Design of the terminal group of small molecule acceptors for controlling the interaction with polymer donor and their photovoltaic performances

Abstract

Various studies have been studied to develop the materials used for the photoactive layer of organic solar cells. Most studies are related to the core or end groups of non-fullerene small molecules. In contrast, in this study, three new small molecules with side chain changes which are linear alkoxy benzene were developed, and by analyzing the interaction between the end group of the electron donor and the electron acceptor, an ideal photoactive layer was formed and a high efficient organic solar cell was realized.