White-Light-Emitting Phosphate Phosphors of SrZn2(PO4)2: Eu2+, Mn2+ Synthesized through Combustion Process
The SrZn2(PO4)2: Eu2+, Mn2+ phosphors were synthesized through combustion process with varying mixture ratio of Eu2+, Mn2+. The SrZn2(PO4)2: Eu2+, Mn2+ phosphor presents three emission bands under 365nm radiation: the blue emission band of 416 nm from Eu2+ occupying the Sr2+ site, the green emission band of 538 nm and the red emission band of 630 nm from Mn2+ occupying two different Zn2+ sites. Compared with the SrZn2(PO4)2: Eu2+, Mn2+ phosphor prepared through solid state reaction, the luminous intensity of the phosphor is greatly improved through the combustion reaction. White emission light with a high color rending index of 84.7 can be obtained from the phosphor of SrZn2(PO4)2: Eu2+, Mn2+, and the emission color tone of the phosphor varies from blue, white, and finally yellow by increasing the ratio of the concentrations of Eu2+ and Mn2+.
Rongming Wang, Ying Wu and Xiaofeng Wu
X. S. Yan et al., "White-Light-Emitting Phosphate Phosphors of SrZn2(PO4)2: Eu2+, Mn2+ Synthesized through Combustion Process", Materials Science Forum, Vol. 688, pp. 344-348, 2011