Simultaneous enhanced efficiency and thermal stability in organic solar cells from a polymer acceptor additive

Wenyan Yang, Zhenghui Luo, Rui Sun, Jie Guo, Tao Wang, Yao Wu, Wei Wang, Jing Guo, Qiang Wu, Mumin Shi, Hongneng Li, Chuluo Yang and Jie Min ()
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Wenyan Yang: Wuhan University
Zhenghui Luo: Wuhan University
Rui Sun: Wuhan University
Jie Guo: Wuhan University
Tao Wang: Wuhan University
Yao Wu: Wuhan University
Wei Wang: Wuhan University
Jing Guo: Wuhan University
Qiang Wu: Wuhan University
Mumin Shi: Wuhan University
Hongneng Li: Wuhan University
Chuluo Yang: Wuhan University
Jie Min: Wuhan University

Nature Communications, 2020, vol. 11, issue 1, 1-10

Abstract: Abstract The thermal stability of organic solar cells is critical for practical applications of this emerging technology. Thus, effective approaches and strategies need to be found to alleviate their inherent thermal instability. Here, we show a polymer acceptor-doping general strategy and report a thermally stable bulk heterojunction photovoltaic system, which exhibits an improved power conversion efficiency of 15.10%. Supported by statistical analyses of device degradation data, and morphological characteristics and physical mechanisms study, this polymer-doping blend shows a longer lifetime, nearly keeping its efficiency (t = 800 h) under accelerated aging tests at 150 oC. Further analysis of the degradation behaviors indicates a bright future of this system in outer space applications. Notably, the use of polymer acceptor as a dual function additive in the other four photovoltaic systems was also confirmed, demonstrating the good generality of this polymer-doping strategy.

Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-14926-5

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DOI: 10.1038/s41467-020-14926-5

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