The Influence of Polymer Purification on Photovoltaic Device Performance of a Series of Indacenodithiophene Donor Polymers - Ashraf,RS; Schroeder,BC; Bronstein,HA; Huang,Z; Thomas,S; Kline,RJ; Brabec,CJ; Rannou,P; Anthopoulos,TD; Durrant,JR; McCulloch,I (ADVANCED MATERIALS, 2013)