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Electrochemical Properties of Dye-sensitized Solar Cells Using the TiO2 Prepared by Hydrothermal Reaction

수열합성한 TiO2 분말을 이용한 염료감응형 태양전지의 전기화학적 특성

  • Na, Byung-Hee (Department of Electrical Engineering, Chonnam National University) ;
  • Zhao, Xing Guan (Department of Electrical Engineering, Chonnam National University) ;
  • Gu, Hal-Bon (Department of Electrical Engineering, Chonnam National University)
  • 나병희 (전남대학교 전기공학과) ;
  • ;
  • 구할본 (전남대학교 전기공학과)
  • Received : 2013.10.24
  • Accepted : 2013.11.20
  • Published : 2014.01.01

Abstract

In this work, according to temperature and time of hydrothermal synthesis, the electrochemical properties of $TiO_2$ particle using TTIP based on changing temperature and time in the hydrothermal synthesis were analyzed and optimized temperature and time were derived. When hydrothermal synthesis temperature and time were $200^{\circ}C$ and 1 h, respectively. The fabricated DSSC delivered the best electrochemical properties. In that case, $TiO_2$ particle size was 13.08 nm, electron transport time was $2.34{\times}10^{-3}s$ and recombination time was $4.01{\times}10^{-2}s$. The lowest impedance of $13.52{\Omega}$ and Voc, Jsc, FF is 0.70 V, $1.50mAcm^{-2}$, 65.62%, respectively and corresponding efficiency of 5.34% was considered as the optimal.

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