Novel highly efficient non-fullerene acceptor based on naphtho[2,3-b]thiophene diimidefor organic solar cells

摘要

Organic solar cells (OSCs) have seen a tremendous investment and enthusiasm in the recent years due to itsincreasing power conversion efficiency (PCE) of up to 14% and lifetime exceeding a few years. With uniqueproperties such as device flexibility and low cost, OSCs are emerging as an efficient complementary counterpartto inorganic solar cells. However, major limitations such as their poor stability and their limited efficiency stillneed to be surpassed. As most of these limitations come from the use of fullerene derivatives as one of the keyactive materials, non-fullerene acceptors (NFAs) have been receiving a lot of attention [1].