium J – Latest Advances in Solar Water Splitting , 2015 , pp. 7 - 12
Copyright
Copyright © Materials Research Society 2015 

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References

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