| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1497391 | Optical Materials | 2007 | 4 Pages |
Abstract
In this paper, Y2O2S:Eu phosphors doped with Mg2+, Ca2+, Sr2+, Ba2+, Ti4+ were studied by photoluminescent spectra, afterglow spectra, XRD, decay curve, relative brightness and thermoluminescent spectra. The results show that those dopants do not change crystal structure of the host, but influence afterglow properties and relative brightness. Decay curve comprised of a fast and a slow part was found well exponential. It is considered that presence of shallow trap levels induced by interstitial oxygen atoms is responsible for the fast decay process while the deeper traps control the slow decay behavior.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Shuanglong Yuan, Yunxia Yang, Bin Fang, Guorong Chen,