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J Nanosci Nanotechnol. 2012 Jan;12(1):662-7.

Properties of dye-sensitized solar cells with TiO2 passivating layers prepared by electron-beam evaporation.

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1
Department of Electrical Engineering, Kyungwon University, San 65 Bokjeong-Dong, Sujeong-Gu, Seongnam, Gyeonggi-Do 461-701, Korea.

Abstract

The aim of this work is to prevent back transfer of electrons due to direct contact between the electrolyte and the FTO glass substrate using a TiO2 passivating layer. The TiO2 passivating layer was deposited on FTO glass by e-beam evaporation. The TiO2 film was prepared with different deposition rates. The specific surface area was reduced with increasing deposition rate. The nanoporous TiO2 upper layer was coated by screen-printing on the TiO2 passivating layer prepared by e-beam evaporation. The optical transmittance and absorbance of the TiO2 films depend on the morphology of the TiO2 passivating layer. The dye-sensitized solar cells influenced the surface morphology of the TiO2 passivating layer. The dye-sensitized solar cell using the TiO2 passivating layer recorded a maximum conversion efficiency of 4.93% due to effective prevention of the electron recombination to the electrolyte.

PMID:
22524036
[Indexed for MEDLINE]
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