Photovoltaic performance of an ultrasmall band gap polymer

Arjan P Zoombelt; Marta Fonrodona; Martijn M Wienk; Alexander B Sieval; Jan C Hummelen; René A J Janssen

doi:10.1021/ol802839z

Photovoltaic performance of an ultrasmall band gap polymer

Org Lett. 2009 Feb 19;11(4):903-6. doi: 10.1021/ol802839z.

Authors

Arjan P Zoombelt¹, Marta Fonrodona, Martijn M Wienk, Alexander B Sieval, Jan C Hummelen, René A J Janssen

Affiliation

¹ Molecular Materials and Nanosystems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.

PMID: 19170621
DOI: 10.1021/ol802839z

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.