Dye-sensitized solar cells based on functionalized truxene structure

被引：4
作者：
Wu, Fei [1 ]
Liu, Jian-Lin [1 ]
Lee, Lawrence Tien Lin [2 ]
Chen, Tao [2 ]
Wang, Min [1 ]
Zhu, Lin-Na [1 ]
机构：
[1] Southwest Univ, Fac Mat & Energy, Chongqing 400715, Peoples R China
[2] Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China
来源：
CHINESE CHEMICAL LETTERS | 2015年 / 26卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Truxene; Dye-sensitized solar cell; Sensitizer; Photovoltaic properties; CONVERSION EFFICIENCY; ORGANIC SENSITIZERS; ACCEPTOR; IMPROVEMENT;
D O I：
10.1016/j.cclet.2015.03.008
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Three new metal-free organic dyes (TX1, TX2 and TX3) based on truxene core structure, with triphenylamine as the electron donor, thiophene as the pi spacers, and cyanoacetic acid or rhodanine-3-acetic acid as the electron acceptor are designed and synthesized. Their UV-vis absorption spectra, electrochemical and photovoltaic properties were investigated. The cyanoacrylic acid is verified to be a better acceptor unit (meanwhile the anchoring group) compared to the rhodanine-3-acetic acid. And also, two anchoring groups in TX2 could provide stronger adsorption ability on the TiO2 surface. In addition, the EIS results indicate a slower charge recombination processes for TX2. As a result, dye TX2 bearing two cyanoacetic acid outperforms the other two dyes, exhibiting the photo-conversion efficiency of 2.64%, with J(SC) = 5.09 mA cm(-2), V-OC = 729 mV, FF = 71.1. (C) 2015 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：955 / 962
页数：8
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