DOI: 10.1016/j.scib.2019.10.019
论文题名: Interface-enhanced organic solar cells with extrapolated T80 lifetimes of over 20 years
作者: Xu X. ; Xiao J. ; Zhang G. ; Wei L. ; Jiao X. ; Yip H.-L. ; Cao Y.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期: 3 起始页码: 208
结束页码: 216
语种: 英语
中文关键词: 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
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 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170107
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
Xu X.,Xiao J.,Zhang G.,et al. Interface-enhanced organic solar cells with extrapolated T80 lifetimes of over 20 years[J]. Science Bulletin,2020-01-01,65(3)