Efficiency of electron injection in dye-sensitized semiconductor films

被引：4
|
作者：
Katoh R. [1 ]
Furube A. [1 ]
机构：
[1] National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, Tsukuba, Ibaraki 305-8565
来源：
Key Engineering Materials | 2011年 / 451卷
关键词：
Dye-sensitized solar cells; Electron injection efficiency; Free energy change; Transient absorption spectroscopy;
D O I：
10.4028/www.scientific.net/KEM.451.79
中图分类号：
学科分类号：
摘要：
The efficiency of electron injection (Φinj) in dye-sensitized nanocrystalline films has been studied by means of transient absorption spectroscopy. We observed Φinj of nearly unity for N3 dye adsorbed on nanocrystalline TiO2 films (N3/TiO2). We examined the effects of various experimental conditions, such as light intensity, excitation wavelength, and presence of additives (4-tert- butylpyridine, tBP and Li ions), on Φinj. We also used various semiconductors and sensitizer dyes to study the effect of free energy change (ΔG) on Φinj. These results give us new insights for developing high-performance solar cell devices. © 2011 Trans Tech Publications, Switzerland.
引用
收藏
页码：79 / 95
页数：16
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