Synthesis, structure and spectroscopic properties of Nd3+:SrY2O4 phosphor

	Synthesis, structure and spectroscopic properties of Nd3+:SrY2O4 phosphor
	Peng F(彭方)1; Zhang QL(张庆礼)1; Wang XF(王小飞)1; Zhang HL(张会丽)1; Ding SJ(丁守军)1; Liu WP(刘文鹏)1; Luo JQ(罗建乔)1; Sun DL(孙敦陆)1; Sun GH(孙贵花)1
刊名	ACTA PHYSICA SINICA
	2016
卷号	65
关键词	LASER SRY2O4 Nd3+ SrY2O4 X-ray powder diffraction photoluminescence
ISSN号	1000-3290
其他题名	Synthesis, structure and spectroscopic properties of Nd~(3+):SrY_2O_4 phosphor
英文摘要	In order to obtain new-type laser crystals, SrY2O4 is chosen as a host material. Because Y3+ ions in SrY2O4 occupy two non-equivalent sites, it might be possible to realize dual-wave laser and broadband emission at 1.06 mu m by partially replacing Y3+ with Nd3+. In this work, (3 at.%) Nd3+ doped SrY2O4 phosphor is synthesized by the conventional solid state reaction. The structure and luminescence properties in the visible and near-infrared ranges are studied. The peaks in the X-ray powder diffraction pattern of (3 at.%) Nd3+:SrY2O4 can be well indexed according to ICSD#25701. The lattice parameters, atomic coordinates, atomic temperature factors etc., are obtained by the Rietveld refinement with R-p of 4.68% and R-wp of 5.91%. According to the excitation spectra in a range of 220-380 nm, it can be seen that Nd3+:SrY2O4 is efficiently excited by 353 nm which is assigned to the I-4(9/2) -> D-4(3/2) + D-4(5/2) + I-2(11/2) + D-4(1/2) transition of Nd3+ ions. Under the 353 nm light excitation, Nd3+:SrY2O4 exhibits the strongest emission at 419 nm corresponding to the D-2(15/2) -> I-4(9/2) transition of Nd3+ ions. What is more, Nd3+:SrY2O4 can be excited effectively by 824 nm light, which matches well with the commercial 830 nm diode laser. When excited with 824 nm, the strongest fluorescence peak is located at 1083 nm with a wide bandwidth of about 90 nm. Compared with that at 8 K, the bandwidth in the fluorescence spectrum at 300 K is broadened because of the homogeneous broadening induced by the increase of temperature. Additionally, the peaks corresponding to the F-4(3/2) -> I-4(11/2) transition are split into two groups at 8 K, which results from the two non-equivalent sites of Nd3+ ions. Compared with Nd3+:YAG, Nd3+:SrY2O4 has more potential applications in the tunable and ultrashort lasers. The fluorescence lifetime of the F-4(3/2) -> I-4(11/2) transition of (3 at.%) Nd3+:SrY2O4 is 281.7 mu s, which shows slight concentration quenching compared with that of (0.5 at.%) Nd3+:SrY2O4. The fluorescence lifetime of (3 at.%) Nd3+:SrY2O4 is much longer than that of (0.6 at.%) Nd3+:YAG which is beneficial to the energy storage. In conclusion, the wide emission band and the long decay time of 1.08 mu m indicate that Nd3+:SrY2O4 is a very promising new-wavelength and ultrashort laser material pumped by laser diode.
资助项目	[National Natural Science Foundation of China]
语种	英语
CSCD记录号	CSCD:5650792
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/52065]
专题	中国科学院合肥物质科学研究院
作者单位	1.中国科学院安徽光学精密机械研究所 2.中国科学院安徽光学精密机械研究所 3.中国科学院安徽光学精密机械研究所 4.中国科学院安徽光学精密机械研究所 5.中国科学院安徽光学精密机械研究所 6.中国科学院安徽光学精密机械研究所 7.中国科学院安徽光学精密机械研究所 8.中国科学院安徽光学精密机械研究所 9.中国科学院安徽光学精密机械研究所
推荐引用方式 GB/T 7714	Peng F,Zhang QL,Wang XF,et al. Synthesis, structure and spectroscopic properties of Nd3+:SrY2O4 phosphor[J]. ACTA PHYSICA SINICA,2016,65.
APA	彭方.,张庆礼.,王小飞.,张会丽.,丁守军.,...&孙贵花.(2016).Synthesis, structure and spectroscopic properties of Nd3+:SrY2O4 phosphor.ACTA PHYSICA SINICA,65.
MLA	彭方,et al."Synthesis, structure and spectroscopic properties of Nd3+:SrY2O4 phosphor".ACTA PHYSICA SINICA 65(2016).