Improved Film Morphology Reduces Charge Carrier Recombination into the Triplet Excited State in a Small Bandgap Polymer-Fullerene Photovoltaic Cell

摘要

Photovoltaic energy conversion provides a renewable source of energy that may meet the global energy demand. In particular, polymer photovoltaics are of interest because these may be produced in large surface areas with economic use of raw materials. This prospect has spurred research on polymer solar cells and recently cells with high efficiency and good coverage of the solar spectrum have been demonstrated.