气候变化领域集成服务门户(CCPortal): A nonfullerene acceptor with a 1000 nm absorption edge enables ternary organic solar cells with improved optical and morphological properties and efficiencies over 15%

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DOI	10.1039/c9ee01030k
	A nonfullerene acceptor with a 1000 nm absorption edge enables ternary organic solar cells with improved optical and morphological properties and efficiencies over 15%
	Liu T.; Luo Z.; Chen Y.; Yang T.; Xiao Y.; Zhang G.; Ma R.; Lu X.; Zhan C.; Zhang M.; Yang C.; Li Y.; Yao J.; Yan H.
发表日期	2019
ISSN	17545692
起始页码	2529
结束页码	2536
卷号	12 期号:8
英文摘要	Ternary organic solar cells (OSCs) have shown tremendous potential in improving the photovoltaic performance of single-junction OSCs. Here, a series of ternary OSCs are fabricated with PM7:ITC-2Cl as the host system and an ultra-low bandgap acceptor named IXIC-4Cl that has an absorption edge reaching 1000 nm as the third component. The optimal ternary OSC shows a power conversion efficiency (PCE) of 15.37%, which is significantly higher than those of the binary counterparts based on PM7:ITC-2Cl (13.72%) or PM7:IXIC-4Cl (12.01%). The excellent PCE is mainly attributed to the increased short-circuit current (JSC), which mainly arises from the complementary absorption of the third component and thus the overall broadened absorption profile. In addition, the addition of IXIC-4Cl into the PM7:ITC-2Cl binary system suppresses bimolecular recombination, improves charge dissociation and the collection efficiency, balances charge transport and reduces the domain size, which are responsible for the enhanced JSC. Noticeably, the optimized ternary device shows a PCE over 15% with a quite small energy loss, which are the best results for ternary OSCs to date. These results offer more insight into the role of an ultra-low bandgap non-fullerene acceptor as the third component in promoting the device performance of ternary OSCs. © The Royal Society of Chemistry 2019.
英文关键词	Energy dissipation; Energy gap; Organic solar cells; Solar power generation; Absorption edges; Bimolecular recombination; Collection efficiency; Device performance; Morphological properties; Photovoltaic performance; Power conversion efficiencies; Single junction; Chlorine compounds; absorption; energy efficiency; fuel cell; fullerene; optical property; 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/189858
作者单位	Department of Chemistry, Hong Kong Branch, Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, Hong Kong; Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, Department of Chemistry, Wuhan University, Wuhan, 430072, China; Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, China; Department of Physics, Chinese University of Hong Kong, New Territories, Hong Kong, Hong Kong; Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Laboratory of Advanced Optoelectronic Materials, Soochow University, Suzhou, 215123, China
推荐引用方式 GB/T 7714	Liu T.,Luo Z.,Chen Y.,et al. A nonfullerene acceptor with a 1000 nm absorption edge enables ternary organic solar cells with improved optical and morphological properties and efficiencies over 15%[J],2019,12(8).
APA	Liu T..,Luo Z..,Chen Y..,Yang T..,Xiao Y..,...&Yan H..(2019).A nonfullerene acceptor with a 1000 nm absorption edge enables ternary organic solar cells with improved optical and morphological properties and efficiencies over 15%.Energy & Environmental Science,12(8).
MLA	Liu T.,et al."A nonfullerene acceptor with a 1000 nm absorption edge enables ternary organic solar cells with improved optical and morphological properties and efficiencies over 15%".Energy & Environmental Science 12.8(2019).