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http://dx.doi.org/10.14478/ace.2011.22.5.461

Electrochemical Characterization of Fluorine Doped TiO2 Dye-Sensitized Solar Cells  

Lee, Sung Kyu (Department of Fine Chemical Engineering and Applied Chemistry, BK21-E2M, Chungnam National University)
Im, Ji Sun (Department of Fine Chemical Engineering and Applied Chemistry, BK21-E2M, Chungnam National University)
Lee, Young-Seak (Department of Fine Chemical Engineering and Applied Chemistry, BK21-E2M, Chungnam National University)
Publication Information
Applied Chemistry for Engineering / v.22, no.5, 2011 , pp. 461-466 More about this Journal
Abstract
In this study, the fluorine doped $TiO_2$ was prepared as a photoelectrode in order to improve the efficiency of dye-sensitized solar cells and estimated the electrochemical characterizations. The energy conversion efficiency of the prepared dye-sensitized solar cells using fluorine doped $TiO_2$ was calculated from a current-voltage curve. The efficiency of prepared dye-sensitized solar cells was improved by about maximum three times by F-doping on $TiO_2$. It was suggested that the efficiency of dye-sensitized solar cells was improved by hybrid semiconductors of $TiO_2/TiOF_2$ in photoelectrode based on reduced $TiOF_2$ energy level via fluorine doping. It can be confirmed that the electron transport was faster but the electron recombination was slower by doping fluorine on $TiO_2$ in photoelectrode through intensity-modulated photocurrent spectroscopy and intensity-modulated photovoltage spectroscopy analysis.
Keywords
dye-sensitized solar cells; fluorine doping; electron transport; electron lifetime;
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