The effect of anchoring group number on the performance of dye-sensitized solar cells
作者:Huixia Shang、Yanhong Luo、Xiaozhi Guo、Xiaoming Huang、Xiaowei Zhan、Kejian Jiang、Qingbo Meng
DOI:10.1016/j.dyepig.2010.03.034
日期:2010.11
Novel dyes comprising a triphenylamine donor, thiophene conjugated bridge and different numbers of anchor groups (cyanoacrylic acid acceptor) were synthesized and employed as photosensitizers in dyesensitized solar cells. The absorbance of the dyes in solution was red shifted and the first oxidation potential decreased with increasing butoxy group:anchor group ratio. Solar cells based on the dyes exhibited energy conversion efficiencies of 6.7-7.4% at 100 mW cm(-2). Increasing butoxy group:anchor group ratio resulted in higher open-circuit voltage and higher efficiency. (C) 2010 Elsevier Ltd. All rights reserved.