title: Photovoltaic performance of an ultrasmall band gap polymer.
abstract: A conjugated polymer (PBTTQ) that consists of alternating electron-rich bithiophene and electron-deficient thiadiazoloquinoxaline units was synthesized via Yamamoto polymerization with Ni(cod)(2) and provides a band gap of 0.94 eV. This represents one of the smallest band gaps obtained for a soluble conjugated polymer. When applied in a bulk heterojunction solar cell together with [84]PCBM as the electron acceptor, the polymer affords a response up to 1.3 microm.
authors.affiliation: Molecular Materials and Nanosystems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
authors.forename: Arjan P
authors.initials: AP
authors.lastname: Zoombelt
authors.forename: Marta
authors.initials: M
authors.lastname: Fonrodona
authors.forename: Martijn M
authors.initials: MM
authors.lastname: Wienk
authors.forename: Alexander B
authors.initials: AB
authors.lastname: Sieval
authors.forename: Jan C
authors.initials: JC
authors.lastname: Hummelen
authors.forename: René A J
authors.initials: RA
authors.lastname: Janssen