Luminescent properties of SrMg2(PO4)2:Eu2+, and Mn2+ as a potential phosphor for ultraviolet light-emitting diodes
- First Online:
- Cite this article as:
- Guo, C., Luan, L., Ding, X. et al. Appl. Phys. A (2008) 91: 327. doi:10.1007/s00339-008-4407-4
- 513 Downloads
Eu2+ and Mn2+ co-doped SrMg2(PO4)2 phosphors with blue and red two emission bands were prepared by the high temperature solid state method and their luminescent properties have been investigated as a function of activator and co-activator concentrations. Resonance-type energy transfers from Eu2+ to Mn2+ were discovered by directly overlapping the Eu2+ emission spectrum and the excitation spectrum of Mn2+. Efficiencies of energy transfer were also calculated according to the changes of relative intensities of Eu2+ and Mn2+ emission. According to the principle of energy transfer, we demonstrated that the phosphor SrMg2(PO4)2:Eu2+,Mn2+ with double emission bands exhibited a great potential as a phosphor for ultraviolet light-emitting diodes and the relative intensities of blue and red emission could be tuned by adjusting the contents of Eu2+ and Mn2+.