A simple high-performance fully nonfused ring electron acceptor with a planar molecular backbone

doi:10.1016/j.cej.2022.136472

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	A simple high-performance fully nonfused ring electron acceptor with a planar molecular backbone
	Zheng, Xinming 1,2; Liu, Wenlong 2,3; Lu, Hao 2; Yu, Na 4; Wang, Yunzhi 2; Huang, Hao 2; Li, Song 2; Wang, Xiaodong 2; Wang, Hang 1; Liu, Yahui 1
刊名	Chemical Engineering Journal
	2022-09-15
卷号	444
关键词	Blue shift Electrons Ions Red Shift Solar power generation Electron-acceptor Fully nonfused ring electron acceptor Higher yield Modular synthesis Nonfullerene acceptor Performance Photovoltaic performance Ring electrons Simple++ Synthesised
ISSN号	1385-8947
DOI	10.1016/j.cej.2022.136472
英文摘要	We designed two simple fully nonfused ring electron acceptors 4T-OEH and 4T-EH with 3,4-bis(alkoxy)thiophene and 3,4-dialkylthiophene π-bridge units, respectively, which can be modularly synthesized with only four high-yield steps. With the help of intramolecular S-O noncovalent interaction, 4T-OEH tends to form a planar molecular backbone, which is beneficial for the electron delocalization and charge transport. Besides, the neat 4T-OEH film displays a more ordered molecular packing and obviously red-shifted absorption after thermal annealing. Compared with 4T-EH, 4T-OEH based devices can form more homogenous phase morphology, higher and more balanced hole and electron mobilities. The optimal OSCs based on 4T-OEH can generate an excellent PCE of 12.12%, which is much higher than 4T-OEH based ones (7.36%). It is worth noting that the figure-of-merit values of 4T-OEH is much higher than the star acceptors (ITIC and Y6), demonstrating its high potential for future practical application. Our work has demonstrated that we can tune the backbone planarity, solubility and packing behavior of acceptor molecules via optimizing their lateral substituents to obtain high efficiency and low-cost fully nonfused ring electron acceptors. © 2022 Elsevier B.V.
WOS研究方向	Engineering
语种	英语
出版者	Elsevier B.V.
WOS记录号	WOS:000800394200001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158513]
专题	兰州理工大学
作者单位	1.College of Textiles & Clothing, State Key Laboratory of Bio-fibers and Eco-textiles, Qingdao University, Qingdao; 266071, China; 2.Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing; 100875, China; 3.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 4.Center for Advanced Low-dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai; 201620, China
推荐引用方式 GB/T 7714	Zheng, Xinming,Liu, Wenlong,Lu, Hao,et al. A simple high-performance fully nonfused ring electron acceptor with a planar molecular backbone[J]. Chemical Engineering Journal,2022,444.
APA	Zheng, Xinming.,Liu, Wenlong.,Lu, Hao.,Yu, Na.,Wang, Yunzhi.,...&Bo, Zhishan.(2022).A simple high-performance fully nonfused ring electron acceptor with a planar molecular backbone.Chemical Engineering Journal,444.
MLA	Zheng, Xinming,et al."A simple high-performance fully nonfused ring electron acceptor with a planar molecular backbone".Chemical Engineering Journal 444(2022).