Back to Search
Start Over
Synthesis, energy transfer and tunable emission properties of SrSb2O6:Eu3 +, Bi3 + phosphor.
- Source :
-
Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy . Dec2016, Vol. 169, p192-196. 5p. - Publication Year :
- 2016
-
Abstract
- Host SrSb 2 O 6 , SrSb 2 O 6 :Bi 3 + , SrSb 2 O 6 :Eu 3 + , and SrSb 2 O 6 :Eu 3 + , Bi 3 + phosphors are synthesized by solid state reaction method in air. Host SrSb 2 O 6 with excitation 254 nm shows weak green-yellow emission in the range of 320–780 nm due to Sb 5 + → O 2– transition. SrSb 2 O 6 :Bi 3 + phosphor with excitation 365 nm emits green light within the range 400–650 nm owing to the 3 P 1 → 1 S 0 transition of Bi 3 + ion. SrSb 2 O 6 :Eu 3 + phosphor with excitation 254 nm exhibits a systematically varied hue from green to orange-red light by increasing Eu 3 + concentration from 0 to 7 mol%, and that with excitation 394 nm only shows orange-red light. The optimal Eu 3 + concentration is ~ 4 mol% in SrSb 2 O 6 :Eu 3 + phosphor. SrSb 2 O 6 :Eu 3 + , Bi 3 + phosphor with excitation 254 and 394 nm emits orange-red light. Emission intensity of SrSb 2 O 6 :Eu 3 + phosphor may be enhanced > 2 times by co-doping Bi 3 + ion because of the fluxing agent and energy transfer roles of Bi 3 + ion in SrSb 2 O 6 :Eu 3 + , Bi 3 + phosphor. The luminous mechanism of SrSb 2 O 6 :Eu 3 + , Bi 3 + phosphor is analyzed and explained by the simplified energy level diagrams of Sb 2 O 6 2 − group, Bi 3 + and Eu 3 + ions, and energy transfer processes between them. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13861425
- Volume :
- 169
- Database :
- Academic Search Index
- Journal :
- Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy
- Publication Type :
- Academic Journal
- Accession number :
- 116963470
- Full Text :
- https://doi.org/10.1016/j.saa.2016.06.049