title: Diarylindenotetracenes via a selective cross-coupling/C-H functionalization: electron donors for organic photovoltaic cells.
abstract: A direct synthesis of new donor materials for organic photovoltaic cells is reported. Diaryindenotetracenes were synthesized utilizing a Kumada-Tamao-Corriu cross-coupling of peri-substituted tetrachlorotetracene with spontaneous indene annulation via C-H activation. Vacuum deposited planar heterojunction organic photovoltaic cells incorporating these molecules as electron donors exhibit power conversion efficiencies exceeding 1.5% with open-circuit voltages ranging from 0.7 to 1.1 V when coupled with C(60) as an electron acceptor.
authors.affiliation: Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States.
authors.forename: Xingxian
authors.initials: X
authors.lastname: Gu
authors.forename: Wade A
authors.initials: WA
authors.lastname: Luhman
authors.forename: Elisey
authors.initials: E
authors.lastname: Yagodkin
authors.forename: Russell J
authors.initials: RJ
authors.lastname: Holmes
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: Douglas