Newly invented solar cells (IMAGE) City University of Hong Kong Caption In collaboration with Professor Nicholas Long from Imperial College, Dr Zhu Zonglong’s team from CityU ingeniously added ferrocenes to perovskite solar cells as an interface between the light-absorbing layer and the electron transporting layer, achieving a breakthrough. Credit City University of Hong Kong Usage Restrictions Image must be used with appropriate caption and credit. License Original 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.