Publication Date:
2014-08-23
Description:
Eu 2+ and Mn 2+ coactivated β– Ca 3 ( PO 4 ) 2 (TCP) phosphors have been prepared by high-temperature solid-state reaction. The site occupation and photoluminescence properties of Eu 2+ and Mn 2+ have been identified and discussed in detail. The energy transfer from Eu 2+ to Mn 2+ in TCP: Eu 2+ , Mn 2+ phosphors has been validated and demonstrated to be a resonant type via a dipole-quadrupole mechanism, and the critical distance ( R C ) calculated by concentration quenching method is 21.76 Å. A color-tunable emission from violet-blue to red in TCP: Eu 2+ , Mn 2+ phosphors can be realized via the energy transfer from Eu 2+ to Mn 2+ ions.
Print ISSN:
0002-7820
Electronic ISSN:
1551-2916
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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