Radioluminescence study of rare earth doped some yttrium based phosphors
No Thumbnail Available
Date
2012
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
This paper reports the luminescence emission spectra of Y(Ta,Nb)O 4 activated by rare earth ions such as Eu3+ and Tb 3+. The influence of these rare earth ions on the radioluminescence (RL) of yttrium niobate and tantalate phosphors was investigated. The luminescent properties were studied under X-ray and preliminary RL measurements to further evaluate prepared materials. The emission centers of the rare earth activators (Eu3+, Tb3+) were found to contribute efficiently to the total luminescence. With their various luminescence chromaticities, these rare earth activated phosphors are promising materials for solid-state lighting applications as well as for X-ray intensifying screens in medical diagnosis, providing the broad band variation of visible RL from blue to red. © 2012 Elsevier B.V. All rights reserved.
Description
Keywords
Diagnosis , Emission spectroscopy , Lighting , Luminescence , Metal ions , Niobium compounds , Phosphors , X ray screens , X rays , Yttrium , Luminescence emission , Niobates , Radio-luminescence , Rare earth activated phosphors , Rare-earth activators , Solid-state lighting application , X-ray intensifying screens , Yttrium tantalates , Rare earths