Luminescence properties and mechanism of Zn1.92−xBaxSi1−yTiyO4:0.08Mn phosphors in VUV region |
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Authors: | Yan Hao Lixian Song |
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Institution: | a State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, China b Department of Materials Science, Lanzhou University, Lanzhou 730000, China |
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Abstract: | The present commercial phosphor Zn2SiO4:Mn2+ requires further improvement because of its long decay time. In this work, the co-doping effects of Ba2+ and Ti4+ upon emission intensity and decay time were investigated. Ba2+ and Ti4+ cations have favorable influences on the photoluminescent properties. When doped with appropriate amount of Ba2+, the intensity of green emission was increased 12% and the decay time was shortened 18%. When doped with appropriate amount of Ti4+, the luminescence intensity was enhanced a little, and the decay time was shortened 14%. Ba2+ and Ti4+ were co-doped in Zn2SiO4:Mn2+ system, the luminescence intensity was enhanced 18%, and the decay time was shortened sharply (about 31%). |
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Keywords: | Sol-gel preparation Phosphors Luminescence |
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