期刊
RSC ADVANCES
卷 11, 期 40, 页码 24949-24957出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ra04384f
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资金
- Technology Development Program - Ministry of SMEs and Startups (MSS, Korea) [S2800580]
- Korea Technology & Information Promotion Agency for SMEs (TIPA) [S2800580] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ce3+/Tb3+ doped Ba3La2(BO3)(4) phosphors were synthesized by conventional solid state reaction. The optimized composition yielded a cyan-blue emission with high color purity, and the internal quantum efficiency was estimated to be 50%. A dental glazing paste prepared with organic binder, Ba3La2(BO3)(4):Ce3+,Tb3+ phosphors, and low T-g glass showed high chemical stability in acidic aqueous solution (pH = 4) and successfully vitrified at 600 and 700 degrees C.
The Ce3+/Tb3+ doped Ba3La2(BO3)(4) phosphors were synthesized by a conventional solid state reaction method. The synthesized phosphor samples are a single phase of Ba3La2(BO3)(4) and showed angular-shaped fine grains with average particle size from 5 mu m to 10 mu m. The Ba3La2(BO3)(4):Ce3+ phosphors showed an asymmetric broad blue emission under excitation at 365 nm and the Ba3La2(BO3)(4):Tb3+ phosphors exhibited typical green emission assigned to the 4f-4f transition of Tb3+ under excitation at 254 nm. Under near-UV (365 nm) excitation, Ba3La2(BO3)(4):Ce3+,Tb3+ phosphors showed both a blue emission band and green emission peaks due to Ce3+ and Tb3+, respectively. By optimizing the composition, cyan-blue emission with high color purity (CIE chromaticity coordinate values x = 0.2557 and y = 0.3839) was obtained for the Ba3La2(BO3)(4):0.05Ce(3+),0.03Tb(3+) phosphor, and the internal quantum efficiency of the phosphor at the excitation wavelength of 365 nm is estimated to be 50%. The dental glazing paste prepared by mixing organic binder, Ba3La2(BO3)(4):Ce3+,Tb3+ phosphors, and low T-g glass was successfully vitrified when it was heated at 600 and 700 degrees C, and showed high chemical stability of the luminescence properties in acidic aqueous solution (pH = 4).
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