Luminescence characterization and electron beam induced chemical changes on the surface of ZnAl2O4:Mn nanocrystalline phosphor

▶ Stable green cathodoluminescence (CL) obtained under low voltage electron beam excitation. ▶ Auger and XPS probed chemical changes on the surface of the ZnAl2O4:Mn2+. ▶ A thermodynamically stable Al2O3 layer stabilises the CL.