Synergistic Effect of Chlorination and Selenophene: Achieving Elevated Solar Conversion in Highly Aggregated Systems

Zhong, Xiaowei1,2; Chen, Hui1,2; Wang, Meijing1,2; Gan, Shenglong3; He, Qiming4; Chen, Wei3,4; He, Feng1,2

2019-03-26

10.1021/acs.macromol.8b02445

MACROMOLECULES   影响因子和分区

0024-9297

1520-5835

Chlorination and selenophene were used to develop benzothiadiazole-based polymers for high-performance polymer solar cells (PSCs). The introduction of selenophene can increase crystallinity due to the metalloid nature of selenium and thus facilitate charge transport. Chlorination can tune the energy levels and induce strong aggregation due to its unique features. A non-chlorinated polymer with selenophene, PBT3TSe, shows a highly crystalline structure and a dominant face-on orientation, consequently attaining a high short-circuit current (J(SC)). Chlorinated PBT3TClSe displays synergy between the advantages of chlorination and selenophene to achieve elevated photovoltaic performance, with a power conversion efficiency (PCE) approaching 9.89% in PC71BM-based devices. Interestingly, chlorination has an important influence on morphology of the polymer and polymer blend films, resulting in a severe aggregation and mixed face-on and edge-on orientation in the blend film. But the sufficient intermingling of donor and acceptor and the closer distances between molecules from the introduction of the chlorine and selenophene offset their morphological inferiority to achieve higher solar conversion.

SCI ; EI

英语

NI期刊

第一 ; 通讯

U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences[DE-AC02-06CH11357]

Polymer Science

Polymer Science

WOS:000462950300017

AMER CHEMICAL SOC

20191406721514

Chlorination ; Crystallinity ; Display devices ; Polymer films ; Polymer solar cells

Solar Cells:702.3 ; Computer Peripheral Equipment:722.2 ; Chemical Reactions:802.2 ; Polymeric Materials:815.1

CHEMISTRY

Web of Science

1.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Shenzhen Grubbs Inst, Shenzhen 518055, Peoples R China
3.Argonne Natl Lab, Mat Sci Div, 9700 Cass Ave, Lemont, IL 60439 USA
4.Univ Chicago, Inst Mol Engn, 5640 South Ellis Ave, Chicago, IL 60637 USA

Zhong, Xiaowei,Chen, Hui,Wang, Meijing,et al. Synergistic Effect of Chlorination and Selenophene: Achieving Elevated Solar Conversion in Highly Aggregated Systems[J]. MACROMOLECULES,2019,52(6):2393-2401.

Zhong, Xiaowei.,Chen, Hui.,Wang, Meijing.,Gan, Shenglong.,He, Qiming.,...&He, Feng.(2019).Synergistic Effect of Chlorination and Selenophene: Achieving Elevated Solar Conversion in Highly Aggregated Systems.MACROMOLECULES,52(6),2393-2401.

Zhong, Xiaowei,et al."Synergistic Effect of Chlorination and Selenophene: Achieving Elevated Solar Conversion in Highly Aggregated Systems".MACROMOLECULES 52.6(2019):2393-2401.