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
收藏
页码：1066 / 1071
页数：6
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