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  • Song, JiageCent South Univ, Peoples R China (author)

Over 13% Efficient Organic Solar Cells Based on Low-Cost Pentacyclic A-DA D-A-Type Nonfullerene Acceptor

  • Article/chapterEnglish2021

Publisher, publication year, extent ...

  • 2021-06-23
  • Wiley-Blackwell,2021
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:liu-177840
  • https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-177840URI
  • https://doi.org/10.1002/solr.202100281DOI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

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

Notes

  • Funding Agencies|National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21875286]; Hunan Intellectual Property Bureau [2016e004]; Science and Technology Plan Key Project of Hunan Province [2020GK2100]; Natural Science Foundation of Hunan ProvinceNatural Science Foundation of Hunan Province [2020JJ4721]
  • Recent studies have almost focused on finding active layer materials with extended pi-conjugation structures for high-performance organic solar cells (OSCs). However, with the extension of conjugate length, the synthesis difficulty and cost of materials will increase. Achieving high efficiency while reducing material costs is a prerequisite for the commercialization of OSCs. Herein, two low-cost A-DA D-A-type (where A and D represent an electron-withdrawing unit and an electron-donating unit, respectively) nonfullerene acceptors (Y25,Y26) are synthesized with pentacyclic fused backbone as the DA D electron-deficient core and 5,6-difluoro-3-(dicyandiamethyl) indigo as the end groups. Compared with classical Y series acceptors with heptacyclic backbone, although Y25 and Y26 own the reduced conjugated length, they still show moderate performance (11.65% and 13.34%), and the cost of synthesis is significantly reduced. Therefore, we provide a new molecular design idea for commercially efficient nonfullerene OSCs acceptors. We also find that adding alkyl chains to the beta site of thiophenes is beneficial to obtaining the reduced energetic disorder, dominant molecular stacking, and desirable morphology, which can facilitate charge carrier transport and prompt higher short-circuit current density (J(sc)) as well as fill factor.

Subject headings and genre

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

  • Cai, FangfangCent South Univ, Peoples R China (author)
  • Zhu, CanCent South Univ, Peoples R China; Chinese Acad Sci, Peoples R China (author)
  • Chen, HonggangCent South Univ, Peoples R China; Chinese Acad Sci, Peoples R China (author)
  • Wei, QingyaCent South Univ, Peoples R China (author)
  • Li, DongxuCent South Univ, Peoples R China (author)
  • Zhang, ChujunHong Kong Baptist Univ, Peoples R China; Hong Kong Baptist Univ, Peoples R China (author)
  • Zhang, RuiLinköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten(Swepub:liu)ruizh84 (author)
  • Yuan, JunCent South Univ, Peoples R China (author)
  • Peng, HongjianCent South Univ, Peoples R China (author)
  • So, Shu KongHong Kong Baptist Univ, Peoples R China; Hong Kong Baptist Univ, Peoples R China (author)
  • Zou, YingpingCent South Univ, Peoples R China (author)
  • Cent South Univ, Peoples R ChinaCent South Univ, Peoples R China; Chinese Acad Sci, Peoples R China (creator_code:org_t)

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  • In:Solar RRL: Wiley-Blackwell5:82367-198X

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