Advanced Materials, Vol.24, No.4, 538-538, 2012
Highly Crystalline and Low Bandgap Donor Polymers for Efficient Polymer Solar Cells
A highly crystalline and low bandgap donor polymer, EI-PFDTBT, is developed by inserting ethylene bridging units to ensure a coplanar configuration between the side chains and the main chain. Polymer solar cells based on the EI-PFDTBT and PC(71)BM blends spincoated at elevated temperatures exhibit a power conversion efficiency of 5.1%.
Keywords:polymer solar cells;conjugated polymers;crystallinity;coplanar configuration;high-temperature solution processing