Ternary solar cells via ternary polymer donors and third component PC71BM to optimize morphology with 13.15% efficiency

•A PCE over the 13% for ternary PSCs based on ternary polymer donor was achieved.•Morphology studies confirmed that ternaty PSC brought most appropriate phase separation.•A classical ternary strategy could significantly improve charge extraction. The third component played an increasingly significan...

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Veröffentlicht in:Solar energy 2021-07, Vol.222, p.18-26
Hauptverfasser: Liu, Xingpeng, Du, Sanshan, Fu, Zhijie, Chen, Can, Tong, Junfeng, Li, Jianfeng, Zheng, Nan, Zhang, Rongling, Xia, Yangjun
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container_end_page 26
container_issue
container_start_page 18
container_title Solar energy
container_volume 222
creator Liu, Xingpeng
Du, Sanshan
Fu, Zhijie
Chen, Can
Tong, Junfeng
Li, Jianfeng
Zheng, Nan
Zhang, Rongling
Xia, Yangjun
description •A PCE over the 13% for ternary PSCs based on ternary polymer donor was achieved.•Morphology studies confirmed that ternaty PSC brought most appropriate phase separation.•A classical ternary strategy could significantly improve charge extraction. The third component played an increasingly significant role in polymer solar cells (PSCs), especially for the morphological impact. Here, we use a ternary polymer donor (TBFCl50-BDD) and organic small molecule acceptor (BTP-4F) as the main material and introduce a third component (PC71BM) to enhance the morphology of the photoactive layer and result in improved device performance. The TBFCl50-BDD:BTP-4F based PSCs only exhibited an efficiency of 10.58%, while The power conversion efficiency of ternary device (TBFCl50-BDD:BTP-4F:PC71BM) reached 13.15%. Importantly, the introduction of PC71BM can not only improve the morphology of the active layer and promote more efficient exciton transport, but also influence the molecular arrangement for better crystallization performance. This work offers an effective method for optimization of the morphology to enhance the properties of PSCs.
doi_str_mv 10.1016/j.solener.2021.05.011
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The third component played an increasingly significant role in polymer solar cells (PSCs), especially for the morphological impact. Here, we use a ternary polymer donor (TBFCl50-BDD) and organic small molecule acceptor (BTP-4F) as the main material and introduce a third component (PC71BM) to enhance the morphology of the photoactive layer and result in improved device performance. The TBFCl50-BDD:BTP-4F based PSCs only exhibited an efficiency of 10.58%, while The power conversion efficiency of ternary device (TBFCl50-BDD:BTP-4F:PC71BM) reached 13.15%. Importantly, the introduction of PC71BM can not only improve the morphology of the active layer and promote more efficient exciton transport, but also influence the molecular arrangement for better crystallization performance. 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subjects Charge transport
Crystallization
Cytology
Efficiency
Energy conversion efficiency
Excitons
Morphology
Optimization
Photovoltaic cells
Polymer solar cells
Polymers
Solar cells
Solar energy
Ternary
title Ternary solar cells via ternary polymer donors and third component PC71BM to optimize morphology with 13.15% efficiency
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