A high mobility conjugated polymer based on dithienothiophene and diketopyrrolopyrrole for organic photovoltaics

Abstract

A new low bandgap conjugated polymer (PDTTDPP) comprising dithieno[3,2-b:2′,3′-d]thiophene (DTT) and diketopyrrolo[3,4-c] pyrrole (DPP) showed an outstanding hole mobility of 0.60 cm2 V -1 s-1 in organic field effect transistors without post-treatment, and a promising power conversion efficiency of 6.05% with PC71BM in organic photovoltaics. © 2012 The Royal Society of Chemistry.