Journal of Inorganic Materials >
Preparation and Characterization of Nanocrystalline Cu2O/TiO2 Heterojunction Film Electrode
Received date: 2005-03-07
Revised date: 2005-05-09
Online published: 2006-03-20
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-TiO2 heterostructure 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
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, 2006 , 21(2) : 453 -458 . DOI: 10.3724/SP.J.1077.2006.00453
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