SOLAR 2 (IMAGE) Rice University Caption Rice University postdoctoral researcher Yilin Li shows a glowing windowpane with a conjugated polymer center that serves as a waveguide, sending certain frequencies of light to the edges, where it can be absorbed by solar cells. Credit Yilin Li/Rice University 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.