Abstract
In this study, a modified procedure is introduced which consists of multistep process for improving the structure of mesoporous TiO2 films. The films were prepared by electrophoretic deposition (EPD) on FTO (F-SnO2 coated glass). It is shown that high quality TiO2 film can be produced by multistep EPD method. The effect of EPD time on the thickness and density of the films have been investigated. The performance of dye-sensitized solar cells (DSSCs) that were fabricated by improved layer are tested under AM 1.5 simulated sunlight. Finally, the structure and effective parameters of DSSCs that were fabricated by one step and multistep EPD are investigated precisely, using electrochemical impedance spectroscopy.
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