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- W2505633645 abstract "Coating n-type buffer and protective layers on Cu2O may be an effective means to improve the photoelectrochemical (PEC) water-splitting performance of Cu2O-based photocathodes. In this letter, the functions of the buffer layer and protective layer on Cu2O are examined. It is found that a Ga2O3 buffer layer can form a buried junction with Cu2O, which inhibits Cu2O self-reduction as well as increases the photovoltage through a small conduction band offset between the two semiconductors. The introduction of a TiO2 thin protective layer not only improves the stability of the photocathode but also enhances the electron transfer from the photocathode surface into the electrolyte, thus resulting in an increase in photocurrent at positive potentials. These results show that the selection of overlayers with appropriate conduction band positions provides an effective strategy for obtaining a high photovoltage and high photocurrent in PEC systems." @default.
- W2505633645 created "2016-08-23" @default.
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- W2505633645 date "2016-07-18" @default.
- W2505633645 modified "2023-10-12" @default.
- W2505633645 title "Simultaneous enhancement of photovoltage and charge transfer in Cu2O-based photocathode using buffer and protective layers" @default.
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- W2505633645 doi "https://doi.org/10.1063/1.4959098" @default.
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