稀土学报（英文版）
稀土學報（英文版）
희토학보（영문판）
Journal of Rare Earths
2015年
11期
1137-1141
,共5页
王志军%李盼来%杨志平%郭庆林%李旭%滕枫
王誌軍%李盼來%楊誌平%郭慶林%李旭%滕楓
왕지군%리반래%양지평%곽경림%리욱%등풍
luminescence%phosphors%Ca2PO4Cl:Dy3+%white light emitting diodes%rare earths
A novel white emitting phosphor Ca2PO4Cl:Dy3+was synthesized by a solid state method. The luminescence, concentra-tion quenching and thermal stability of Ca2PO4Cl:Dy3+were investigated. Ca2PO4Cl:Dy3+showed three emission peaks, which were located at 483, 575 and 660 nm. Though the ratio of yellow to blue emission intensities showed a similar value, the intensities of yel-low and blue peaks were influenced by Dy3+concentration, and the concentration quenching effect was observed. The emission inten-sity of Ca2PO4Cl:Dy3+as a function of temperature was explored and the emission intensity (at 150 °C) of Ca2PO4Cl:Dy3+was 90.0%of the value at 25 °C, and activation energy was 0.18 eV. The results indicated that Ca2PO4Cl:Dy3+might be conducive to develop-ment of white LEDs.
