New Pressure Technique with Teflon for Dye-Sensitized Solar Cells

Abstract

This paper presents a new pressure technique using Teflon film to solve the peeling of TiO₂ films from a working electrode of dye-sensitized solar cell (DSC), where such problem happens when the traditional pressure technique is applied. The experimental resultsshowed that the TiO₂ films prepared using the new technique have consistent transparency, which is suitable for DSC. Moreover, there is no evidence of peeling off of the TiO₂ films. The conversion efficiency of a solar cell prepared using the new pressure technique was 1.78%, while that of a solar cell not prepared using the new pressure technique was 0.43%. The quantum efficiency measurements showed a peak at around 350 nm. The technique is expected to help increase the conversion efficiency by improving the quality of TiO₂ films.