Abstract
In the Ba9 Lu2 Si6 O24 (BLS) host, Ce3+ shows cyan emissions peaking at 490nm under 400nm excitations. BLS:Tb3+ only can be effectively excited by 254nm light and gives rise to green emissions at 553nm. However, both the cyan and green emissions can be obtained in BLS:Ce3+ ,Tb3+ under 400nm excitations due to effective energy transfers from Ce3+ to Tb3+ . BLS:Mn2+ shows red emissions peaking at 610nm under 414nm excitations. By co-doping Ce3+ , Tb3+ and Mn2+ , tunable full-color emissions were obtained. The BLS:0.3Ce3+ ,0.6Tb3+ ,0.15Mn2+ single phosphor exhibits a white light with a high color rendering index of 85 and a correlated color temperature of 5480K under 400nm excitation.
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