Effects of charge compensation on red emission in CaYAl3OT7:Eu3+ phosphor |
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作者姓名: | 黄飞飞 刘雪强 李韦韦 胡丽丽 陈丹平 |
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作者单位: | [1]College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China; [2]Key Laboratory of Advanced Materials of Yunnan Province, Kunming 650093, China |
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基金项目: | supported by the National Natural Science Foundation of China under Gramt No.51172252 |
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摘 要: | Monovalent ions Li+, Na+, and K+, as charge compensators, are introduced into CaYA1307: M (M = Eu3+, Ce~+) in this letter. Their crystal phases and photoluminescence properties of different alkali metal ions doped in CaYA1307 are investigated. In addition, the influence of charge compensation ion Li+ which has a more obvious role in improving luminescence intensity on CaYA1307: Eu3+ phosphor is intentionally discussed in detail and a possible mechanism of charge compensation is given. The enhancement of red emission centered at 618 nm belonging to Eu3+ is achieved by adding alkali metal ion Li+ under 393-nm excitation.
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关 键 词: | 电荷补偿 荧光粉 发射费用 碱金属离子 铕 红光 发光特性 发光强度 |
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