Plasmonic Sandwich (IMAGE) Princeton University, Engineering School Caption A key part of the new technology is a thin gold mesh, which serves as a "window" layer for the solar cell. Credit Image courtesy of the Chou lab Usage Restrictions Non-commercial use only 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.