Luminescence of ZrO_2 Nanocrystals

摘要

The luminescence of nanocrystalline tetragonal and cubic ZrO_2 has been investigated. The tetragonal undoped ZrO2 revealed two luminescence bands, at ～2.0 eV and 2.7 eV , but only one band at ～2.7 eV was observed from cubic ZrO_2. This luminescence was shown to be intrinsic. The regular zirconium-oxygen complex excited state is suggested as being responsible for intrinsic luminescence.