4.7 Article

A D-A copolymer of dithienosilole and a new acceptor unit of naphtho[2,3-c]thiophene-4,9-dione for efficient polymer solar cells

Journal

CHEMICAL COMMUNICATIONS
Volume 47, Issue 40, Pages 11345-11347

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c1cc14132e

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Funding

  1. NSFC [20874106, 20821120293, 50933003, 21021091]
  2. Ministry of Science and Technology of China
  3. Chinese Academy of Sciences

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A strong electron-withdrawing unit, naphtho[2,3-c]thiophene-4,9-dione, was copolymerized with dithienosilole to get a D-A copolymer, PDTSNTDO, with a narrow bandgap and lower-lying HOMO level. The PCE of the PDTSNTDO-based device reached 5.21%, with a high open circuit voltage of 0.88 V.

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