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- Yan, XinSoochow Univ, Peoples R China (author)
Highly efficient ternary solar cells with reduced non-radiative energy loss and enhanced stability via two compatible non-fullerene acceptors
- Article/chapterEnglish2022
Publisher, publication year, extent ...
- 2022
- ROYAL SOC CHEMISTRY,2022
- printrdacarrier
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- LIBRIS-ID:oai:DiVA.org:liu-187517
- https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-187517URI
- https://doi.org/10.1039/d2ta03941aDOI
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- Language:English
- Summary in:English
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- Funding Agencies|National Natural Science Foundation of China (NSFC) [51973146]; Jiangsu Provincial Natural Science Foundation [BK20190099]; Collaborative Innovation Center of Suzhou Nano Science Technology; Priority Academic Program Development of Jiangsu Higher Education Institutions; China Scholarship Council
- A ternary strategy by introducing a third component into a binary host system has been proven to be a simple and promising method to boost the power conversion efficiency (PCE) and stability of organic solar cells (OSCs). Herein, a high efficient ternary OSC is fabricated, wherein, a non-fullerene acceptor, namely MOIT-M, is introduced as a third component into the PM6:BTP-eC9 blend. MOIT-M possesses good complementary absorption spectra and aligned cascade energy levels with the host binary blend, which benefits light harvesting, exciton dissociation, and charge transport. Moreover, MOIT-M exhibits good miscibility with BTP-eC9, forming a well-mixed phase, which improves molecular packing for better charge transport and optimizes ternary blend morphology. Notably, the incorporation of MOIT-M suppresses non-radiative recombination, leading to reduced non-radiative energy losses (Delta E-nr). As a result, the ternary OSC exhibits a significantly increased PCE of 18.5% with a lower Delta E-nr of 0.21 eV in comparison with the control binary PM6:BTP-eC9 device with a PCE of 17.4% and a Delta E-nr of 0.24 eV. In addition, the ternary OSC displays better storage stability compared to the PM6:BTP-eC9 system. This work indicates that a ternary strategy via combining two compatible small molecule acceptors is effective to simultaneously improve the efficiency and stability of OSCs.
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- Wu, JingnanSoochow Univ, Peoples R China; Aalborg Univ, Denmark (author)
- Lv, JunfangSoochow Univ, Peoples R China (author)
- Zhang, LiuSoochow Univ, Peoples R China (author)
- Zhang, RuiLinköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten(Swepub:liu)ruizh84 (author)
- Guo, XiaSoochow Univ, Peoples R China (author)
- Zhang, MaojieSoochow Univ, Peoples R China (author)
- Soochow Univ, Peoples R ChinaSoochow Univ, Peoples R China; Aalborg Univ, Denmark (creator_code:org_t)
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- In:Journal of Materials Chemistry A: ROYAL SOC CHEMISTRY10:29, s. 15605-156132050-74882050-7496
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