Lab on a Chip (IMAGE) Penn State Caption Congcong Wu, associate research professor at Penn State, works with materials that can be inserted into next generation solar cells to improve their efficiency. Perovskite solar cells are an area of intense research due to their potential to offer a more efficient and less expensive alternative to traditional silicon-based solar technology. Credit David Kubarek, Penn State 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.