Photoluminescence and thermoluminescence characteristics of Sr3B2O6:Eu2+ yellow phosphor |
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| Authors: | Tuyen Ho Van Son Nguyen Manh Quang Vu Xuan Sengthong Bounyavong |
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| Institution: | 1. Department of Natural Science, Duy Tan University, Danang, Vietnam;2. Department of Physics, University of Sciences, Hue University, Hue, Vietnam;3. Institute of Research and Development, Duy Tan University, Danang, Vietnam |
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| Abstract: | Sr3B2O6: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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| Keywords: | europium Sr3B2O6 concentration quenching thermoluminescence combustion method |
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