Credit: Oak Ridge National Laboratory, U.S. Dept. of Energy. Image by Xufan Li and Chris Rouleau
Light drives the migration of charge carriers (electrons and holes) at the juncture between semiconductors with mismatched crystal lattices. These heterostructures hold promise for advancing optoelectronics and exploring new physics. The schematic’s background is a scanning transmission electron microscope image showing the bilayer in atomic-scale resolution.