Preparation, characterization and luminescence of a new green-emitting phosphor:: Gd2TeO6 doped with Tb3+
Preparation, characterization and luminescence of a new green-emitting phosphor:: Gd2TeO6 doped with Tb3+
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DOI：
10.1016/j.matlet.2008.04.004
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发表时间：
2008-07-31
影响因子：
3
通讯作者：
Alvarez, Waldo
中科院分区：
文献类型：
--
作者：
Llanos, Jaime;Castillo, Rodrigo;Alvarez, Waldo
通过氧化相应的稀土氧化碲化物制备了新型绿色发光材料GD2-xTbxTeO6。报道了其光致发光(PL)特性。激发光谱以302 nm、318 nm、339 nm、353 nm和378 nm为中心的5个主要谱带为特征。在378 nm紫外光的激发下，发射光谱在543-548 nm处有一个很强的峰，对应于Tb3+的D-5(4)->；F-7(5)跃迁。这种荧光粉可以被波长350-400 nm的光激发，因此可以用作使用近紫外光LED作为光源的白色照明设备的绿色荧光粉。(C)2008爱思唯尔B.V.保留所有权利。
Novel green-emitting Gd2-xTbxTeO6 powder phosphor has been prepared by the oxidation of corresponding rare-earth oxytellurides. The photoluminescence (PL) properties were reported. Five dominant bands centered at 302 nm, 318 nm, 339 nm, 353 nm and 378 nm characterize the excitation spectrum. Under the excitation of 378 nm UV light, the emission spectrum exhibits an intense peak centered at 543-548 nm corresponding to the D-5(4) --> F-7(5) transition of Tb3+. This phosphor can be excited by light with wavelengths of 350-400 nm and therefore can be used as a green phosphor for white lighting devices utilizing near-UV LED as a light source. (C) 2008 Elsevier B.V. All rights reserved.