4.7 Article

Diindenothieno[2,3-b]thiophene arene for efficient organic photovoltaics with an extra high open-circuit voltage of 1.14 ev

Journal

CHEMICAL COMMUNICATIONS
Volume 48, Issue 26, Pages 3203-3205

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cc18189d

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Funding

  1. National Science Council
  2. National Chiao Tung University
  3. Ministry of Education, Taiwan

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We report a novel diindenothieno[2,3-b]thiophene ladder-type hexacyclic arene for constructing a donor-acceptor copolymer PDITTDTBT. A device based on PDITTDTBT:PC71BM exhibited a high V-oc of 0.92 V with an impressive PCE of 5.8%, while a PDITTDTBT:DMPCBA-based device showed an extra high V-oc of 1.14 V.

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