Significantly Boosting Efficiency of Polymer Solar Cells by Employing a Nontoxic Halogen-Free Additive
Traditional additives like 1,8-diiodooctane and 1-chloronaphthalene were successfully utilized morphology optimization of various polymer solar cells (PSCs) in an active layer, but their toxicity brought by halogen atoms limits their corresponding large-scale manufacturing. Herein, a new nontoxic halogen-free additive named benzyl benzoate (BB) was introduced into the classic PSCs (PTB7-Th:PC71BM), and an optimal power conversion efficiency (PCE) of 9.43% was realized, while there was a poor PCE for additive free devices (4.83%). It was shown that BB additives could inhibit PC71BM's overaggregation, which increased the interface contact area and formed a better penetration path of an active layer. In addition, BB additives could not only boost the distribution of a PTB7-Th donor at the surface, beneficial to suppressing exciton recombination in inverted devices but also boost the crystallinity of a blend layer, which is conducive to exciton dissociation and charge transport. Our work effectively improved a device performance by using a halogen-free additive, which can be referential for industrialization.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2021 |
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| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:13 |
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| Enthalten in: |
ACS applied materials & interfaces - 13(2021), 9 vom: 10. März, Seite 11117-11124 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Liu, Xingpeng [VerfasserIn] |
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| Links: |
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| Themen: |
Additive |
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| Anmerkungen: |
Date Revised 15.03.2021 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1021/acsami.0c22014 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a Traditional additives like 1,8-diiodooctane and 1-chloronaphthalene were successfully utilized morphology optimization of various polymer solar cells (PSCs) in an active layer, but their toxicity brought by halogen atoms limits their corresponding large-scale manufacturing. Herein, a new nontoxic halogen-free additive named benzyl benzoate (BB) was introduced into the classic PSCs (PTB7-Th:PC71BM), and an optimal power conversion efficiency (PCE) of 9.43% was realized, while there was a poor PCE for additive free devices (4.83%). It was shown that BB additives could inhibit PC71BM's overaggregation, which increased the interface contact area and formed a better penetration path of an active layer. In addition, BB additives could not only boost the distribution of a PTB7-Th donor at the surface, beneficial to suppressing exciton recombination in inverted devices but also boost the crystallinity of a blend layer, which is conducive to exciton dissociation and charge transport. Our work effectively improved a device performance by using a halogen-free additive, which can be referential for industrialization | ||
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| 700 | 1 | |a Ma, Ruijie |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Yufei |e verfasserin |4 aut | |
| 700 | 1 | |a Du, Sanshan |e verfasserin |4 aut | |
| 700 | 1 | |a Tong, Junfeng |e verfasserin |4 aut | |
| 700 | 1 | |a Shi, Xiaoyan |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Jianfeng |e verfasserin |4 aut | |
| 700 | 1 | |a Bao, Xichang |e verfasserin |4 aut | |
| 700 | 1 | |a Xia, Yangjun |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Tao |e verfasserin |4 aut | |
| 700 | 1 | |a Yan, He |e verfasserin |4 aut | |
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