A novel white emitting phosphor Ca2PO4Cl:Dy^3+: luminescence, concentration quenching and thermal stability
A novel white emitting phosphor Ca2PO4Cl:Dy^3+ was synthesized by a solid state method. The luminescence, concentration quenching and thermal stability of Ca2PO4Cl:Dy^3+ were investigated. Ca2PO4Cl:Dy^3+ showed three emission peaks, which were located at 483, 575 and 660 nm. Though the ratio of yell...
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Published in | 中国稀土学报:英文版 Vol. 33; no. 11; pp. 1137 - 1141 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
2015
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Subjects | |
Online Access | Get full text |
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Summary: | A novel white emitting phosphor Ca2PO4Cl:Dy^3+ was synthesized by a solid state method. The luminescence, concentration quenching and thermal stability of Ca2PO4Cl:Dy^3+ were investigated. Ca2PO4Cl:Dy^3+ 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 Dy^3+ concentration, and the concentration quenching effect was observed. The emission intensity of Ca2PO4Cl:Dy^3+ as a function of temperature was explored and the emission intensity(at 150 °C) of Ca2PO4Cl:Dy^3+ was 90.0% of the value at 25 °C, and activation energy was 0.18 eV. The results indicated that Ca2PO4Cl:Dy^3+ might be conducive to development of white LEDs. |
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Bibliography: | 11-2788/TF luminescence phosphors Ca2PO4Cl:Dy^3+ white light emitting diodes rare earths A novel white emitting phosphor Ca2PO4Cl:Dy^3+ was synthesized by a solid state method. The luminescence, concentration quenching and thermal stability of Ca2PO4Cl:Dy^3+ were investigated. Ca2PO4Cl:Dy^3+ 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 Dy^3+ concentration, and the concentration quenching effect was observed. The emission intensity of Ca2PO4Cl:Dy^3+ as a function of temperature was explored and the emission intensity(at 150 °C) of Ca2PO4Cl:Dy^3+ was 90.0% of the value at 25 °C, and activation energy was 0.18 eV. The results indicated that Ca2PO4Cl:Dy^3+ might be conducive to development of white LEDs. |
ISSN: | 1002-0721 2509-4963 |