Citation: Hai-yang Song, Hui Tong, Zhi-yuan Xie, Li-xiang Wang, Fo-song Wang. SYNTHESIS, CHARACTERIZATION AND SOLAR CELL APPLICATION OF A D-A COPOLYMER WITH CYCLOPENTADITHIOPHENE AND FLUORENE AS DONOR UNITS[J]. Chinese Journal of Polymer Science, ;2013, 31(8): 1117-1126. doi: 10.1007/s10118-013-1302-z shu

SYNTHESIS, CHARACTERIZATION AND SOLAR CELL APPLICATION OF A D-A COPOLYMER WITH CYCLOPENTADITHIOPHENE AND FLUORENE AS DONOR UNITS

Received Date: 18 September 2012
Revised Date: 30 October 2012

Fund Project: This work was financially supported by the 973 Project (Nos. 2009CB623601 and 2009CB930603), the Science Fund for Creative Research Groups (No. 20921061), and the National Natural Science Foundation of China (Nos. 51173179, 20904055 and 21074130).

In this paper, a new D-A copolymer, PFDBCPDT, which consists of benzo-2,1,3-thiadiazole as acceptor units and cyclopentadithiophene and fluorene as donor units, was synthesized. The thermal, electrochemical, photophysical and photovoltaic properties of PFDBCPDT were studied. PFDBCPDT showed a low optical band gap of 1.84 eV, and relatively low HOMO level of -5.69 eV. The best device performance was obtained by PFDBCPDT/PC61BM (1:3) with 0.5 vol% DIO. The device exhibited a power conversion efficiency of 3.06%, with a relatively high open circuit voltage of 0.87 eV.
- Polymer solar cell,
- Copolymerization,
- Fluorene,
- Cyclopentadithiophene,
- Conjugated polymers
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