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- W2514540103 abstract "Abstract A series of Tb 3+ or/and Bi 3+ doped BaAl 2 Si 2 O 8 phosphors were synthesized via solid-state method. The structure, luminescence properties and thermal stability were investigated. The optimum concentrations of Bi 3+ and Tb 3+ were 1.5 mol% and 7 mol%, respectively. Furthermore, BaAl 2 Si 2 O 8 :0.015Bi 3+ and BaAl 2 Si 2 O 8 :0.07Tb 3+ phosphors emitted blue and green light and the emission color of BaAl 2 Si 2 O 8 :Bi 3+ , Tb 3+ could be tuned from blue to green through the energy transfer. This energy transfer from Bi 3+ to Tb 3+ was confirmed and investigated by photoluminescence spectrum and decay lifetime. With constantly increasing Tb 3+ concentrations, the energy transfer efficiency from Bi 3+ to Tb 3+ in BaAl 2 Si 2 O 8 host increased gradually and reached as high as 86.54%, the quantum yield was about 44.26%. The energy transfer mechanism (Bi 3+ -Tb 3+ ) was proved to be dipole–dipole mechanism. The Tb 3+ emission intensity can be considerably enhanced when monitored at NUV (377 nm) by co-doping Bi 3+ ion. Moreover, the phosphor of BaAl 2 Si 2 O 8 :0.015Bi 3+ , 0.07Tb 3+ could exhibited strong green emission with good CIE chromaticity coordinate. The results indicate that BaAl 2 Si 2 O 8 :Tb 3+ , Bi 3+ is a potential green emitting phosphor for the application in w-LEDs." @default.
- W2514540103 created "2016-09-16" @default.
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- W2514540103 date "2017-01-01" @default.
- W2514540103 modified "2023-10-16" @default.
- W2514540103 title "Photoluminescence, energy transfer, and thermal stability of BaAl2Si2O8:Bi3+, Tb3+ phosphors for w-LEDs" @default.
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- W2514540103 doi "https://doi.org/10.1016/j.ceramint.2016.08.161" @default.
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