Deciphering the Role of Chalcogen-Containing Heterocycles in Nonfullerene Acceptors for Organic Solar CellsVisa övriga samt affilieringar
2020 (Engelska)Ingår i: ACS Energy Letters, E-ISSN 2380-8195, Vol. 5, nr 11, s. 3415-3425Artikel i tidskrift (Refereegranskat) Published
Abstract [en]
The field of organic solar cells has experienced paradigm-shifting changes in recent years because of the emergence of nonfullerene acceptors (NFAs). It is critically important to gain more insight into the structure-property relationship of the emerging A-DAD-A-type NFAs. In this Letter, a family of NFAs named BPF-4F, BPT-4F, and BPS-4F incorporating various chalcogen-containing heterocycles, i.e., furan, thiophene, and selenophene, respectively, was designed and synthesized. These NFAs exhibited dramatic differences in their photovoltaic performances with device efficiencies of 16.8% achieved by the thiophene-based cells, which was much higher than the furan-based ones (12.6%). In addition, the selenophene-based NFA showed a red-shifted absorption relative to the furan- and thiophene-based ones and obtained a decent efficiency of 16.3% owing to an improved J(SC). The reasons why these NFAs performed differently are systematically studied by comparing their optoelectronic properties and film morphology, which provides new understandings of the molecular design of high-performance NFAs.
Ort, förlag, år, upplaga, sidor
AMER CHEMICAL SOC , 2020. Vol. 5, nr 11, s. 3415-3425
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URN: urn:nbn:se:liu:diva-172630DOI: 10.1021/acsenergylett.0c01688ISI: 000592749600012OAI: oai:DiVA.org:liu-172630DiVA, id: diva2:1521632
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Funding Agencies|Shen Zhen Technology and Innovation Commission [JCYJ20170413173814007, JCYJ20170818113905024]; Hong Kong Research Grants CouncilHong Kong Research Grants Council [R6021-18, 16305915, 16322416, 606012, 16303917]; Hong Kong Innovation and Technology Commission [ITC-CNERC14SC01, ITS/471/18]; National Natural Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC) [91433202]; National Key Research and Development Program of China - MOST [2019YFA0705900]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [61974006]; Guangdong Natural Science FoundationNational Natural Science Foundation of Guangdong Province [2018A030313332]; National Natural Research Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21702158]; ONROffice of Naval Research [N000141712204]; Office of Science, Office of Basic Energy Sciences, of the U.S. Department of EnergyUnited States Department of Energy (DOE) [DE-AC02-05CH11231]
2021-01-242021-01-242021-01-24