期刊
CHINESE JOURNAL OF POLYMER SCIENCE
卷 40, 期 8, 页码 989-995出版社
SPRINGER
DOI: 10.1007/s10118-022-2790-5
关键词
Organic photovoltaic; All-polymer solar cells; Polymer acceptors; Boron-nitrogen coordination bond
资金
- National Key Research and Development Program of China [2019YFA0705902]
- MOST
- National Natural Science Foundation of China [21875244, 22135007]
The development of new polymer acceptors is crucial for improving the power conversion efficiency of all polymer solar cells. In this study, a new polymer acceptor called PBN26 was developed, and it achieved a PCE of 15.09%, which is the highest among all-PSCs based on B <- N-based polymer acceptors at present.
The development of new polymer acceptors strongly paves the power conversion efficiency (PCE) improvement of all polymer solar cells (all-PSCs). Herein, we develop a new polymer acceptor PBN26, which is the alternating copolymer of 2,2 '-((2Z,2 ' Z)-((12,13-bis(2-octyldodecyl)-3,9-diundecyl-12,13-dihydro-[1,2,5]thiadiazolo[3,4-e]thieno[2 '',3 '':4 ',5 ']thieno[2 ',3 ':4,5]pyrrolo[3,2-g]thieno[2 ',3 ':4,5]thieno[3,2-b]indole-2,10-diyl)bis(methanylylidene))bis(3-oxo-2,3-dihydro-1 H-indene-2,1-diylidene))dimalononitrile and B <- N bridged thienylthiazole (BNTT). The optimized all-PSCs device based on PBN26 exhibits a PCE of 15.09%, which is the highest value of the all-PSCs based on B <- N-based polymer acceptors at present. Moreover, we also fabricate an all-PSC module with active area of 10 cm(2) by blade coating, which exhibits a PCE of 8.78%. These results prove that polymer acceptors containing B <- N units are promising for all-PSC device applications.
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