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- W3152871117 abstract "• Structure, site-occupancy and luminescence of Na 3 SrMg 11 (PO 4 ) 9 :Eu 2+ /Mn 2+ /Tb 3+ were studied. • Broad excitation band and wide-gamut-coverage emission could be achieved by tuning Eu 2+ /Mn 2+ /Tb 3+ ratio. • The optimal blue/green/red phosphors exhibit high quantum efficiencies with IQE>60%. A series of tricolor-emitting fifillowite-structured Eu 2+ /Tb 3+ /Mn 2+ -doped Na 3 SrMg 11 (PO 4 ) 9 (NSMP) phosphors were synthesized. Its structural parameter, luminescent properties, and energy transfer behaviors were systematically studied. The optimal NSMP: Eu 2+ , Tb 3+ /Mn 2+ phosphors exhibit bright RGB emission bands, i.e. blue emission from Eu 2+ , while green and red emission from sensitized Tb 3+ and Mn 2+ , respectively. Eu 2+ -Tb 3+ /Mn 2+ energy transfer processes are verified as a resonant type with ET efficiency of>80%. The emitting colors of NSMP: Eu 2+ , Tb 3+ , Mn 2+ phosphors could be adjusted from blue (0.156, 0.077) to green (0.322, 0.552), to red (0.667, 0.299) by increasing Tb 3+ /Mn 2+ doping content. The internal quantum efficiency of blue NSMP:0.04Eu 2+ , green NSMP:0.04Eu 2+ , 0.40Tb 3+ and red NSMP:0.04Eu 2+ , 1.40Mn 2+ phosphor is estimated at 64.46%, 78.17% and 78.03%, respectively. A significant leap of emission thermal-stability is found in Na 3 SrMg 11 (PO 4 ) 9 : Eu 2+ after co-activation with Mn 2+ /Tb 3+ ions. In general, the emitting colors and energy transfer could be effectively regulated in the Na 3 SrMg 11 (PO 4 ) 9 host, and a general method for photoluminescence tuning is demonstrated." @default.
- W3152871117 created "2021-04-26" @default.
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- W3152871117 date "2021-09-01" @default.
- W3152871117 modified "2023-10-17" @default.
- W3152871117 title "Bright and thermal-stable RGB emission realized by Eu2+-Tb3+/Mn2+ energy transfer in Na3SrMg11(PO4)9" @default.
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- W3152871117 doi "https://doi.org/10.1016/j.jallcom.2021.159975" @default.
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