The crystallinity and the photoluminescent properties of spray pyrolized ZnO phosphor containing Eu and Eu ions |
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Authors: | Camellia Panatarani |
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Institution: | Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, Kagamiyama 1-4-1, Higashi Hiroshima 739-8527, Japan |
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Abstract: | A europium doped ZnO (ZnO:Eu) particle was directly synthesized by the spray pyrolysis method. The crystal structure of samples was designated by the europium ion and the synthesis temperature. We identified the coexistence of Eu2+ and Eu3+ ions in the as prepared ZnO, which was strongly influenced by the doping concentration and the synthesis temperature. With addition of a 0.5 mol% concentration of europium ions, only the Eu2+ ion existed in particles, while both Eu2+ and Eu3+ ions existed in sample using 1 mol% or higher concentration of europium ions. Changing the wavelength of the excitation source, we also found that both the blue and red luminescence can be obtained. |
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Keywords: | A Optical materials B Chemical synthesis C X-ray diffraction D Crystallinity D Luminescence |
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