Synthesis and photoluminescence properties of Eu3+-doped γ-Ca3(PO4)2

被引:18
|
作者
Xue, Weihong [1 ]
Zhai, Shuangmeng [1 ]
Zheng, Haifei [1 ]
机构
[1] Peking Univ, MOE, Sch Earth & Space Sci, Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China
基金
中国国家自然科学基金;
关键词
Inorganic compounds; Chemical synthesis; Luminescence; CALCIUM PHOSPHATES; DENSE POLYMORPH; EU3+ IONS; LUMINESCENCE; THERMOLUMINESCENCE; HYDROXYAPATITE; BIOMATERIALS; CA3(PO4)2; SR;
D O I
10.1016/j.matchemphys.2012.01.031
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Eu3+-doped (1% and 3%) gamma-Ca-3(PO4)(2) was synthesized by high-pressure and high-temperature experimental method and the samples were characterized by X-ray diffraction. The luminescence properties of samples were investigated by emission and excitation spectra. The excitation spectra of Eu3+-doped gamma-Ca-3(PO4)(2) showed that samples were mainly attributed to Eu3+-O2- charge-transfer band at 270 nm, and some sharp lines were also attributed to Eu3+ f-f transitions in near-UV regions with the strongest peaks at 395 nm. Under the 395 nm excitation, the intense red emission peak at 611 nm was observed. The strongest line (395 nm) in excitation spectra of those phosphors matched well with the output wavelength of UV InGaN-based light-emitting diodes (LEDs) chip. The luminescent properties suggested that Eu3+-doped gamma-Ca-3(PO4)(2) might be regarded as a potential red phosphor candidate for near-UV LEDs. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:324 / 327
页数:4
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