4.7 Article

A benzothiazole-cyclopentadithiophene bridged D-A-π-A sensitizer with enhanced light absorption for high efficiency dye-sensitized solar cells

Journal

CHEMICAL COMMUNICATIONS
Volume 50, Issue 30, Pages 3965-3968

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cc00577e

Keywords

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Funding

  1. National Research Foundation Singapore [NRF-CRP4-2008-03]
  2. Ministry of Education [MOE2011-T2-2-130]
  3. NSFC [91333206, 20974091, 50803051]
  4. Natural Science Foundation of Hunan Province of China [10JJ1002]
  5. Foundation of the Hunan Provincial Education Department [10B107]

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We demonstrate an efficient D-A-pi-A sensitizer with a benzothiazole-cyclopentadithiophene moiety as the spacer in a triphenylamine organic dye for dye-sensitized solar cells. The dye has a broad visible light absorption range up to 800 nm. A power conversion efficiency > 9% has been achieved using a [Co(bpy)(3)](2+/3+)-based electrolyte.

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