15% Efficiency All-Polymer Solar Cells Based on a Polymer Acceptor Containing B←N Unit

Ying-Ze Zhang; Ning Wang; Ying-Hui Wang; Jun-Hui Miao; Jun Liu; Li-Xiang Wang

doi:10.1007/s10118-022-2790-5

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15% Efficiency All-Polymer Solar Cells Based on a Polymer Acceptor Containing B←N Unit

RESEARCH ARTICLE | Updated：2022-07-21

- 15% Efficiency All-Polymer Solar Cells Based on a Polymer Acceptor Containing B←N Unit
- Chinese Journal of Polymer Science Vol. 40, Issue 8, Pages: 989-995(2022)
- Affiliations：
  
  a.State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  b.School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, China
- Author bio：
  
  liujun@ciac.ac.cn
- Funds：
- DOI：10.1007/s10118-022-2790-5
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Ying-Ze Zhang, Ning Wang, Ying-Hui Wang, et al. 15% Efficiency All-Polymer Solar Cells Based on a Polymer Acceptor Containing B←N Unit. [J]. Chinese Journal of Polymer Science 40(8):989-995(2022)
DOI：

Ying-Ze Zhang, Ning Wang, Ying-Hui Wang, et al. 15% Efficiency All-Polymer Solar Cells Based on a Polymer Acceptor Containing B←N Unit. [J]. Chinese Journal of Polymer Science 40(8):989-995(2022) DOI： 10.1007/s10118-022-2790-5.

摘要

An alternating copolymer containing B←N units with low-lying energy levels and narrow bandgap is developed for all-polymer solar cells (all-PSCs). The all-PSC device using this polymer as an electron acceptor exhibits the power conversion efficiency of 15.09% and potential for large-scale preparation.

Abstract

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'-((2,Z,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.

关键词

Keywords

Organic photovoltaicAll-polymer solar cellsPolymer acceptorsBoron-nitrogen coordination bond

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