Preparation and luminescence characterization of new carbonate (Y 2 (CO 3 ) 3 ¡PnH 2 O:Eu 3+ ) phosphors via the hydrothermal route
Journal
Journal of Alloys and Compounds
Journal Volume
509
Journal Issue
41
Pages
10014-10019
Date Issued
2011
Author(s)
Abstract
A new Eu 3+ -activated Y 2 (CO 3 ) 3 ¡PnH 2 O phosphor was successfully prepared via the hydrothermal process using urea as a reaction agent. Y 2 (CO 3 ) 3 ¡PnH 2 O:Eu 3+ phosphors displayed an intense red emission at 615 nm due to the 5 D 0 ¡÷ 7 F 2 transition of Eu 3+ ions under 254 nm excitation. The intensity of this emission was significantly increased with a rise in the hydrothermal temperatures. The study of photoluminescence properties demonstrated that Y 3+ ions were replaced by Eu 3+ ions in the host lattice at the 9-coordination sites. With an increase in heating temperatures, the morphology of Y 2 (CO 3 ) 3 ¡PnH 2 O:Eu 3+ powders changed from a spherical to a rod-like shape. Calcination at elevated temperatures resulted in thermal decomposition of Y 2 (CO 3 ) 3 ¡PnH 2 O:Eu 3+ to form Y 2 O 3 :Eu 3+ . The formed Y 2 O 3 :Eu 3+ powder exhibited a rod-like morphology with an intense red emission. ? 2011 Elsevier B.V.
Subjects
Hydrothermal
Luminescence
Phosphor
SDGs
Type
journal article