Preparation of TiO2 Electrode for Dye-Sensitized Solar Cell and the Effect of Electrolyte

doi:10.7517/j.issn.1674-0475.2008.01.54

Imaging Science and Photochemistry ›› 2008, Vol. 26 ›› Issue (1): 54-59.DOI: 10.7517/j.issn.1674-0475.2008.01.54

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Preparation of TiO₂ Electrode for Dye-Sensitized Solar Cell and the Effect of Electrolyte

LI Sheng-jun^1,2, LIN Yuan², YANG Shi-wei¹, CHEN Jin-mao², XIAO Xu-rui²

1. College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, Heilongjiang, P. R. China;
2. Key Laboratory of Photochemistry of Center of Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China

Received:2007-04-02 Revised:2007-06-18 Online:2008-01-23 Published:2008-01-23

Abstract

Abstract: Nano-crystalline TiO₂ film was prepared by combining the sol-gel and hydrothermal process.The crystal type of the TiO₂ film was identified as anatase.In the ethylene carbonate (EC)/ propylene carbonate (PC) electrolyte system,the effect of the content of I₂ and KI was studied.The results showed that the photocurrent increased at first and decreased subsequently with the increasing of I₂ content in the electrolyte,but the changes were not evident.At the same time,the dark current was elevated,and as a result,the open-circuit photovoltage (V_OC) was reduced.When the electrolyte system contained few KI,the short-circuit photocurrent could be enhanced by the addition of more KI in the electrolyte.When the content of KI was higher than 0.2 mol/L,this change slowed down.The mechanism of these effects had also been explored.

Key words: dye-sensitized solar cell, TiO₂ film electrode, electrolyte system

CLC Number:

LI Sheng-jun, LIN Yuan, YANG Shi-wei, CHEN Jin-mao, XIAO Xu-rui. Preparation of TiO₂ Electrode for Dye-Sensitized Solar Cell and the Effect of Electrolyte[J]. Imaging Science and Photochemistry, 2008, 26(1): 54-59.

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Preparation of TiO₂ Electrode for Dye-Sensitized Solar Cell and the Effect of Electrolyte

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