Mo-Doped BiVO4 Photoanodes Synthesized by Reactive Sputtering

被引：108

作者：

Chen, Le ^{[1
,2
]}

Toma, Francesca M. ^{[1
,3
]}

Cooper, Jason K. ^{[1
,2
]}

Lyon, Alan ^{[1
,2
]}

Lin, Yongjing ^{[1
,2
,4
]}

Sharp, Ian D. ^{[1
,5
]}

Ager, Joel W. ^{[1
,2
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Joint Ctr Artificial Photosynth, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA

[4] Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA

[5] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA

来源：

CHEMSUSCHEM | 2015年 / 8卷 / 06期

关键词：

artificial photosynthesis; semiconductors; thin films; water oxidation; water splitting; PHOTOELECTROCHEMICAL WATER OXIDATION; BISMUTH VANADATE PHOTOANODES; VISIBLE-LIGHT; SOLAR PHOTOELECTROLYSIS; ELECTRONIC-STRUCTURE; EFFICIENT; CATALYST; FILMS; EVOLUTION; CELLS;

D O I：

10.1002/cssc.201402984

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report a scalable and reproducible method for reactive co-sputtering of Mo-doped BiVO4 thin films with broad compositional control. Optimal photoanode performance is achieved at a Mo concentration of 3at.%. Incorporation of Mo promotes growth of large grains and reduces majority carrier transport limitations, resulting in maximum AM1.5G photocurrent densities of 3.5mAcm(-2) at 1.23V vs. RHE in pH6.8 buffer solution containing 0.1M Na2SO3 as a hole scavenger. Operation as a front-illuminated water oxidation photoanode is achieved by balancing the operational stability, catalytic activity, and parasitic optical absorption of a FeOOH oxygen evolution catalyst. FeOOH/Mo:BiVO4 thin film photoanodes enable water oxidation under the front-side illumination conditions used in integrated tandem water splitting devices.

引用

页码：1066 / 1071

页数：6

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