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DOI	10.1039/c8ee00036k
	Toward high-efficiency, hysteresis-less, stable perovskite solar cells: Unusual doping of a hole-transporting material using a fluorine-containing hydrophobic Lewis acid
	Luo J.; Xia J.; Yang H.; Chen L.; Wan Z.; Han F.; Malik H.A.; Zhu X.; Jia C.
发表日期	2018
ISSN	17545692
起始页码	2035
结束页码	2045
卷号	11 期号:8
英文摘要	Perovskite solar cells (PSCs) have demonstrated high power conversion efficiency (PCE) but inferior long-term stability and remarkable hysteresis. To date, the most efficient PSCs have a n-i-p device architecture and use Li-TFSI/t-BP as standard bi-dopants for the hole-transporting layer (HTL). However, such dopants not only induce deleterious effects on stability but also significantly affect the hysteresis of PSCs. Here, we demonstrate that a fluorine-containing hydrophobic Lewis acid dopant (LAD) can be employed as an effective dopant for PTAA to realize an exceptional fill factor of 0.81 and a record PCE as high as 19.01%, the highest value among the ever reported PSCs based on a novel dopant in the HTL, versus 17.77% for the control device with Li-TFSI/t-BP doped PTAA. To the best of our knowledge, this is the first case in which a PSC based on a novel dopant for the HTL shows higher efficiency than a PSC based on the state-of-the-art bi-dopants Li-TFSI/t-BP. Besides, the LAD-based PSC displays lower J-V hysteresis and much better long-term stability of up to 70 days under air exposure without encapsulation. We believe that this work will pave a new avenue for high-efficiency, hysteresis-less and stable PSCs exploring hydrophobic dopants as alternatives to hydrophilic Li-TFSI/t-BP. © 2018 The Royal Society of Chemistry.
英文关键词	Doping (additives); Efficiency; Fluorine; Hole mobility; Hydrophobicity; Hysteresis; Perovskite; Perovskite solar cells; Solar cells; Deleterious effects; Device architectures; High power conversion; Higher efficiency; Hole transporting layers; Hole-transporting materials; Long term stability; State of the art; Lithium compounds; air exposure; efficiency measurement; encapsulation; equipment; fuel cell; hydrophobicity; hysteresis; perovskite
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/190187
作者单位	State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 610054, China; Dongguan Neutron Science Center, Dongguan, 523803, China; State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou, 510640, China
推荐引用方式 GB/T 7714	Luo J.,Xia J.,Yang H.,et al. Toward high-efficiency, hysteresis-less, stable perovskite solar cells: Unusual doping of a hole-transporting material using a fluorine-containing hydrophobic Lewis acid[J],2018,11(8).
APA	Luo J..,Xia J..,Yang H..,Chen L..,Wan Z..,...&Jia C..(2018).Toward high-efficiency, hysteresis-less, stable perovskite solar cells: Unusual doping of a hole-transporting material using a fluorine-containing hydrophobic Lewis acid.Energy & Environmental Science,11(8).
MLA	Luo J.,et al."Toward high-efficiency, hysteresis-less, stable perovskite solar cells: Unusual doping of a hole-transporting material using a fluorine-containing hydrophobic Lewis acid".Energy & Environmental Science 11.8(2018).