Block copolymer compatibilizer for efficient and stable nonfullerene organic solar cells
- Authors
- Li, Bin; Zhang, Qilin; Li, Siying; Yang, Xue; Yang, Fan; Kong, Yuxin; Li, Yuxiang; Wu, Ziang; Zhang, Weichao; Zhao, Qian; Zhang, Yuan; Yuan, Jianyu; Ma, Wanli; Woo, Han Young
- Issue Date
- 15-6월-2022
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Solid additive; Block copolymer; Nonfullerene solar cells; Morphology; Stability
- Citation
- CHEMICAL ENGINEERING JOURNAL, v.438
- Indexed
- SCIE
SCOPUS
- Journal Title
- CHEMICAL ENGINEERING JOURNAL
- Volume
- 438
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/140798
- DOI
- 10.1016/j.cej.2022.135543
- ISSN
- 1385-8947
- Abstract
- High-efficiency nonfullerene organic solar cells with long-term stability is crucial for future commercialization in the field of organic photovoltaics. Herein, we designed and synthesized a block copolymer, namely PM6-b-PTY6, containing both donor PM6 and Y6 segments in the polymer backbone. We then first demonstrated that the use of such block copolymer as a compatibilizer in high-efficiency PM6:Y6 based benchmark nonfullerene solar cells, simultaneously enhancing their power conversion efficiency and long-term stability. Detailed experimental results reveal that the addition of PM6-b-PTY6 into PM6:Y6 blend can effectively optimize carrier dynamic process, enhance donor-acceptor miscibility, and stabilize the blend morphology. Additionally, this strategy shows similar function when applied to other system like D18-Cl:Y6. As a result, enhanced efficiencies of 16.48% and 17.55% for PM6:Y6 and D18-Cl:Y6 solar cell are achieved, respectively. More importantly, the inverted PM6:Y6 devices exhibit improved stability, retaining 0.81 and 0.86 of the initial efficiency after 550 h aging under ambient and thermal stress, respectively. These results indicate that the compatible block copolymer could provide a fresh strategy to design more efficient nonfullerene organic solar cells.
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Collections - College of Science > Department of Chemistry > 1. Journal Articles
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