title: New A-A-D-A-A-type electron donors for small molecule organic solar cells.
abstract: Two A-A-D-A-A-type molecules (BCNDTS and BDCDTS), where two terminal electron-withdrawing cyano or dicyanovinylene moieties are connected to a central dithienosilole core through another electron-accepting 2,1,3-benzothiadiazole block, have been synthesized, characterized, and employed as electron donors for small molecule organic solar cells. Vacuum-deposited bilayer and planar mixed heterojunction devices based on BCNDTS and fullerene acceptors (C(60) or C(70)) exhibited decent power conversion efficiencies of 2.3% and 3.7%, respectively.
authors.affiliation: Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan.
authors.forename: Li-Yen
authors.initials: LY
authors.lastname: Lin
authors.forename: Chih-Wei
authors.initials: CW
authors.lastname: Lu
authors.forename: Wei-Ching
authors.initials: WC
authors.lastname: Huang
authors.forename: Yi-Hong
authors.initials: YH
authors.lastname: Chen
authors.forename: Hao-Wu
authors.initials: HW
authors.lastname: Lin
authors.forename: Ken-Tsung
authors.initials: KT
authors.lastname: Wong
mesh_terms: D011211:Electric Power Supplies; D004583:Electrons; D015394:Molecular Structure; D017646:Organosilicon Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D012993:Solar Energy; D013237:Stereoisomerism; D013830:Thiadiazoles / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D017646:Organosilicon Compounds; D013830:Thiadiazoles; C015700:benzo-1,2,3-thiadiazole