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DOI	10.1039/d0ee00662a
	Concurrent improvement in: J SCand v OCin high-efficiency ternary organic solar cells enabled by a red-absorbing small-molecule acceptor with a high LUMO level
	Liu T.; Ma R.; Luo Z.; Guo Y.; Zhang G.; Xiao Y.; Yang T.; Chen Y.; Li G.; Yi Y.; Lu X.; Yan H.; Tang B.
发表日期	2020
ISSN	17545692
起始页码	2115
结束页码	2123
卷号	13 期号:7
英文摘要	Ternary organic solar cells (OSCs) have demonstrated great potential in promoting the power conversion efficiency (PCE) of single-junction OSCs. Generally, the introduction of a third component with redshifted absorption spectra can broaden the absorption spectra and thereby potentially enhances short-circuit current density (JSC), but reduces open circuit voltage (VOC). Herein, a small-molecule acceptor (SMA) named N7IT with a high LUMO energy level and a redshifted absorption spectrum, is employed as the third component in the PM6:IT-4F-based binary host. Unlike previous results, the introduction of N71T enhances both the VOC and the JSC relative to the PM6:IT-4F host binary system. The champion ternary device (PM6 : IT-4F : N7IT = 1 : 0.7 : 0.3) demonstrates an outstanding PCE of 15.02%, significantly higher than its binary counterparts. This strategy is further validated in PM6:Y6 blends, where the addition of SY3 featuring near-infrared absorption and high LUMO effectively boosts the PCE from 16.49% to 17.07%. Our result proves the effectiveness of an appropriate third component and demonstrates the potential of red-absorbing, high-LUMO SMAs in further promoting the efficiency of single-junction binary OSCs. © 2020 The Royal Society of Chemistry.
英文关键词	Absorption spectra; Absorption spectroscopy; Conversion efficiency; Infrared devices; Light absorption; Molecules; Open circuit voltage; Red Shift; High-efficiency; LUMO energy levels; Near-infrared absorption; Power conversion efficiencies; Redshifted absorption; Single junction; Small molecules; Third component; Organic solar cells; absorption; electrochemistry; energy efficiency; fuel cell; molecular analysis; organic compound
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/189627
作者单位	College of Chemistry Chemical, Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collab. Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Materials and Clean Energy, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, China; Department of Chemistry, Hong Kong Br. of Chinese Natl. Engineering Research Center for Tissue Restoration and Reconstruction, Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong; Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; School of Light Industry and Engineering, Qilu University of Technology, Shandong Academy of Science, Jinan, 250353, China; EFlexPV Limited, Hang Seng Causeway Bay BLDG 28 Yee Wo Street, Causeway Bay, Hong Kong, Hong Kong; Department of P...
推荐引用方式 GB/T 7714	Liu T.,Ma R.,Luo Z.,et al. Concurrent improvement in: J SCand v OCin high-efficiency ternary organic solar cells enabled by a red-absorbing small-molecule acceptor with a high LUMO level[J],2020,13(7).
APA	Liu T..,Ma R..,Luo Z..,Guo Y..,Zhang G..,...&Tang B..(2020).Concurrent improvement in: J SCand v OCin high-efficiency ternary organic solar cells enabled by a red-absorbing small-molecule acceptor with a high LUMO level.Energy & Environmental Science,13(7).
MLA	Liu T.,et al."Concurrent improvement in: J SCand v OCin high-efficiency ternary organic solar cells enabled by a red-absorbing small-molecule acceptor with a high LUMO level".Energy & Environmental Science 13.7(2020).