Multi-modal optimization of bismuth vanadate photoanodes via combinatorial alloying and hydrogen processing†,Chemical Communications

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Multi-modal optimization of bismuth vanadate photoanodes via combinatorial alloying and hydrogen processing†
Chemical Communications ( IF 4.3 ) Pub Date : 2018-12-06 00:00:00 , DOI: 10.1039/c8cc07156j
P. F. Newhouse _{1,

2,

3} , D. Guevarra _{1,

2,

3} , M. Umehara _{1,

2,

3,

4,

5} , D. A. Boyd _{1,

2,

3} , L. Zhou _{1,

2,

3} , J. K. Cooper _{3,

6,

7,

8,

9} , J. A. Haber _{1,

2,

3} , J. M. Gregoire _{1,

2,

3}

Affiliation

Alloying transition metals, such as Mo, into BiVO₄ has emerged as the primary mechanism for improving carrier transport in this photoanode for solar fuels production. The present work establishes the generality of improving photoelectrochemical performance through co-alloying with a transition metal electron donor and a structure-modulating rare earth. Further improvement for all such alloys is obtained by annealing the oxide materials in H₂, ultimately producing photoanodes with above 3 mA cm⁻² photocurrent density under AM 1.5G illumination, in the top tier of compact BiVO₄ films.

中文翻译：

通过组合合金化和氢气处理对钒酸铋光阳极进行多峰优化†

将过渡金属（例如Mo）与BiVO ₄合金化已成为改善此光电阳极中用于太阳能燃料生产的载流子传输的主要机理。本工作建立了通过与过渡金属电子供体和结构调节稀土共同合金化来提高光电化学性能的一般性。通过在H _2中对氧化物材料进行退火，最终在紧凑型BiVO ₄薄膜的顶层，在AM 1.5G照射下最终产生光电流密度高于3 mA cm ^-2的光阳极，可以对所有这些合金进行进一步的改进。

更新日期：2018-12-06

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