Application of Yb3+, Er3+-doped yttrium oxyfluoride nanocrystals in dye-sensitized solar cells
- 作者：Jiangli Wang ; Jianming Lin ; jmlin@hqu.edu.cn ; Jihuai Wu ; Miaoliang Huang ; Zhang Lan ; Yuan Chen ; Shen Tang ; Leqing Fan ; Yunfang Huang
- 关键词：Dye-sensitized solar cells ; Rare-earth ions ; Conversion luminescence ; p-Type doping
- 刊名：Electrochimica Acta
- 出版年：2012
- 期刊代码：30_00134686
- 类别：ch
- 出版时间：30 May, 2012
- 卷：70
- 期：Complete
- 页码：131-135
- 文件大小：444 K
摘要
Yb3+, Er3+-doped yttrium oxyfluoride [YOF:(Yb3+, Er3+)], acting as a luminescence medium, is introduced into the TiO2 electrode. Owing to the effect of up-conversion, it increases the photocurrent and efficiency of the DSSC. Besides, as a p-type dopant, YOF:(Yb3+, Er3+) enhances the Fermi level of TiO2 film and the photovoltage of the DSSC. When the doping amount of YOF:(Yb3+, Er3+) is 7 wt.%, the light-to-electric energy conversion efficiency of the DSSC reaches 7.217%, increasing by a factor of 1.23 compared to that of a DSSC without YOF:(Yb3+, Er3+)dopant.