Synthesis, characterization and photovoltaic properties of benzo[1,2-b:4,5-b′]dithiophene-bridged molecules

被引：11
|
作者：
Liu, Xinli [1 ,2 ]
Li, Shusheng [3 ]
Li, Jinhua [4 ]
Wang, Jian [5 ]
Tan, Zhan'ao [3 ]
Yan, Feng [4 ]
Li, Hua [2 ,6 ]
Lo, Yih Hsing [7 ]
Chui, Chung-Hin [8 ]
Wong, Wai-Yeung [2 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
[2] Hong Kong Baptist Univ, Dept Chem, Partner State Key Lab Environm & Biol Anal, Inst Mol Funct Mat, Kowloon Tong, Hong Kong, Peoples R China
[3] Hong Kong Baptist Univ, Inst Adv Mat, Kowloon Tong, Hong Kong, Peoples R China
[4] North China Elect Power Univ, Beijing Key Lab Energy Secur & Clean Utilizat, State Key Lab Alternate Elect Power Syst Renewabl, Beijing 102206, Peoples R China
[5] Hong Kong Polytech Univ, Dept Appl Phys, Hong Kong, Hong Kong, Peoples R China
[6] Jilin Univ, State Key Lab Theoret & Computat Chem, Inst Theoret Chem, Changchun 130023, Peoples R China
[7] Minzu Univ China, Coll Life & Environm Sci, Beijing 100081, Peoples R China
[8] Minzu Univ China, Beijing Engn Res Ctr Food Environm & Publ Hlth, Beijing 100081, Peoples R China
来源：
RSC ADVANCES | 2014年 / 4卷 / 108期
关键词：
PROCESSED SMALL-MOLECULE; ALKYL CYANOACETATE GROUPS; OPEN-CIRCUIT VOLTAGE; POLYMER SOLAR-CELLS; CONJUGATED POLYMERS; PERFORMANCE; EFFICIENCY; BENZODITHIOPHENE; UNIT; DIKETOPYRROLOPYRROLE;
D O I：
10.1039/c4ra10081f
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Four new acceptor-donor-acceptor based organic small molecules with the benzo[1,2-b:4,5-b']dithiophene (BDT) unit as the central donor group, benzothiadiazole (BT) or fluoro-substituted benzothiadiazole as the acceptor, and different end-capping groups (BTBDT1-BTBDT4) have been synthesized and tested for solution-processed bulk-heterojunction organic solar cells. The absorption spectra, electronic energy levels, hole mobilities and solar cell performance of these compounds were investigated. All compounds show broad absorption in the visible range. The PCE of the solar cell device based on BTBDT3/PC71BM (1 : 2, w/w) reached 3.91% with a J(SC) of 10.08 mA cm(-2), a V-OC of 0.90 V and a FF of 0.43, under illumination of AM 1.5G, 100 mW cm(-2).
引用
收藏
页码：63260 / 63267
页数：8
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