Concentration and Cyrstalline Phase Effects on the Spectroscopic Properties of Sol-Gel Synthesized Er³⁺:Y₂Si₂O₇ Nanopowders

Abstract

Nanosized yttrium disilicate powders activated with trivalent erbium ions were produced by Sol-Gel known as wet chemical process. The structure and morphology of the synthesized powders were characterized by using X-ray diffraction spectroscopy (XRD), Transmission electron microscopy (TEM) and Photoluminescence spectroscopy. The XRD analysis revealed that the formation of triclinic -Y2Si2O7 and monoclinic -Y2Si2O7 polymorphs were obtained at 1050 and 1450 , respectively. The photoluminescence properties were also investigated in terms of sintering temperature and doping effect on different polymorphs. Sol-Jel ile Sentezlenmis Er

Investigation of Nd3+:Y2Si2O7 Phosphors Using Photoluminescence and Positron Annihilation Lifetime Spectroscopy

“…[1][2][3][4][5] Y 2 Si 2 O 7 is a compound of binary Y 2 O 3 -SiO 2 systems with great thermal strength and chemical stability, a low dielectric coefficient, a low linear quantity of thermal expansion, a wide band gap, and low thermal conductivity. 1,[6][7][8][9][10] It is also the most effective host lattice for RE 3+ ions, which effortlessly substitutes for Y 3+ ions. 1 Due to its complex high temperature, the structural phases of polymorphism were obtained earlier in the phase forms of y, z, α, β, γ, and δ; 11 however, due to its intricate polymorphous structure, it is quite problematic to obtain an uncontaminated phase of yttrium disilicate.…”