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Ca3Sc2Si3O12:Ce3+ phosphors with single-phase were successfully synthesized by a gel-combustion method.Annealing atmosphere greatly affected the luminescent properties of the phosphor.The intensity of absorption band at 450 nm was greatly increased with a reducing atmosphere,which was very suitable as a color converter in white LED.The absorption at 243 and 311 nm was gradually enhanced with a stronger reducing atmosphere and a new absorption peak at 362 nm appeared in N2+H2 mixing gas.The emission intensity also increased when using reducing atmosphere.Meanwhile,the emission peaks slightly moved to the longer wavelength in reducing atmosphere.A white LED with higher color rending index and lower color temperature was obtained by putting our improved product Ca3Sc2Si3O12:Ce3+ green phosphor and Sr2Si5N8:Eu red phosphor onto a blue LED.
Ca3Sc2Si3O12: Ce3 + phosphors with single-phase were successfully synthesized by a gel-combustion method. Annealing atmosphere greatly affected by the luminescent properties of the phosphor. The intensity of absorption band at 450 nm was greatly increased with a reducing atmosphere, which was very suitable as a color converter in white LED. The absorption at 243 and 311 nm was gradually enhanced with a stronger reducing atmosphere and a new absorption peak at 362 nm than in N2 + H2 mixing gas. The emission intensity also increased when using reducing atmosphere. the emission peaks slightly moved to the longer wavelength in reducing atmosphere. A white LED with higher color rending index and lower color temperature was obtained by feeding our improved product Ca3Sc2Si3O12: Ce3 + green phosphor and Sr2Si5N8: Eu red phosphor onto a blue LED.