Photoluminescence of GdVO₄:Eu³⁺, Al ³⁺ Phosphors under VUV Excitation

Abstract

The microstructure and photoluminescence properties of Gd0.94-xAlxEu0.06VO4 (0≤x≤0.04) phosphors with various Al3+ contents were investigated. The phosphors showed a nanocrystalline nature and a high-quality powder characteristic. The crystallite sizes of the phosphors were calculated to be 46-48 nm. The annealed Gd0.94-xAlxEu0.06VO4 phosphors crystallized in the tetragonal structure. In the emission spectra, several emission peaks were observed over the measured wavelength range (500-750 nm), which were caused by the difference in the transitions of Eu3+ ions, depending on the local symmetry (5D0 → 7Fj, j = 1, 2, 3, and 4). The strongest emission peak was located at 619 nm, providing a high-purity red emission. The doped Al3+ yielded significantly enhanced the emission intensity. The most intense high-purity red emission was obtained for Gd0.93Al0.01Eu0.06VO4.

Study of the high pressure effect on nanoparticles GdVO4: Eu3+optical properties

“…On the other hand, rare earth vanadates have been studied extensively in the last decade, and they are of great interest as hosts for luminescence materials (6)(7)(8). The properties of nanostructure are highly structure-dependent.…”

Synthesis of Metal Ion Doped Sr2CeO4 by Hydrothermal Method and Its Luminescent Properties

“…Many researches showed that impurity ions could produce a change of symmetry and vibration modes around the luminescence center to result in the enhancement of the luminescence intensity [7][8][9] . Therefore, in this paper, Sr2CeO4 and impurity ions doped Sr2CeO4:M (M = Mg, Ca, Zn, Al) phosphors were synthesized by hydrothermal method using (NH4)2CO3 as the precipitation agent.…”