title: Organic dyes incorporating the benzo[1,2-b:4,5-b']dithiophene moiety for efficient dye-sensitized solar cells.
abstract: A new class of organic sensitizers incorporating a benzo[1,2-b:4,5-b']dithiophene (BDT) unit as conjugated spacer has been synthesized and successfully used for dye-sensitized solar cells (DSSCs). The length of the π-conjugated spacers has a strong impact on electro-optical properties of these dyes, leading to the conversion efficiencies ranging from 4.17 to 5.68% under AM 1.5 G irradiation. This result indicates that the BDT unit is a promising candidate in organic sensitizers.
authors.affiliation: Department of Applied Chemistry, Tianjin University of Technology, Tianjin 300384, People's Republic of China.
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Hao
authors.forename: Mao
authors.initials: M
authors.lastname: Liang
authors.forename: Xiaobing
authors.initials: X
authors.lastname: Cheng
authors.forename: Xiaoqing
authors.initials: X
authors.lastname: Pian
authors.forename: Zhe
authors.initials: Z
authors.lastname: Sun
authors.forename: Song
authors.initials: S
authors.lastname: Xue