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DOI	10.1039/d0ee04012f
	Additive-induced miscibility regulation and hierarchical morphology enable 17.5% binary organic solar cells
	Lv J.; Tang H.; Huang J.; Yan C.; Liu K.; Yang Q.; Hu D.; Singh R.; Lee J.; Lu S.; Li G.; Kan Z.
发表日期	2021
ISSN	17545692
起始页码	3044
结束页码	3052
卷号	14 期号:5
英文摘要	Due to barrierless free charge generation, low charge trapping, and high charge mobilities, the PM6:Y6 organic solar cell (OSC) achieves an excellent power conversion efficiency (PCE) of 15.7%. However, the deficient hole transfer from Y6 to PM6 limits the further enhancement of the device performance. Herein, we demonstrate an additive-induced miscibility and morphology control strategy to achieve the balance of exciton dissociation and charge collection, prompting an increase in the PCE of OSCs composed of PM6:Y6 from 15.7% to 17.5%, which stands as the top PCE value of PM6:Y6 binary OSCs. The external quantum efficiency (EQE) of the optimal device significantly improves in the wavelength range where Y6 harvests photons. Therefore, the short-circuit current density (JSC) was enhanced to 26.98 mA cm-2, achieving 94.4% of the maximum theoretical JSC obtained from the identical device configuration. The remarkable performance enhancement mainly results from the miscibility-driven donor and acceptor phase optimization with hierarchical morphology formation, leading to the improved photon-to-electron response of the Y6 phase, enhanced and balanced charge extraction and collection. Our findings highlight the significance of morphology control towards unleashing the full potential of OSC materials. © 2021 The Royal Society of Chemistry.
英文关键词	Additives; Charge trapping; Conversion efficiency; Efficiency; Morphology; Photons; Solar power generation; Solubility; Device configurations; Device performance; Exciton dissociation; External quantum efficiency; Hierarchical morphology; Morphology control; Performance enhancements; Power conversion efficiencies; Organic solar cells; additive; assimilation efficiency; detection method; efficiency measurement; equipment; fuel cell; optimization; perforation; performance assessment
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/190688
作者单位	Thin-film Solar Technology Research Center, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Department of Electronic and Information Engineering, Hong Kong Polytechnic University Hung Hum, Kowloon, Hong Kong; Department of Energy and Materials Engineering, Dongguk University, Seoul, 04620, South Korea; Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon, 34134, South Korea
推荐引用方式 GB/T 7714	Lv J.,Tang H.,Huang J.,et al. Additive-induced miscibility regulation and hierarchical morphology enable 17.5% binary organic solar cells[J],2021,14(5).
APA	Lv J..,Tang H..,Huang J..,Yan C..,Liu K..,...&Kan Z..(2021).Additive-induced miscibility regulation and hierarchical morphology enable 17.5% binary organic solar cells.Energy & Environmental Science,14(5).
MLA	Lv J.,et al."Additive-induced miscibility regulation and hierarchical morphology enable 17.5% binary organic solar cells".Energy & Environmental Science 14.5(2021).