The effects of pyridine derivative additives on interface processes at nanocrystalline TiO2 thin film in dye-sensitized solar cells

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	The effects of pyridine derivative additives on interface processes at nanocrystalline TiO2 thin film in dye-sensitized solar cells
	Yin, X ; Zhao, H ; Chen, L ; Tan, W ; Zhang, J ; Weng, Y ; Shuai, Z ; Xiao, X ; Zhou, X ; Li, X ; Lin, Y
刊名	SURFACE AND INTERFACE ANALYSIS
	2007
卷号	39 期号:10 页码:809
ISSN号	0142-2421
中文摘要	2-Methyl-4-propoxypyridine, a new pyridine derivative, has been synthesized and used as an additive in the liquid electrolyte of dye-sensitized solar cells (DSSCs). Compared with 2-methylpyridne and 4-tertpyridine, they were employed to study the influence of the pyridine derivative additives on the rate of recombination at the electrode/dye/electrolyte interfaces and band edge shift of TiO2, which were measured by time-resolved mid-infrared absorption spectroscopy and Mott-Schottky analysis, respectively. It was found that the rate of interfacial charge recombination was enhanced when the pyridine derivative additives were present in the electrolyte. Meanwhile, the additives caused a negative shift of the band edge. However, the net effect of pyridine derivative addition was to improve the open-circuit photovoltage according to the photoelectrochernical measurement, indicating that negative shift of conduction band of TiO2 was a predominant factor in improving the open-circuit photovoltage. Also, the result was strongly supported by the dark current measurement. Therefore, it provides a microscopic account for the function of the pyridine derivative additives on the open-circuit photovoltage enhancement of the DSSCs. Furthermore, the decrease of the short-circuit photocurrent of the cells was also attributed to the slower dye regeneration due to the addition of additives from the results of cyclic voltammetry measurement. Copyright (C) 2007 John Wiley & Sons, Ltd.
收录类别	SCI
公开日期	2013-09-23
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/45104]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Yin, X,Zhao, H,Chen, L,et al. The effects of pyridine derivative additives on interface processes at nanocrystalline TiO2 thin film in dye-sensitized solar cells[J]. SURFACE AND INTERFACE ANALYSIS,2007,39(10):809.
APA	Yin, X.,Zhao, H.,Chen, L.,Tan, W.,Zhang, J.,...&Lin, Y.(2007).The effects of pyridine derivative additives on interface processes at nanocrystalline TiO2 thin film in dye-sensitized solar cells.SURFACE AND INTERFACE ANALYSIS,39(10),809.
MLA	Yin, X,et al."The effects of pyridine derivative additives on interface processes at nanocrystalline TiO2 thin film in dye-sensitized solar cells".SURFACE AND INTERFACE ANALYSIS 39.10(2007):809.