Figure 1. (IMAGE) Science China Press Caption Schematic energy band diagrams of (a) illumination-reaction decoupled n-Si MIS photocathode and (b) traditional p-Si MIS photocathode for HER under illumination. Credit @Science China Press Usage Restrictions Use with credits 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.