气候变化领域集成服务门户(CCPortal): Fine-tuning of side-chain orientations on nonfullerene acceptors enables organic solar cells with 17.7% efficiency

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DOI	10.1039/d0ee03506h
	Fine-tuning of side-chain orientations on nonfullerene acceptors enables organic solar cells with 17.7% efficiency
	Chai G.; Chang Y.; Zhang J.; Xu X.; Yu L.; Zou X.; Li X.; Chen Y.; Luo S.; Liu B.; Bai F.; Luo Z.; Yu H.; Liang J.; Liu T.; Wong K.S.; Zhou H.; Peng Q.; Yan H.
发表日期	2021
ISSN	17545692
起始页码	3469
结束页码	3479
卷号	14 期号:6
英文摘要	Side-chain engineering has been shown to be an important strategy to optimize Y-series nonfullerene acceptors (NFAs). Most previous reports were focusing on changing the branching positions and size of the alkyl side chains on Y6. In this paper, we investigate the influence of the orientation of side chains on the properties of NFAs and the performance of the organic solar cells (OSCs). Three isomeric NFAs namedo-BTP-PhC6,m-BTP-PhC6, andp-BTP-PhC6 are designed by changing the substitution positions and thus orientations of the side chains attached to the central core. Our studies show that the optimal side-chain orientation can be achieved by themeta-positioned hexylphenyl group (of them-BTP-PhC6 molecule), which introduces significant beneficial effects on optical absorption, intermolecular packing and phase separation of the NFAs. By pairing a donor polymer PTQ10 withm-BTP-PhC6, device efficiencies of 17.7% can be achieved, which is among the best values for PTQ10-based nonfullerene OSC devices so far. These results reveal that regulating side-chain orientations of Y-series NFAs is a promising strategy to achieve favorable morphology, and high charge mobility and solar cell performances. © The Royal Society of Chemistry 2021.
英文关键词	Efficiency; Light absorption; Nanostructured materials; Phase separation; Alkyl side chains; Beneficial effects; Central core; Device efficiency; High charges; Intermolecular packing; Side-chain orientation; Solar cell performance; Organic solar cells; absorption; adsorption; energy efficiency; fuel cell; optimization; performance assessment; polymer; separation
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/190656
作者单位	Hong Kong University of Science and Technology-Shenzhen Research Institute, No. 9 Yuexing first RD, Hi-tech Park, Nanshan, Shenzhen 518057, China; Department of Chemistry, Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, Energy Institute and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong; School of Chemical Engineering, and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China; Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong; School of Electronic and Computer Engineering, Peking University Shenzhen Graduate School, Shenzhen, 518055, China; Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology (SCUT), Guangzhou, 5106...
推荐引用方式 GB/T 7714	Chai G.,Chang Y.,Zhang J.,et al. Fine-tuning of side-chain orientations on nonfullerene acceptors enables organic solar cells with 17.7% efficiency[J],2021,14(6).
APA	Chai G..,Chang Y..,Zhang J..,Xu X..,Yu L..,...&Yan H..(2021).Fine-tuning of side-chain orientations on nonfullerene acceptors enables organic solar cells with 17.7% efficiency.Energy & Environmental Science,14(6).
MLA	Chai G.,et al."Fine-tuning of side-chain orientations on nonfullerene acceptors enables organic solar cells with 17.7% efficiency".Energy & Environmental Science 14.6(2021).