Fullerenes and New Acceptors for Organic Solar Cells

Organic solar cells (OSCs) have attracted considerable attention and are regarded as a promising alternative for the conversion of solar energy to electricity. Electron acceptor materials are one of the key components of OSCs. During the past decade, acceptor materials for OSCs have made important progress. Fullerenes and their derivatives are the traditional choices and the most successful acceptor materials to date, while new acceptors, such as fused-ring electron acceptors, have become a new hotspot in research on OSCs. This chapter introduces and illustrates the history, development and latest progress of acceptor materials in vacuum-deposited and solution-processed OSCs.