Citation: YANG Dalei, LI Zelin, ZHAO Xiaoli, SUN Zhaoyan, YANG Xiaoniu. Synthesis and Characterization of a High Hole Mobility Material for Polymer Solar Cells[J]. Chinese Journal of Applied Chemistry, ;2016, 33(12): 1375-1382. doi: 10.11944/j.issn.1000-0518.2016.12.160343 shu

Synthesis and Characterization of a High Hole Mobility Material for Polymer Solar Cells

YANG Dalei ^a,b,c ,
LI Zelin ^a,b,c ,
ZHAO Xiaoli ^a,b,, ,
SUN Zhaoyan ^a ,
YANG Xiaoniu ^a,b,,

1.
a State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
2.
b Polymer Composites Engineering Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
3.
c University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author: ZHAO Xiaoli, YANG Xiaoniu,
Received Date: 26 August 2016
Available Online: 26 September 2016
Fund Project:

One of the important prerequisites of large-area production is that the power conversion efficiency of polymer solar cells is insensitive to the active layer thickness. A novel donor-acceptor copolymer, named poly[N-(2-hexyldecyl)-2,2'-bithiophene-3,3'-dicarboximide-alt-5,5-(2,5-bis(3-(decyloxy)thiophene-2-yl)-thiophene)](PBTI3T-O),with a moderate band gap has been designed and synthesized. PBTI3T-O shows a broad absorption range of 400~720 nm and good solubility in chlorobenzene(CB). The hole mobility of PBTI3T-O and[6,6]-phenyl-C71-butyric acid methyl ester(PC₇₁BM) blend is 5.90×10^-3 cm²/(V·s), which is higher than those of most other materials. The excellent charge transport property leads to a power conversion efficiency of 5.56% with a thick active layer of 237 nm. Furthermore, PBTI3T-O based device retains 97% of the highest efficiency with a thickness of ca. 300 nm, indicating its potential application in large-area production.
- polymer solar cells,
- donor-acceptor copolymer,
- active layer,
- thick film
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