Investigation of Mechanisms of Enhanced Open-Circuit Photovoltage of Dye-Sensitized Solar Cells Based the Electrolyte Containing 1-Hexyl-3-Methylimidazolium Iodide
WANG Miao1,2, ZHANG Qing-Li3, WENG Yu-Xiang3, LIN Yuan1, XIAO Xu-Rui1
1Key Laboratory of Photochemistry, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080
2Graduate School of Chinese Academy of Sciences, Beijing 100080
3Institute of Physics, Chinese Academy of Sciences, Beijing 100080
Investigation of Mechanisms of Enhanced Open-Circuit Photovoltage of Dye-Sensitized Solar Cells Based the Electrolyte Containing 1-Hexyl-3-Methylimidazolium Iodide
WANG Miao1,2;ZHANG Qing-Li3;WENG Yu-Xiang3;LIN Yuan1;XIAO Xu-Rui1
1Key Laboratory of Photochemistry, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080
2Graduate School of Chinese Academy of Sciences, Beijing 100080
3Institute of Physics, Chinese Academy of Sciences, Beijing 100080
Abstract： The open-circuit photovoltage is improved by adding 1-hexyl-3-methylimidazolium iodide (HMImI) into the electrolyte. To investigate the mechanisms of the increase of the open-circuit photovoltage, we take the Mott--Schottky analysis and time-resolved mid-infrared absorption spectroscopy to study the band edge movement of TiO2 and the rate of back electron transfer, respectively. The results indicate that the negative shift of the conduction band of TiO2 is a predominant factor to increase the open-circuit photovoltage for the electrolyte containing HMImI.
WANG Miao;ZHANG Qing-Li;WENG Yu-Xiang;LIN Yuan;XIAO Xu-Rui. Investigation of Mechanisms of Enhanced Open-Circuit Photovoltage of Dye-Sensitized Solar Cells Based the Electrolyte Containing 1-Hexyl-3-Methylimidazolium Iodide[J]. 中国物理快报, 2006, 23(3): 724-727.
WANG Miao, ZHANG Qing-Li, WENG Yu-Xiang, LIN Yuan, XIAO Xu-Rui. Investigation of Mechanisms of Enhanced Open-Circuit Photovoltage of Dye-Sensitized Solar Cells Based the Electrolyte Containing 1-Hexyl-3-Methylimidazolium Iodide. Chin. Phys. Lett., 2006, 23(3): 724-727.
2006, Vol. 23 
