4.7 Article

Fullerene-free small molecule organic solar cells with a high open circuit voltage of 1.15 V

Journal

CHEMICAL COMMUNICATIONS
Volume 52, Issue 3, Pages 465-468

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c5cc07973j

Keywords

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Funding

  1. MoST [2014CB643502]
  2. NSFC [51373078, 51422304, 91433101]
  3. PCSIRT [IRT1257]
  4. Tianjin city [13RCGFGX01121]
  5. Polymer-Based Materials for Harvesting Solar Energy (PhaSE), an Energy Frontier Research Center - U.S. Department of Energy, Office of Basic Energy Sciences [DE-SC0001087]

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A new small molecule named DTBTF with thiobarbituric acid as a terminal group was designed and synthesized as an acceptor for organic photovoltaic applications. DTBTF exhibits strong absorption in the visible region, and a relatively high lying LUMO energy level (-3.62 eV). All-small-molecule organic solar cells based on DR3TSBDT:DTBTF blend films show a considerable PCE of 3.84% with a high V-oc of 1.15 V.

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