Cadmium-Telluride Solar Cells (IMAGE) Colorado State University Caption Photoluminescence (red) and second harmonic generation (grayscale) from pure cadmium-telluride solar cells, imaged simultaneously. Standard resolution is on the left, and enhanced resolution, on the right, was captured by a CSU custom-built microscope. Credit Jeffrey Field/Colorado State 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.