Testing New Solar Cell Materials (IMAGE) Worcester Polytechnic Institute Caption A close-up of a sample solar photovoltaic cell being tested in the NanoEnergy Lab at Worcester Polytechnic Institute (WPI). The lab is developing new materials that could replace silicon, potentially lowering the cost of making solar cells while improving their efficiency. Credit Worcester Polytechnic Institute (WPI) Usage Restrictions None 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.