4.8 Article

Fine-tuning the Electronic Structure of Organic Dyes for Dye-Sensitized Solar Cells

Journal

ORGANIC LETTERS
Volume 14, Issue 17, Pages 4330-4333

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ol301730c

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Funding

  1. EU [ENERGY-261920]
  2. Ministry of Education, Science and Technology through the National Research Foundation of Korea [R31-2008-000-10035-0]

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A series of metal-free organic dyes exploiting different combinations of (hetero)cyclic linkers (benzene, thiophene, and thiazole) and bridges (4H-cyclopenta[2,1-b:3,4-b']dithiophene (CPDT) and benzodithiophene (BDT)) as the central pi-spacers were synthesized and characterized. Among them, the sensitizer containing the thiophene and CPDT showed the most broad incident photon-to-current conversion efficiency spectra, resulting in a solar energy conversion efficiency (eta) of 6.6%.

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