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Tunable afterglow color in Eu2+ and Dy3+ co-activated alkaline earth feldspar solid solutions phosphors
- Source :
-
Journal of Luminescence . May2007, Vol. 124 Issue 1, p140-142. 3p. - Publication Year :
- 2007
-
Abstract
- Abstract: The Eu2+ and Dy3+ co-activated Ca–Sr feldspar solid solution compounds, (Ca0.98− x Sr x )Al2Si2O8:Eu0.01,Dy0.01 (), have been prepared by solid-state reaction in weak reductive atmosphere. The fluorescence spectra showed that the emission peaks of these phosphors shifts to shorter wavelength with an increase of Sr2+ solid solution quantity and correspondingly the afterglow color changes from blue to purple. All the changes can be attributed to the various crystal fields around Eu2+ ions. The afterglow with special short wavelength in near ultraviolet region can be obtained by adjusting the host chemical composition. [Copyright &y& Elsevier]
- Subjects :
- *SOLID solutions
*FLUORESCENCE
*CRYSTALLIZATION
*SOLUTION (Chemistry)
Subjects
Details
- Language :
- English
- ISSN :
- 00222313
- Volume :
- 124
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of Luminescence
- Publication Type :
- Academic Journal
- Accession number :
- 23228945
- Full Text :
- https://doi.org/10.1016/j.jlumin.2006.02.015