Diethyl 2,5-Dibromoterephthalate is a donor used in solar cells. It is synthesized by reacting pyrrole with triamine to form a diethyl ester. This product is an anti-aging agent that inhibits the production of reactive oxygen species (ROS) and blocks the formation of advanced glycation end products (AGEs). Diethyl 2,5-Dibromoterephthalate has been shown to be effective as an optical acceptor in solar cells and can be used in perovskite solar cells.