Luminescent and aging characteristics of blue emitting (Ca1−x,Mgx)Al2Si2O8:Eu phosphor for PDPs application |
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| Authors: | Won Bin Im Jong Hyuk Kang |
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| Institution: | a Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 373-1, Guseoung-dong, Yuseong-gu, Daejeon 305-701, South Korea
b Korea Research Institute of Standards and Science, P.O. Box 102, Yuseong, Daejeon 305-600, South Korea |
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| Abstract: | We have evaluated thermal stability and aging property of a blue color-emitting phosphor, CaAl2Si2O8:Eu2+ (CAS:Eu2+), synthesized by conventional solid-state reaction method. When both CAS:Eu2+ and BaMgAl10O19:Eu2+ (BAM) were baked in air at 500 °C for 20 min, the decrease of photoluminescence (PL) intensity of CAS:Eu2+ was lower than that of BAM. The aging property of CAS:Eu2+ was also better than that of BAM. Due to its rigid structure and unlimited framework of silicon-oxygen and aluminum-oxygen around Eu2+ ions, Eu2+ ions were protected from outer oxidizing atmosphere and plasma discharge. After analysis of aging property and thermal stability, the differences of these thermal stability and aging property of CAS:Eu2+ from those of BAM were ascribed to its crystal structure which plays a role of a shield for Eu2+ ions against oxidation atmosphere and Xe ion bombardment. |
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| Keywords: | 78 55 |
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