Polymer Solar Cell (IMAGE) University of Chicago Caption This polymer solar cell consists of a new polymer, called PID2, which was developed in the laboratory of Luping Yu, professor in chemistry at the University of Chicago. The new polymer improves the efficiency of electrical power generation by 15 percent when added to a standard polymer-fullerene mixture. Credit Andrew Nelles Usage Restrictions News organizations may use this image in connection License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.