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Surface passivation of titanium dioxide via an electropolymerization method to improve the performance of dye-sensitized solar cells
, Article RSC Advances ; Volume 6, Issue 15 , 2016 , Pages 12537-12543 ; 20462069 (ISSN) ; Khoshroo, A ; Taghavinia, N ; Hosseinzadeh, L ; Sharif University of Technology
Royal Society of Chemistry
2016
Abstract
In dye-sensitized solar cells recombination reactions at the TiO2 photoanode with the electrolyte interface plays a critical role in cell efficiency. Recombination of injected electrons in the TiO2 with acceptors in the electrolyte usually occurs on uncovered areas of TiO2 surfaces. In this work, we report electropolymerization of polymer films on nanoporous TiO2 electrode surfaces using an ionic liquid as the growth medium. The choice of ionic liquid as the growth medium for this study is based on the insolubility of dye N719 in this electrolyte, thus avoiding dye molecule detachment from the TiO2 photoanode surface over the entire potential range investigated during the...