The performances of the mercurochrome-sensitized composite semiconductor photoelectrochemical cells based on TiO2/SnO2 and ZnO/SnO2 composites

Mercurochrome-sensitized composite TiO2/SnO2 and ZnO/SnO2 photoelectrochemical cells (DSC) have been fabricated from the mixture of the SnO2 particles and the semiconductor colloid (TiO2, ZnO). The influence of the mixed ratio on the performances of the composite semiconductor photoelectrochemical c...

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Bibliographic Details
Published in:Thin solid films 2004-12, Vol.468 (1-2), p.291-297
Main Authors: Liu, Zhaoyue, Pan, Kai, Zhang, Qinglin, Liu, Min, Jia, Ruokun, Lü, Qiang, Wang, Dejun, Bai, Yubai, Li, Tiejin
Format: Article
Language:English
Subjects:
Applied sciences
Chemistry
Electrochemistry
Electrodes: preparations and properties
Energy
Exact sciences and technology
General and physical chemistry
Natural energy
Photoelectric conversion: solar cells and arrays
Photovoltaic conversion
Solar cells. Photoelectrochemical cells
Solar energy
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Summary:Mercurochrome-sensitized composite TiO2/SnO2 and ZnO/SnO2 photoelectrochemical cells (DSC) have been fabricated from the mixture of the SnO2 particles and the semiconductor colloid (TiO2, ZnO). The influence of the mixed ratio on the performances of the composite semiconductor photoelectrochemical cells was studied. Comparing the composite TiO2/SnO2 and ZnO/SnO2 cells with the corresponding TiO2 and ZnO cells, the incident photon-to-current conversion efficiency of the composite cells was improved greatly. The photovoltage spectra (SPS) indicated that the dye molecule was adsorbed mainly by the TiO2 and ZnO particles respectively in the composite cells. The energy barriers between the different semiconductors contributed to the improvement of the short-circuit photocurrent. The possible transport mechanism of the photogenerated electrons in composite cells was percolation through the SnO2 particles.
ISSN:0040-6090
1879-2731
DOI:10.1016/j.tsf.2004.05.033