Zhi-hua LENG, Zhe TAN, Shu-hong LIU. Tunable Photoluminescence Properties and Energy Transfer of Ba3YB9O18:Tb3+, Eu3+ Phosphors. [J]. Chinese Journal of Luminescence 42(1):83-90(2021)
Zhi-hua LENG, Zhe TAN, Shu-hong LIU. Tunable Photoluminescence Properties and Energy Transfer of Ba3YB9O18:Tb3+, Eu3+ Phosphors. [J]. Chinese Journal of Luminescence 42(1):83-90(2021) DOI： 10.37188/CJL.20200260.
Tunable Photoluminescence Properties and Energy Transfer of Ba3YB9O18:Tb3+, Eu3+ Phosphors
A series of Ba,3,YB,9,O,18,:Tb,3+, Eu,3+, phosphors with tunable photoluminescence were successfully prepared by solid state reaction. X-ray diffraction(XRD) and transmission electron microscopy(TEM) were utilized to investigate the phase purity and crystal structure of the as-obtained phosphors. The XRD refinement results demonstrate that the linear structural evolution of Ba,3,YB,9,O,18,:Tb,3+, Eu,3+, solid-solutions obeys excellent Vegard's rule when Y,3+, were substituted by Eu,3+, ions. Moreover, the energy transfer process from Tb,3+, to Eu,3+, in Ba,3,YB,9,O,18,:Tb,3+, Eu,3+, phosphors was verified by emission spectra and decay curves. The energy transfer mechanism from Tb,3+, to Eu,3+, was proved to be the electric dipole-dipole interaction. Due to the energy transfer process from Tb,3+, to Eu,3+, the color tones can be gradually adjusted from green to red with increasing Eu,3+, doping content. These results manifest that the as-synthesized Ba,3,YB,9,O,18,:Tb,3+, Eu,3+, phosphors may find potential applications for UV excited solid state lighting.
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