Published August 10, 2012
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Fine-tuning the Electronic Structure of Organic Dyes for Dye-Sensitized Solar Cells
- 1. Laboratory for Photonics and Interfaces, School of Basic Sciences, Swiss Federal Institute of Technology, 1015 Lausanne, Switzerland
Description
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 π-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 (η) of 6.6%.
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