A High-Mobility Low-Bandgap Copolymer for Efficient Solar Cells

被引：50
|
作者：
Ding, Ping [1 ]
Chu, Cheng-Che [2 ]
Liu, Bo [3 ]
Peng, Bo [1 ]
Zou, Yingping [1 ,3 ]
He, Yuehui [3 ]
Zhou, Kechao [3 ]
Hsu, Chain-Shu [2 ]
机构：
[1] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China
[2] Natl Chiao Tung Univ, Dept Appl Chem, Hsinchu 30010, Taiwan
[3] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China
来源：
MACROMOLECULAR CHEMISTRY AND PHYSICS | 2010年 / 211卷 / 24期
基金：
中国国家自然科学基金;
关键词：
benzodithiophene; conjugated polymers; low bandgap; high mobility; polymer solar cells; PHOTOVOLTAIC PROPERTIES; POLYTHIOPHENES; POLYMERS;
D O I：
10.1002/macp.201000473
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A new high-mobility low-bandgap polymer, PBDT-DODTBT, based on benzodithiophene and 5,6-bis(octyloxy)-4,7-di(thiophen-2-yl) benzothiadiazole has been synthesized through a standard Stille coupling reaction. The polymer is soluble in common organic solvents, such as chloroform, tetrahydrofuran, and chlorobenzene and has excellent film forming properties. Preliminary studies of the copolymer showed the charge mobility as high as 7.15 x 10(-3) cm(2).V-1. s(-1) from SCLC measurement. Initial photovoltaic cells based on the composite structure of ITO/PEDOT: PSS/PBDT-DODTBT: (PC71BM)-P-alpha (1:2)/Ca/Al showed an open-circuit voltage of 0.76 V, a power conversion efficiency of 4.02%, and a short-circuit current of 8.96mA.cm(-2).
引用
收藏
页码：2555 / 2561
页数：7
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