Host-sensitized phosphorescence of Mn4+, Eu3+, and Yb3+ in MgAl2Si2O8
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, vol.110, no.3, pp.1179-1183, 2012 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 110 Issue: 3
- Publication Date: 2012
- Doi Number: 10.1007/s10973-011-2118-0
- Journal Name: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.1179-1183
- Keywords: Mn4+, Eu3+, Yb3+, MgAl2Si2O8 phosphors, Aluminosilicates
- Open Archive Collection: AVESIS Open Access Collection
- Erciyes University Affiliated: Yes
Abstract
Mn4+ doped and Eu3+, Yb3+ co-doped MgAl2Si2O8-based phosphors were prepared by conventional solid state reaction at 1,300 A degrees C. They were characterized by thermogravimetry, differential thermal analysis, X-ray powder diffraction, photoluminescence, and scanning electron microscopy. The luminescence mechanism of the phosphors, which showed broad red emission bands in the range of 600-715 nm and had a different maximum intensity when activated by UV illumination, was discussed. Such a red emission can be attributed to the intrinsic (2) E -> (4) A (2) transitions of Mn4+.