Photoluminescence of Eu{sup 3+}-doped triple phosphate Ca{sub 8}MgR(PO{sub 4}){sub 7} (R=La, Gd, Y)
- School of Material Engineering, Soochow University, 178 GanJiang East Road, Suzhou 215021 (China)
- Department of Physics, Changwon National University, Changwon 641-773 (Korea, Republic of)
- Department of Photonics, Silla University, Busan 617-736 (Korea, Republic of)
Eu{sup 3+}-doped triple phosphate Ca{sub 8}MgR(PO{sub 4}){sub 7} (R=La, Gd, Y) was synthesized by the general high-temperature solid-state reaction. Excitation and emission spectra as well as luminescence decay were used to characterize the phosphors. Photoluminescence excitation and emission spectra showed that the phosphor could be efficiently excited by UV-vis light from 260 to 450 nm to give bright red emission assigned to the transition ({sup 5}D{sub 0}{yields}{sup 7}F{sub 2}) at 612 nm. The richness of the red color has been verified by determining their color coordinates (X, Y) from the CIE standard. - Graphical abstract: The RT luminescence spectra of Ca{sub 8}MgR(PO{sub 4}){sub 7} (R=La, Gd, Y) under 254 nm excitation using lamp source with the same conditions. The red emission lines at 612 nm originating from the electric dipole transition {sup 5}D{sub 0}-{sup 7}F{sub 2} is the dominant luminescence in the spectrum. It is found that the emission intensity of Eu{sup 3+} ions in Ca{sub 8}MgR(PO{sub 4}){sub 7} (R=La, Gd, Y) decreases in the sequence of R=Gd>Y>La.
- OSTI ID:
- 21128426
- Journal Information:
- Journal of Solid State Chemistry, Vol. 181, Issue 9; Other Information: DOI: 10.1016/j.jssc.2008.04.044; PII: S0022-4596(08)00220-X; Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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