Photoluminescence and structural characteristics of a new orange phosphor: Ca2.6Sr2.4(PO4)3Cl:Eu3+
Photoluminescence and structural characteristics of a new orange phosphor: Ca2.6Sr2.4(PO4)3Cl:Eu3+
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DOI：
10.1007/s00340-009-3648-z
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
F. Ren;D. H. Chen
中科院分区：
文献类型：
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作者：
F. Ren;D. H. Chen
采用改进的固相反应法制备了一种新型的橙色荧光粉Ca 2. 6Sr 2. 4（PO 4）3Cl：Eu 3+，X射线粉末衍射（XRD）分析证实了Ca 2. 6Sr 2. 4（PO 4）3Cl：Eu 3+的形成。光致发光（PL）结果表明，该荧光粉能被380 ~ 500 nm的紫外-可见光有效激发，发出明亮的橙子光。研究了Eu ~（3+）掺杂浓度对Ca_2.6Sr_2.4（PO_4）_3Cl：Eu ~（3+）发光性能的影响。结果表明，由于浓度猝灭，发光强度随Eu 3+浓度的增加而降低。TEM照片显示，Ca 2. 6Sr 2. 4（PO 4）3Cl：Eu 3+的晶粒尺寸约为45 nm，与XRD图的理论计算数据完全一致。
A novel orange-emitting phosphor, Ca2.6Sr2.4(PO4)3Cl:Eu3+, was prepared by a modified solid-state reaction and X-ray powder diffraction (XRD) analysis confirmed the formation of Ca2.6Sr2.4(PO4)3Cl:Eu3+. Photoluminescence (PL) results showed that the phosphor can be efficiently excited by UV-visible light from 380 to 500 nm, and exhibited bright orange emission. The effects of the doped-Eu3+concentration in Ca2.6Sr2.4(PO4)3Cl:Eu3+on the PL were investigated in detail. The results showed that the relative PL intensity decreases with Eu3+concentration increasing due to concentration quenching. TEM images show that the grain size of Ca2.6Sr2.4(PO4)3Cl:Eu3+is about 45 nm, which is in full agreement with the theoretical calculation data from the XRD patterns.