Synthesis and Luminescence Properties of ZrO₂:Gd³⁺, RE³⁺(RE = Sm³⁺ ,Er³⁺) Phosphors

Abstract

In the present study, ZrO2co-doped with Gd3+/Sm3+and Gd3+/Er3+ions have been synthesized using Pechini method. Phase composition, morphology and photoluminescence properties of the synthesized phosphors were investigated by using X-ray powder diffraction (XRD), differential thermal analysis/thermal gravimetry (DTA/TG), scanning electron microscopy (SEM) and photoluminescence spectrofluorometer (PL). After heating at 1200 °C, XRD revealed that the phosphors were crystallized as monoclinic and tetragonal multiphases. SEM images indicated that the phosphors consist of fine and spherical grains with a size around 200 nm to 250 nm. Luminescence studies of these phosphors have been carried out on the emission and excitation, along with lifetime measurements

Photoluminescence and thermoluminescence properties of pure and rare‐earth‐doped ZrO2 prepared by Pechini‐type sol–gel

“…The dissimilarity in the intensity of TL for doped and undoped ZrO 2 is explained as due to the difference in the number of the luminescence centre. We argued that the rare‐earth dopants [71, 81, 82] increase oxygen vacancies [83] and thus the number of luminescence centres rises [42, 77, 84–86].…”

Significantly enhanced mechanoluminescence from Nb5+ co-doped ZrO2:Sm3+via a high valence ion doping strategy

“…13 Various studies have been conducted in recent years to explore the photoluminescence properties of ZrO 2 doped with different ions such as Sm 3+ , Er 3+ , Eu 3+ , Tb 3+ , and Ti 4+ ions. 14–16 The ML properties of ZrO 2 :Ti have also been noted. Akiyama et al 17 observed strong green light in the ZrO 2 :Ti 4+ phosphor, and realized full recovery of ML intensity under UV irradiation.…”