ICCAS OpenIR
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
2019-09-04
Source PublicationACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
Volume11Issue:35Pages:32218-32224
AbstractA 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.
DOI10.1021/acsami.9b11700
Indexed BySCI
Language英语
WOS IDWOS:000484831100070
EI Accession Number1944-8252
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/82609
Collection中国科学院化学研究所
AffiliationChinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
Recommended Citation
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.
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