Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1262252 | Journal of Rare Earths | 2008 | 4 Pages |
Abstract
Rare earth ions doped gadolinium oxybromide phosphors GdOBr:RE3+ (RE=Eu, Tb, Ce) were synthesized by the method of solid-state reaction at high temperature, and the VUV-VIS spectroscopic properties of the phosphors were systematically investigated. Under the excitation of VUV or UV source, the phosphors doped with Eu3+ and Tb3+ show a bright and sharp emission at around 620 nm corresponding to the forced electric dipole 5D0 → 7F2 transition of Eu3+, and at around 544 nm corresponding to the 5D4 → 7F5 transition of Tb3+, respectively. For GdOBr:Ce3+, a broader and intense emission spanned 370–500 nm corresponding to the d-f transition of Ce3+ was observed. The excitation spectra were also analyzed.
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