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Preparation and Luminescence Properties of La7O6(BO3)(PO4)2: Tb3+/Eu3+ Phosphors |
Author Name | Affiliation | E-mail | LI Shi-Long | Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China | | LÜ Chao | Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China | | MIN Xin | Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China | minx@cugb.edu.cn | FANG Ming-Hao | Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China | | HUANG Zhao-Hui | Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China | | LIU Yan-Gai | Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China | |
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Abstract: La7O6(BO3)(PO4)2:Tb3+ and La7O6(BO3)(PO4)2:Eu3+ phosphors were prepared by a high-temperature solid state reaction, and the phase behavior, crystal structure, luminescence properties and thermal stability were investigated. The La7O6(BO3)(PO4)2:Eu3+ phosphors emitted a red light under the ultraviolet excitation. The emission maximum was at 616 nm, corresponding to the 5D0-7F2 transition of Eu3+. The concentration quenching pheno-menon was observed when the doping concentration of Eu3+ ion was beyond 0.08. The corresponding CIE coordinates were calculated to be (0.610 2, 0.382 3). The La7O6(BO3)(PO4)2:Tb3+ phosphors emitted a green light under the ultraviolet excitation. The emission maximum was at 544 nm, corresponding to the 5D4-7F5 transition of Tb3+. Concentration quenching phenomenon was observed when the concentration of Tb3+ ion was beyond 0.15, and its CIE coordinates are calculated to be (0.317 7, 0.535 2). Based on the analysis of temperature-dependent emission spectra of La7O6(BO3)(PO4)2:Tb3+ and La7O6(BO3)(PO4)2:Eu3+ phosphors, it can be found that both phosphors possess good thermal stability. |
Keywords: phosphors photoluminescence properties Eu3+ Tb3+ La7O6(BO3)(PO4)2 |
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LI Shi-Long,LÜ Chao,MIN Xin,FANG Ming-Hao,HUANG Zhao-Hui,LIU Yan-Gai.Preparation and Luminescence Properties of La7O6(BO3)(PO4)2: Tb3+/Eu3+ Phosphors[J].Chinese Journal of Inorganic Chemistry,2017,33(5):761-768. |
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