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Electrochemical Characteristics of TiO2 Photoelectrode for DSSC Prepared by Sol-gel Method

졸겔법에 의한 DSSC 광전극의 전기화학적 특성

  • Park, A-Reum (Department of Electrical Engineering, Chonnam National University) ;
  • Jin, En Mei (Department of Electrical Engineering, Chonnam National University) ;
  • Gu, Hal-Bon (Department of Electrical Engineering, Chonnam National University)
  • Received : 2012.02.11
  • Accepted : 2012.03.07
  • Published : 2012.04.01

Abstract

In general, a photoelectrode in DSSC(dye sensitized solar cell) are fabricated by using the $TiO_2$ (Titanium dioxide) to realize high efficiency and the efficiency of DSSC is affected by the size, the shape and the property of $TiO_2$. We synthesized the crystalline $TiO_2$ by sol-gel method. In spite of many merits, only weakness for the sol-gel method is taking many process times. To solve this problem, we reduced the fabricating processes. The reduced process is the making process that is $TiO_2$ sol to $TiO_2$ powder with including of two heat treatment and two mixing. We could simplify the process by preparing $TiO_2$ sol to $TiO_2$ paste directly. As a result, DSSC fabrication process is simplified and we have obtained the efficiency best result 3.88% with $V_{OC}$=0.71 V, $J_{SC}=8.70\;mA/cm^{-2}$, and FF=62.37%, respectively.

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References

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