Abstract
In this work, the fluorescence and x-ray excited optical luminescence of zirconia (ZrO2) pellets and thin films doped with the impurity of Er2O3 were investigated. The experimental results of XRD show that the undoped ZrO2 samples have more composition of monoclinic structure than the doped samples.For the optical luminescence, all samples exhibited a broad emission band extending from 400 to 600 nm, and the two maximum peaks appeared at around 460 and 503 nm for pellet samples; however, the 300, 540, and 670 nm emission bands were observed for the Er2O3 doping. The 540 nm emission band is the relaxation of the electron from the excited state to the ground state of Er ion. The 670 nm emission band is the relaxation of the electron from the excited state to the ground state of Er ion .From the photoluminescence of the x-ray absorption of zirconia and zirconia doped with Er2O3 shows that the optical luminescence is inactive, when the x-ray absorption near the zirconium LⅢ-edge and oxygen K-edge of ZrO2 samples, however, the optical luminescence is active, when the x-ray absorption near the oxygen K-edge of Er2O3 dopant.