4.7 Article

A novel D-A-pi-A organic sensitizer containing a diketopyrrolopyrrole unit with a branched alkyl chain for highly efficient and stable dye-sensitized solar cells

Journal

CHEMICAL COMMUNICATIONS
Volume 48, Issue 55, Pages 6972-6974

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cc31998e

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Funding

  1. Core Research for Evolutional Science and Technology (CREST) of the Japan Science and Technology Agency, NSFC/China [21190033]
  2. National Basic Research 973 program [2011CB8068400]

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A novel D-A-pi-A type organic dye (YCD01) incorporating a diketopyrrolopyrrole unit with a branched alkyl chain was synthesized for dye-sensitized solar cells. YCD01 showed a high conversion efficiency of 7.43% (AM 1.5, 100 mW cm(-2)) with a J(sc) of 13.40 mA cm(-2), a V-oc of 0.76 V, a FF of 0.73 and an excellent stability.

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