Synthesis and photovoltaic properties of a solution-processable organic molecule containing dithienylbenzotriazole and triphenylamine

被引：5
作者：
Liu, Bo [1 ,2 ]
Zou, Ying-ping [1 ]
Long, Mengqiu [3 ]
He, Yue-hui [2 ]
Zhong, Hong [1 ]
Li, Yong-fang [4 ]
机构：
[1] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China
[2] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China
[3] Cent S Univ, Sch Phys & Elect, Changsha 410083, Peoples R China
[4] Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
来源：
SYNTHETIC METALS | 2012年 / 162卷 / 7-8期
基金：
中国博士后科学基金;
关键词：
Organic solar cells; Solution processable; Dithienylbenzotriazole; Triphenylamine; Heck cross-coupling reaction; Power conversion efficiency; HETEROJUNCTION SOLAR-CELLS; COPOLYMERS; BENZOTHIADIAZOLE; CORE;
D O I：
10.1016/j.synthmet.2012.02.012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new solution-processable organic small molecule, namely, TPA-DTBTz-TPA with triphenylamine (TPA) as electron donor and dithienylbenzotriazole (DTBTz) as electron acceptor was synthesized by a Heck cross-coupling reaction, and characterized by H-1 NMR, TGA, UV-vis absorption, and cyclic voltammetry. The compound was found to be easily soluble in common organic solvents, such as chloroform, tetrahydrofuran and chlorobenzene with excellent film forming properties. TPA-DTBTz-TPA film exhibits an absorption band from 300 to 620 nm. The organic solar cells based on a blend of TPA-DTBTz-TPA and PC60BM (1:2, w/w) show a power conversion efficiency (PCE) of 0.93% with a short circuit current density of 4.43 mA/cm(2) and an open circuit voltage of 0.74V, under the illumination of AM 1.5, 100 mW/cm(2). (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：630 / 635
页数：6
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