Low-bandgap conjugated polymer for high efficient photovoltaic applications†
Abstract
We investigate the morphological and performance of organic photovoltaics based on blended films of alternating poly(thiophene–phenylene–thiophene) and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM). The resulting fine-scale phase separation leads to enhanced performance and the highest power efficiency (6.4% under