We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Synthesis and Optical Properties of R<sub>2</sub>O<sub>2</sub>S:Ln<sup>3+</sup> (R = Gd, Y; Ln = Eu, Tb).
- Authors
Sal'nikova, E. I.; Denisenko, Yu. G.; Andreev, O. V.
- Abstract
An (Y0.95Eu0.05)2O2S solid solution (hexagonal crystal system, sp. gr. P3m1, a = 3.810 Å, c = 6.62 Å, V = 83.269 Å3) has been prepared via hydrogen reduction of the (Y0.95Eu0.05)2(SO4)3 sulfate, followed by sulfidation of the reaction products. Heat treatment in flowing H2S of (Gd0.95Tb0.05)2(SO4)3 and (Gd0.95Tb0.05)2O3 prepared via cohydrolysis of gadolinium and terbium sulfates in a water–alcohol solution of urea and annealed in an inert atmosphere has been shown to yield (Gd0.95Tb0.05)2O2S (hexagonal crystal system, a = 3.852 Å, c = 6.668 Å, V = 89.53 Å3). We have determined the phase composition of the synthesized samples, investigated their morphology, and examined the effect of the synthesis method on the shape and size of their particles. Investigation of the optical properties of the synthesized phosphors has demonstrated that all of them exhibit efficient luminescence in the green spectral region under UV excitation.
- Subjects
TERBIUM; OPTICAL properties; HEXAGONAL crystal system; RARE earth metals; GADOLINIUM; SOLID solutions; HEAT treatment
- Publication
Inorganic Materials, 2022, Vol 58, Issue 5, p516
- ISSN
0020-1685
- Publication type
Article
- DOI
10.1134/S0020168522050089