4.6 Article

Narrow-optical-gap π-conjugated small molecules based on terminal isoindigo and thienoisoindigo acceptor units for photovoltaic application

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RSC ADVANCES
卷 3, 期 37, 页码 16259-16263

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ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra42444h

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资金

  1. Ministry of Education, Culture, Sports, Science and Technology, Japan
  2. Grants-in-Aid for Scientific Research [23245032, 20108001] Funding Source: KAKEN

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Two acceptor-donor type conjugated small molecules based on isoindigo and thienoisoindigo acceptor units are synthesized. The small molecules showed broad and low-energy light absorption properties. On application of the small molecules in organic photovoltaic cells, thienoisoindigo-based small molecule in combination with PC71BM showed moderate photovoltaic efficiency with a PCE of 1.51% with an open-circuit voltage of 0.72 V under AM 1.5 solar irradiation.

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