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Issue 65, 2018
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Wavelength dependent photochemical charge transfer at the Cu2O–BiVO4 particle interface – evidence for tandem excitation

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Abstract

The understanding of the photochemical charge transfer properties of powdered semiconductors is of relevance to artificial photosynthesis and the production of solar fuels. Here we use surface photovoltage spectroscopy to probe photoelectrochemical charge transfer between bismuth vanadate (BiVO4) and cuprous oxide (Cu2O) particles as a function of wavelength and film thickness. Optimized conditions produce a −2.10 V photovoltage under 2.5 eV (0.1 mW cm−2) illumination, which suggests the possibility of a water splitting system based on a BiVO4–Cu2O direct contact particle tandem.

Graphical abstract: Wavelength dependent photochemical charge transfer at the Cu2O–BiVO4 particle interface – evidence for tandem excitation

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Publication details

The article was received on 24 May 2018, accepted on 19 Jul 2018 and first published on 20 Jul 2018


Article type: Communication
DOI: 10.1039/C8CC04123G
Citation: Chem. Commun., 2018,54, 9023-9026
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    Wavelength dependent photochemical charge transfer at the Cu2O–BiVO4 particle interface – evidence for tandem excitation

    Z. Wu, G. Cheung, J. Wang, Z. Zhao and F. E. Osterloh, Chem. Commun., 2018, 54, 9023
    DOI: 10.1039/C8CC04123G

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