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Photoluminescence and thermoluminescence characteristics of Sr3B2O6:Eu2+ yellow phosphor
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AbstractSr3B2O6:Eu2+ yellow phosphor was prepared by the combustion method. The crystalline structure, photoluminescence and thermoluminescence properties of Sr3B2O6:Eu2+ were investigated extensively. The X‐ray diffraction result indicates that the Sr3B2O6:Eu2+ phosphor exhibited a rhombohedral crystal structure. The emission spectra under a 435 nm excited wavelength showed an intense broad band peaking at 574 nm, which corresponds to the 4f65d1 → 4f7 transition of Eu2+ ion. There were two different sites of Sr replaced by Eu in host lattice. The concentration quenching process between Eu2+ ions is determined and the corresponding concentration quenching mechanism was verified as dipole‐quadrupole interaction. The glow curve under 3 Gy β‐ ray irradiation had the glow peak at 160°C and the average activation energy was defined as about 0.98 eV. Copyright © 2015 John Wiley & Sons, Ltd.
Title: Photoluminescence and thermoluminescence characteristics of Sr3B2O6:Eu2+ yellow phosphor
Description:
AbstractSr3B2O6:Eu2+ yellow phosphor was prepared by the combustion method.
The crystalline structure, photoluminescence and thermoluminescence properties of Sr3B2O6:Eu2+ were investigated extensively.
The X‐ray diffraction result indicates that the Sr3B2O6:Eu2+ phosphor exhibited a rhombohedral crystal structure.
The emission spectra under a 435 nm excited wavelength showed an intense broad band peaking at 574 nm, which corresponds to the 4f65d1 → 4f7 transition of Eu2+ ion.
There were two different sites of Sr replaced by Eu in host lattice.
The concentration quenching process between Eu2+ ions is determined and the corresponding concentration quenching mechanism was verified as dipole‐quadrupole interaction.
The glow curve under 3 Gy β‐ ray irradiation had the glow peak at 160°C and the average activation energy was defined as about 0.
98 eV.
Copyright © 2015 John Wiley & Sons, Ltd.
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