Preparation and Characterization of Nanocrystalline Cu2O/TiO2 Heterojunction Film Electrode

doi:10.3724/SP.J.1077.2006.00453

Abstract

Abstract:

TiO₂ film; heterojunction electrode; photoelectrochemistryThis paper introduced the electrochemical deposition of Cu₂O thin films on TiO₂ films by cathodic reduction to form p-Cu₂O/n-TiO₂ heterostructure electrode. The effects of bath temperature on film thickness, purity and morphology of Cu₂O films were studied. Pure spherically shaped Cu₂O grains with 40～50nm diameter were obtained. It is found that annealing at 200℃ can improve the spectral transmittance of the Cu₂O film and the film has a band gap of 2.06eV. The measurements of photoelectrochemical behavior of the nanocrystalline p-Cu₂O/n-TiO₂heterostructure electrode show that such heterostructure electrode produces strong n-type spectral response and can improve the photoelectron conversion efficiency.

Key words: TiO2 film, heterojunction electrode, photoelectrochemistry

CLC Number:

TANG Yi-Wen,CHEN Zhi-Gang,ZHANG Li-Sha,JIA Zhi-Yong,ZHANG Xin. Preparation and Characterization of Nanocrystalline Cu₂O/TiO₂ Heterojunction Film Electrode[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2006.00453.

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Preparation and Characterization of Nanocrystalline Cu₂O/TiO₂ Heterojunction Film Electrode

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