Фотолюминесцентные свойства YSZ керамики активированной европием

Abstract

In the present study in search of optimal conditions for the synthesis by the method of sparkplasma sintering of YSZ ceramics with REE dopants in various concentrations, in order to achieve a complex of the best optical-luminescent properties, a series of samples synthesized under similar conditions with variations in atmospheric annealing temperatures from 700°С to 1300°C were investigated. Photoluminescence and photoexcitation of ceramic samples were measured at room temperature using a fluorescence spectrophotometer using a 150 W Xe lamp as an excitation source. From the photoluminescence spectra of YSZ ceramics with REE dopants, we can conclude that in samples subjected to atmospheric annealing at 700 ° C in the region of 450 nm there is an intense intrinsic luminescence of zirconium dioxide, and in samples subjected to atmospheric annealing at 1100 ° C in the region of 600 nm there is a characteristic emission band of europium ion. From the photoexcitation spectra of YSZ ceramics with REE dopants, it can be noted that in samples subjected to atmospheric annealing at 1300 ° C, the maximum luminescence intensity is observed, also the maximum luminescence intensity is mainly observed in the sample with a REE content (Eu[2]O[3]) of 0.5 mass%.