Expanding depletion region via doping: Zn-doped Cu2O buffer layer in Cu2O photocathodes for photoelectrochemical water splitting

被引：0
作者：
Kangha Lee
Cheol-Ho Lee
Jun Young Cheong
Seokwon Lee
Il-Doo Kim
Han-Ik Joh
Doh Chang Lee
机构：
[1] Korea Advanced Institute of Science and Technology (KAIST),Department of Chemical and Biomolecular Engineering (BK21+ Program), KAIST Institute for the Nanocentury
[2] Korea Advanced Institute of Science and Technology (KAIST),Department of Materials Science and Engineering
[3] Korea Institute of Science and Technology (KIST),Carbon Convergence Materials Research Center, Institute of Advanced Composite Materials
[4] Konkuk University,Department of Extreme Energy Engineering
来源：
Korean Journal of Chemical Engineering | 2017年 / 34卷
关键词：
Cu; O; Zn-doped Cu; O; Photocathode; Water Splitting; Photoelectrochemistry;
D O I：
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中图分类号：
学科分类号：
摘要：
We report photoelectrochemical hydrogen evolution reaction using a Cu2O-based photocathode with a layer doped with Zn ions. The doping results in the shift of the onset flat-band potential of the photocathode, likely a consequence of maximized band-bending in the Cu2O/Zn : Cu2O heterojunction. Systematic electrochemical analysis reveals that expansion of depletion region is responsible for the enhanced photoelectrochemical performance, e.g., the increase of photocurrent and reduced internal resistance.
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页码：3214 / 3219
页数：5
相关论文
共 212 条
[1]  
Lewis N S(2006)undefined Proc. Natl. Acad. Sci. 103 15729-undefined
[2]  
Nocera D G(1981)undefined Acc. Chem. Res. 14 376-undefined
[3]  
Graetzel M(1998)undefined Science 280 425-undefined
[4]  
Khaselev O(2010)undefined Chem. Rev. 110 6446-undefined
[5]  
Turner J A(2016)undefined Nano Lett. 16 1848-undefined
[6]  
Walter M G(2012)undefined Energy Environ. Sci. 5 8673-undefined
[7]  
Warren E L(2015)undefined Energy Environ. Sci. 8 855-undefined
[8]  
McKone J R(2014)undefined J. Mater. Chem. A 2 18383-undefined
[9]  
Boettcher S W(2013)undefined J. Phys. Chem. B 117 15750-undefined
[10]  
Mi Q(2011)undefined Nature Mater. 10 456-undefined
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