title: Organic dyes incorporating the dithieno[3,2-b:2',3'-d]thiophene moiety for efficient dye-sensitized solar cells.
abstract: New dipolar compounds incorporating a dithieno[3,2-b:2',3'-d]thiophene unit as the electron donor, an oligothiophene moiety as the conjugated spacer, and 2-cyanoacrylic acid as the electron acceptor have been synthesized. These nonarylamine type metal-free organic compounds have been successfully used as the sensitizers of dye-sensitized solar cells (DSSCs). The conversion efficiencies of the DSSCs range from 3.54 to 5.15% under AM 1.5 G irradiation. The best efficiency reached approximately 70% of the ruthenium dye N719-based standard cell fabricated and measured under similar conditions.
authors.affiliation: Department of Chemistry, National Central University, Chungli, 320 Taiwan.
authors.forename: Hsiu-Yi
authors.initials: HY
authors.lastname: Yang
authors.forename: Yung-Sheng
authors.initials: YS
authors.lastname: Yen
authors.forename: Ying-Chan
authors.initials: YC
authors.lastname: Hsu
authors.forename: Hsien-Hsin
authors.initials: HH
authors.lastname: Chou
authors.forename: Jiann T
authors.initials: JT
authors.lastname: Lin