A novel white emitting phosphor Ca2PO4Cl:Dy3+: luminescence, concentration quenching and thermal stability
来源期刊：Journal of Rare Earths2015年第11期
论文作者：王志军 李盼来 杨志平 郭庆林 李旭 滕枫
文章页码：1137 - 1141
摘 要：A novel white emitting phosphor Ca2PO4Cl:Dy3+ was synthesized by a solid state method. The luminescence, concentration 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 yellow and blue peaks were influenced by Dy3+ concentration, and the concentration quenching effect was observed. The emission intensity 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 development of white LEDs.
王志军1，李盼来1，杨志平1，郭庆林1，李旭1，滕枫1,2
1. College of Physics Science & Technology, Hebei Key Lab of Optic-Electronic Information and Materials, Hebei University2. Institute of Optoelectronics Technology, Beijing Jiaotong University
摘 要：A novel white emitting phosphor Ca2PO4Cl:Dy3+ was synthesized by a solid state method. The luminescence, concentration 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 yellow and blue peaks were influenced by Dy3+ concentration, and the concentration quenching effect was observed. The emission intensity 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 development of white LEDs.
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