气候变化领域集成服务门户(CCPortal): Rational compatibility in a ternary matrix enables all-small-molecule organic solar cells with over 16% efficiency

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DOI	10.1039/d1ee00496d
	Rational compatibility in a ternary matrix enables all-small-molecule organic solar cells with over 16% efficiency
	Jiang M.; Bai H.; Zhi H.; Yan L.; Woo H.Y.; Tong L.; Wang J.; Zhang F.; An Q.
发表日期	2021
ISSN	17545692
起始页码	3945
结束页码	3953
卷号	14 期号:7
英文摘要	How to manipulate the phase separation and molecular arrangement to meet the need of efficient charge generation and extraction remains a long-standing challenge in all-small-molecule organic solar cells (ASM-OSCs). Herein, a small molecule acceptor Y7 as a morphology modulator was incorporated into a B1:BO-4Cl matrix to fabricate ternary ASM-OSCs. Y7 possesses excellent compatibility with the acceptor BO-4Cl but poor compatibility with the donor B1. The two acceptors prefer to form an alloy-like structure in ternary blends due to their good compatibility, which is conducive to fine-tuning the molecular arrangement for facilitating charge extraction. The inferior compatibility originating from the strong intermolecular interaction between Y7 and B1 can provide a driving force to manipulate the phase separation between the donor and acceptor for gaining well-formed nanofibrous and bi-continuous interpenetrating networks, leading to efficient charge separation, transport and collection in ternary blends. The ternary ASM-OSCs with 10 wt% Y7 in acceptors achieve a top-ranked power conversion efficiency of 16.28% with a holistic improvement of short-circuit current density, open-circuit voltage and fill factor. This work opens a new avenue to optimize the morphology for further boosting the performance of OSCs. © The Royal Society of Chemistry.
英文关键词	Chlorine compounds; Conversion efficiency; Efficiency; Extraction; Molecules; Morphology; Open circuit voltage; Phase separation; Charge extraction; Charge separations; Donor and acceptor; Good compatibility; Intermolecular interactions; Molecular arrangements; Power conversion efficiencies; Small-molecule organic solar cells; Organic solar cells; energy efficiency; fuel cell; molecular analysis; solar power
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190625
作者单位	Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China; Department of Chemistry, Korea University, Seoul, 136-713, South Korea; Department of Basic Sciences, Air Force Engineering University, Xi'an, 710038, China; School of Science, Beijing Jiaotong University, Beijing, 100044, China
推荐引用方式 GB/T 7714	Jiang M.,Bai H.,Zhi H.,et al. Rational compatibility in a ternary matrix enables all-small-molecule organic solar cells with over 16% efficiency[J],2021,14(7).
APA	Jiang M..,Bai H..,Zhi H..,Yan L..,Woo H.Y..,...&An Q..(2021).Rational compatibility in a ternary matrix enables all-small-molecule organic solar cells with over 16% efficiency.Energy & Environmental Science,14(7).
MLA	Jiang M.,et al."Rational compatibility in a ternary matrix enables all-small-molecule organic solar cells with over 16% efficiency".Energy & Environmental Science 14.7(2021).