4.8 Article

Side-Chain Fluorination: An Effective Approach to Achieving High-Performance All-Polymer Solar Cells with Efficiency Exceeding 7%

Journal

ADVANCED MATERIALS
Volume 28, Issue 45, Pages 10016-10023

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201602298

Keywords

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Funding

  1. National Research Foundation by the Ministry of Science, ICT & Future Planning (MSIP) of Korea [2012M3A6A7055540, 2015M1A2A2057509, 2011-0028320, 2015M1A 2A2056216]
  2. FSU materials and energy initiative
  3. National Research Foundation of Korea [2011-0028320, 2012M3A6A7055540] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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Side-chain fluorination of polymers is demonstrated as a highly effective strategy to improve the efficiency of all-polymer solar cells from 2.93% (nonfluorinated P1) to 7.13% (fluorinated P2). This significant enhancement is achieved by synergistic improvements in open-circuit voltage, charge generation, and charge transport, as fluorination of the donor polymer optimizes the band alignment and the film morphology.

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