Improved photoluminescence of green-emitting phosphor Ca3Sc2Si3O12:Ce3+ for white light emitting diodes
来源期刊：JOURNAL OF RARE EARTHS2010年第2期
论文作者：刘元红 庄卫东 胡运生 高文贵
文章页码：181 - 184
摘 要：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.
刘元红1,2，庄卫东1,2，胡运生1,2，高文贵1,2
1. National Engineering Research Center for Rare Earth Materials,General Research Institute for Nonferrous Metals2. Grirem Advcanced Materials Co,Ltd
摘 要：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.
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