During the pastdecade,silicate phosphors have received much attention due to their outstanding thermal stability,excellent
luminescence properties and structural diversity [1–3].
Silicate phosphors can down-convert high energy radiation orultraviolet to visible light,and have been used for fluoroscopic screens,plasma displays, fluorescent lamps,white light-emitting diodes(LEDs).
Moreover,with the rapid development of white LEDs,many silicate phosphors that can be excited by nearultraviolet or
blue light have been prepared,suchasSr3SiO5:Eu2þ/Ce3þ, SrSi2 N2O2:Eu2þ/Ce3þ, Sr2
Si5N8:Eu2þ/Ce3þ [4–6].
However,these phosphors were usually prepared at high temperature (usually 41300 1C) or high pressure systems.
Recently,some silicate
phosphors including alkali metals have been synthesized at low sintering temperature,such as Li2SrSiO4:Eu2þ at 950 1C [7].
During the pastdecade,silicate phosphors have received much attention due to their outstanding thermal stability,excellent
luminescence properties and structural diversity [1–3].
Silicate phosphors can down-convert high energy radiation orultraviolet to visible light,and have been used for fluoroscopic screens,plasma displays, fluorescent lamps,white light-emitting diodes(LEDs).
Moreover,with the rapid development of white LEDs,many silicate phosphors that can be excited by nearultraviolet or
blue light have been prepared,suchasSr3SiO5:Eu2þ/Ce3þ, SrSi2 N2O2:Eu2þ/Ce3þ, Sr2
Si5N8:Eu2þ/Ce3þ [4–6].
However,these phosphors were usually prepared at high temperature (usually 41300 1C) or high pressure systems.
Recently,some silicate
phosphors including alkali metals have been synthesized at low sintering temperature,such as Li2SrSiO4:Eu2þ at 950 1C [7].
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