期刊
KOREAN JOURNAL OF CHEMICAL ENGINEERING
卷 34, 期 12, 页码 3214-3219出版社
KOREAN INSTITUTE CHEMICAL ENGINEERS
DOI: 10.1007/s11814-017-0225-8
关键词
Cu2O; Zn-doped Cu2O; Photocathode; Water Splitting; Photoelectrochemistry
资金
- National Research Foundation (NRF) - Korean government [NRF-2017R1A2B2011066]
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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