| Solid solubility and photoluminescence of Y3Al5O12:Ce3+prepared by using(Y1-xCex)2O3 as precursor |
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| 作者姓名： | 刘思佳 彭同江 宋振 边柳 宋功保 刘泉林 |
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| 基金项目： | Project supported by the National Natural Science Foundation of China(Grant No.51272027);the Ph.D.Program Foundation of Education Ministry of China(Grant No.20100006110011) |
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| 摘 要： | Trivalent cerium-doped yttrium aluminum garnet(YAG:Ce3+) phosphors are synthesized by solid-state reaction method through using(Y1-xCex)2O3 solid solutions as precursors. Solid solubility limits of Ce3+replacing Y3+in Y2O3and YAG are determined to be 40% and 7.5%, respectively, based on the relationship between the lattice parameter and chemical composition. Using(Y1-xCex)2O3 as precursors we synthesize YAG:Ce3+single phase at 1450°C and N2atmosphere. However, under the same conditions using CeO2there exists a second phase YAlO3as impurity. The photoluminescence intensity of YAG:Ce3+increases monotonically with the increase of Ce concentration until it reaches a maximum at solid solubility limits of Ce3+in YAG.
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Solid solubility and photoluminescence of Y_3Al_5O_(12):Ce~(3+)prepared by using(Y_(1-x)Ce_x)_2O_3 as precursor |
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| Abstract: | |
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| Keywords: | luminescence YAG solid solubility LED |
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