Organic semiconducting materials have demonstrated attractive light-absorption and photocurrent-generation functions due to their delocalized π electrons as well as intra-molecular and inter-molecular charge separation proceses. On the other hand, organic semiconducting materials have easy property tuning, are mechanically exible, and have large-area thin film formation properties. As a result, organic materials have become potential candidates in solar energy applications. This article will review critical energy-conversion processes in organic solar cells with the focus on single and triplet photovoltaic responses.
Bibliographical noteFunding Information:
This research was supported by the Air Force Office of Scientific Research (FA9550-06-10070) (Dr. Charles Lee, Program Officer), National Science Foundation Career Award (ECCS-0644945), and Center for Materials Processing at the University of Tennessee.