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http://dx.doi.org/10.9713/kcer.2011.49.2.175

Electrochemical Characterization of Hybrid Semiconductor-Based Dye-Sensitized Solar Cells  

Lee, Sung-Kyu (Department of Fine Chemical Engineering and Applied Chemistry, BK21-E2M, Chungnam National University)
Jeong, Eui-Gyung (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
Korean Chemical Engineering Research / v.49, no.2, 2011 , pp. 175-180 More about this Journal
Abstract
In this study, the $TiO_{2}/V_{2}O_{5}$ hybrid semiconductors were prepared by mixing $TiO_{2}$ and $V_{2}O_{5}$, and a subsequent smash process to reduce the recombination of electron and improve the efficiency of solar cells. Dye-sensitized solar cells were constructed using the resultant hybrid semiconductor, and their electrochemical properties were also investigated. The photocurrent-voltage curve obtained with the cells indicated a significant increase in the efficiency from 2.9 to 5.7% by the factor of 2 compared to the result obtained only with $TiO_{2}$. It is believed that the introduction of $V_{2}O_{5}$ effectively transport electrons in the $TiO_{2}$ conduction band to FTO glass and suppress recombination with the dye and/or the electrolyte, thus yielding an efficient performance of the dye sensitized solar cell. The impedance values also indicated a decrease of resistance in the interface of $TiO_{2}$/dye/electrolyte supporting the constructive contributions of the smashed $TiO_{2}/V_{2}O_{5}$ hybrid semiconductors for the efficiency.
Keywords
$TiO_{2}$; $V_{2}O_{5}$; Smash; Energy Conversion Efficiency; Dye-Sensitized Solar Cell;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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