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  • Cui, YongChinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China (author)

Single-Junction Organic Photovoltaic Cells with Approaching 18% Efficiency

  • Article/chapterEnglish2020

Publisher, publication year, extent ...

  • 2020-03-29
  • WILEY-V C H VERLAG GMBH,2020
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:liu-165119
  • https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-165119URI
  • https://doi.org/10.1002/adma.201908205DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Funding Agencies|National Key Research and Development Program of China - MOST [2019YFA0705900]; Basic and Applied Basic Research Major Program of Guangdong Province [2019B030302007]; NSFCNational Natural Science Foundation of China [21805287, 21734008]; Youth Innovation Promotion Association CAS [2018043]; National Natural Science Foundation of China (NSFC)National Natural Science Foundation of China [21835006, 91633301, 51961135103, 51673201]; China Postdoctoral Science FoundationChina Postdoctoral Science Foundation [2019M660800]; Swedish Research Council VRSwedish Research Council [2018-06048]; Swedish Energy Agency EnergimyndighetenSwedish Energy Agency [2016-010174]; Beijing National Laboratory for Molecular Sciences [BNLMS-CXXM-201903]
  • Optimizing the molecular structures of organic photovoltaic (OPV) materials is one of the most effective methods to boost power conversion efficiencies (PCEs). For an excellent molecular system with a certain conjugated skeleton, fine tuning the alky chains is of considerable significance to fully explore its photovoltaic potential. In this work, the optimization of alkyl chains is performed on a chlorinated nonfullerene acceptor (NFA) named BTP-4Cl-BO (a Y6 derivative) and very impressive photovoltaic parameters in OPV cells are obtained. To get more ordered intermolecular packing, the n-undecyl is shortened at the edge of BTP-eC11 to n-nonyl and n-heptyl. As a result, the NFAs of BTP-eC9 and BTP-eC7 are synthesized. The BTP-eC7 shows relatively poor solubility and thus limits its application in device fabrication. Fortunately, the BTP-eC9 possesses good solubility and, at the same time, enhanced electron transport property than BTP-eC11. Significantly, due to the simultaneously enhanced short-circuit current density and fill factor, the BTP-eC9-based single-junction OPV cells record a maximum PCE of 17.8% and get a certified value of 17.3%. These results demonstrate that minimizing the alkyl chains to get suitable solubility and enhanced intermolecular packing has a great potential in further improving its photovoltaic performance.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Yao, HuifengChinese Acad Sci, Peoples R China (author)
  • Zhang, JianqiNatl Ctr Nanosci and Technol, Peoples R China (author)
  • Xian, KaihuChinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China (author)
  • Zhang, TaoChinese Acad Sci, Peoples R China (author)
  • Hong, LingUniv Chinese Acad Sci, Peoples R China (author)
  • Wang, YumingLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten,Chinese Acad Sci, Peoples R China(Swepub:liu)yumwa29 (author)
  • Xu, YeChinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China (author)
  • Ma, KangqiaoChinese Acad Sci, Peoples R China (author)
  • An, CunbinChinese Acad Sci, Peoples R China (author)
  • He, ChangChinese Acad Sci, Peoples R China (author)
  • Wei, ZhixiangUniv Chinese Acad Sci, Peoples R China; Natl Ctr Nanosci and Technol, Peoples R China (author)
  • Gao, FengLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten(Swepub:liu)fenga88 (author)
  • Hou, JianhuiChinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China (author)
  • Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R ChinaChinese Acad Sci, Peoples R China (creator_code:org_t)

Related titles

  • In:Advanced Materials: WILEY-V C H VERLAG GMBH32:190935-96481521-4095

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