A novel green-emitting phosphor NaCaPO4:Eu2+ for white LEDs
A novel green-emitting phosphor NaCaPO4:Eu2+ for white LEDs
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DOI：
10.1016/j.matlet.2007.10.030
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发表时间：
2008-04-30
影响因子：
3
通讯作者：
Fu, Guangsheng
中科院分区：
文献类型：
--
作者：
Yang, Zhiping;Yang, Guangwei;Fu, Guangsheng
通过高温固相反应制备了一种新型绿光荧光粉NaCaPO4:Eu2+，并在近紫外光下观察到高效的绿光发射。发射光谱显示以 505 nm 为中心的单个强带，对应于 Eu2+ 的 4f(6)sd(1)-> 4f(7) 跃迁。激发光谱是从 250 nm 延伸到 450 nm 的宽带，与紫外发光二极管 (UV LED) 的发射相匹配。还研究了Eu2+ 掺杂浓度对NaCaPO4:EU2+ 发射强度的影响。 NaCaPO4:Eu2+ 是一种用于白光 LED 的潜在绿光荧光粉。 (c) 2007 Elsevier B.V. 保留所有权利。
A novel green-emitting phosphor NaCaPO4:Eu2+ was prepared by high temperature solid state reaction and an efficient green emission under near-ultraviolet was observed. The emission spectrum shows a single intense band centered at 505 nm, which corresponds to the 4f(6)sd(1)-> 4f(7) transition of Eu2+. The excitation spectrum is a broad band extending from 250 to 450 nm, which matches the emission of ultraviolet light-emitting diodes (UV LEDs). The effect of doped Eu2+ concentration on the emission intensity of NaCaPO4:EU2+ was also investigated. The NaCaPO4:Eu2+ is a potential green-emitting phosphor for white LEDs. (c) 2007 Elsevier B.V. All rights reserved.