气候变化领域集成服务门户(CCPortal): Interface-enhanced organic solar cells with extrapolated T80 lifetimes of over 20 years

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DOI	10.1016/j.scib.2019.10.019
	Interface-enhanced organic solar cells with extrapolated T80 lifetimes of over 20 years
	Xu X.; Xiao J.; Zhang G.; Wei L.; Jiao X.; Yip H.-L.; Cao Y.
发表日期	2020
ISSN	20959273
起始页码	208
结束页码	216
卷号	65 期号:3
英文摘要	With recent advances in the power conversion efficiency (PCE) of organic solar cells (OSCs) based on novel donor and non-fullerene acceptor (NFAs), improving the stability of these systems has become the most important issue for their practical applications. Herein, an efficient and highly stable OSC, containing a novel polymer donor and a non-fullerene acceptor system, is reported. The OSC is based on an inverted device structure that utilizes a self-assembled fullerene monolayer (C60-SAM) as the cathode modification layer, and an efficient and highly stable OSC composes of a polymer donor of poly[4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b’]dithiophene-alt-3-fluorothie-no[3,4-b]thiophene-2-carboxylate] (PTB7-Th) and a non-fullerene acceptor of (2,2′-((2Z,2′Z)-(((4,4,9,9-Tetrakis(4-hexylphenyl)-4,9-dihydro-sindaceno[1,2-b:5,6-b']dithiophene-2,7-diyl)bis(4-((2ethylhexyl)oxy)thiophene-5,2-diyl))bis(methanylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene −2,1-diylidene))dimalononitrile) (IEICO-4F) is presented, showing a PCE of 10%. It further achieves an extrapolated T80 lifetime (the time required to reach 80% of initial performance) of 34,000 h, operating under one sun illumination equivalent. Based on an estimated solar irradiance of 1500 kWh/(m2 year) for China, a potential lifetime of 22 years is inferred for the OSC. Further investigation reveals that the reported C60-SAM modification stabilizes the OSC active layer morphology by lowering the surface energy of the underlying ZnO electron transport layer and suppressing trap-assisted recombination, thereby improving photostability. The results of this work establish important guidelines for the development of non-fullerene based OSCs with enhanced stability and pave the way for the commercialization of OSC technology. © 2019 Science China Press
关键词	Green solvent Interlayer modification Non-fullerene acceptor Organic solar cell Photostability
英文关键词	Carboxylation; Electron transport properties; Extrapolation; Fullerenes; II-VI semiconductors; Morphology; Thiophene; Zinc oxide; Electron transport layers; Green solvents; Interlayer modification; Inverted device structures; Non-fullerene acceptor; Photo-stability; Power conversion efficiencies; Trap-assisted recombinations; Organic solar cells
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207252
作者单位	State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, China; Innovation Center of Printed Photovoltaics, South China Institute of Collaborative Innovation, Dongguan, 523808, China; Department of Materials Science and Engineering, Monash UniversityVictoria 3800, Australia; Australian Synchrotron, ANSTO, Clayton, Victoria 3168, Australia
推荐引用方式 GB/T 7714	Xu X.,Xiao J.,Zhang G.,等. Interface-enhanced organic solar cells with extrapolated T80 lifetimes of over 20 years[J],2020,65(3).
APA	Xu X..,Xiao J..,Zhang G..,Wei L..,Jiao X..,...&Cao Y..(2020).Interface-enhanced organic solar cells with extrapolated T80 lifetimes of over 20 years.Science Bulletin,65(3).
MLA	Xu X.,et al."Interface-enhanced organic solar cells with extrapolated T80 lifetimes of over 20 years".Science Bulletin 65.3(2020).