title: Fine-tuning the electronic structure of organic dyes for dye-sensitized solar cells.
abstract: 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%.
authors.affiliation: Laboratory for Photonics and Interfaces, School of Basic Sciences, Swiss Federal Institute of Technology, 1015 Lausanne, Switzerland.
authors.forename: Peng
authors.initials: P
authors.lastname: Gao
authors.forename: Hoi Nok
authors.initials: HN
authors.lastname: Tsao
authors.forename: Michael
authors.initials: M
authors.lastname: Grätzel
authors.forename: Mohammad K
authors.initials: MK
authors.lastname: Nazeeruddin