Thioether Bond Modification Enables Boosted Photovoltaic Performance of Nonfullerene Polymer Solar Cells

doi:10.1021/acsami.9b11700

CORC > 化学研究所 > 中国科学院化学研究所

	Thioether Bond Modification Enables Boosted Photovoltaic Performance of Nonfullerene Polymer Solar Cells
	Zhang, Youdi; Wang, Ying; Yang, Tao; Liu, Tao; Xiao, Yiqun; Lu, Xinhui; Yan, He; Yuan, Zhongyi; Chen, Yiwang; Li, Yongfang
刊名	ACS APPLIED MATERIALS & INTERFACES
	2019-09-04
卷号	11 期号:35 页码:32218-32224
ISSN号	1944-8244
DOI	10.1021/acsami.9b11700
英文摘要	A small-molecule nonfullerene acceptor, ITIC-S, bearing a fused heptacyclic benzodi(cyclopentadithiophene) core with a thioether-bond-substituted thiophene, is designed, synthesized, and compared with its alkyl-substituted analog, ITIC2. Compared with ITIC2, ITIC-S with a thioether bond exhibits higher electron mobility, a slightly larger optical band gap, and similar absorption. The active layer incorporating ITIC-S and the wide-bandgap polymeric donor PBDB-T-SF displays a smaller crystalline coherent length of pi-pi stacking, more balanced mobilities, weaker bimolecular recombination, and more effective charge collection than its PBDB-T-SF:ITIC2 counterpart. Accordingly, polymer solar cells incorporating ITIC-S and PBDB-T-SF demonstrate a fill factor (FF) of 66.8% and a champion power conversion efficiency (PCE) of 11.6%, exceeding those of the PBDB-T-SF:ITIC2 blend (PCE = 10.1%, FF = 59.7%), which shows that the thioether bond substitution strategy is an easy yet viable way for designing high-performance electron acceptors.
语种	英语
WOS记录号	WOS:000484831100070
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/82609]
专题	中国科学院化学研究所
作者单位	Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Youdi,Wang, Ying,Yang, Tao,et al. Thioether Bond Modification Enables Boosted Photovoltaic Performance of Nonfullerene Polymer Solar Cells[J]. ACS APPLIED MATERIALS & INTERFACES,2019,11(35):32218-32224.
APA	Zhang, Youdi.,Wang, Ying.,Yang, Tao.,Liu, Tao.,Xiao, Yiqun.,...&Li, Yongfang.(2019).Thioether Bond Modification Enables Boosted Photovoltaic Performance of Nonfullerene Polymer Solar Cells.ACS APPLIED MATERIALS & INTERFACES,11(35),32218-32224.
MLA	Zhang, Youdi,et al."Thioether Bond Modification Enables Boosted Photovoltaic Performance of Nonfullerene Polymer Solar Cells".ACS APPLIED MATERIALS & INTERFACES 11.35(2019):32218-32224.