perovskite photocathode (IMAGE)

Rice University

perovskite photocathode

Caption

Artist's representation of a halide perovskite photocathode. Researchers at Rice University and Los Alamos National Laboratory found halide perovskite semiconductors (silver) treated with a thin layer of cesium (blue-green) could be tuned to emit free electrons (gray) over both the visible and ultraviolet spectrum (colored arrows), and that a fresh layer of cesium could regenerate degraded photocathodes.

Credit

Image courtesy A. Mohite/Rice University

Usage Restrictions

Must credit: "A. Mohite/Rice University"

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.