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1. 中国科学技术大学, 物理系, 安徽, 合肥, 230026
2. 中国科学技术大学, 物理系, 安徽, 合肥, 230026
收稿:2004-08-25,
修回:2004-11-24,
纸质出版:2006-01-20
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郭海, 董宁, 周民杰, 尹民, 张慰萍, 楼立人, 夏上达. Er<sup>3+</sup>,Yb<sup>3+</sup>共掺杂SrTiO<sub>3</sub>超细粉末的可见上转换发光[J]. 发光学报, 2006,27(1): 53-58
GUO Hai, DONG Ning, ZHOU Min-jie, YIN Min, ZHANG Wei-ping, LOU Li-ren, XIA Shang-da. Visible Upconversion Luminescence in Er<sup>3+</sup>/Yb<sup>3+</sup>-codoped SrTiO<sub>3</sub> Ultra-fine Powders[J]. Chinese Journal of Luminescence, 2006,27(1): 53-58
郭海, 董宁, 周民杰, 尹民, 张慰萍, 楼立人, 夏上达. Er<sup>3+</sup>,Yb<sup>3+</sup>共掺杂SrTiO<sub>3</sub>超细粉末的可见上转换发光[J]. 发光学报, 2006,27(1): 53-58 DOI:
GUO Hai, DONG Ning, ZHOU Min-jie, YIN Min, ZHANG Wei-ping, LOU Li-ren, XIA Shang-da. Visible Upconversion Luminescence in Er<sup>3+</sup>/Yb<sup>3+</sup>-codoped SrTiO<sub>3</sub> Ultra-fine Powders[J]. Chinese Journal of Luminescence, 2006,27(1): 53-58 DOI:
钛酸锶(SrTiO
3
)具有高介电常数、良好的绝缘性质、优良的物理化学稳定性和在可见光范围内的优异的透明度等优点
是一种重要的无机功能材料。近年来
Al
3+
Ga
3+
等离子共掺杂的SrTiO
3
:Pr
3+
做为一种优异的红色场发射显示(FED)荧光粉引起了人们的兴趣。另外
SrTiO
3
具有相对较小的声子频率
因而它可以作为一种有利于上转换发光的基质材料。以NaCl为助熔剂制备了Er
3+
Yb
3+
共掺杂的SrTiO
3
超细粉末。在980nm激发下
样品发出很强的来自于Er
3+
离子的
2
H
11/2
→
4
I
15/2
4
S
3/2
→
4
I
15/2
(绿光)和
4
F
9/2
→
4
I
15/2
(红光)跃迁的上转换发光。Yb
3+
离子的共掺杂对Er
3+
离子的上转换发光起明显的增强作用。研究了上转换发光强度与稀土离子浓度以及激发光强度之间的依赖关系
表明在Er
3+
单掺杂和Er
3+
Yb
3+
共掺杂的样品中
绿光和红光都是被双光子激发过程激发的。还对上转换发光的机理做了初步分析。
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Capobianco J A,Vetrone F,Boyer J C,et al.Enhancement of red emission (4F9/2→4I15/2) via upconversion in bulk and nanocrystalline cubic Y2O3:Er3+[J].J.Phys.Chem.B,2002,106:1181-1187.
Patra A,Friend C S,Kapoor R,et al.Upconversion in Er3+:ZrO2 nanocrystals[J].J.Phys.Chem.B,2002,106:1909-1912.
Patra A,Friend C S,Kapoor R,et al.Fluorescence upconversion properties of Er3+-doped TiO2 and BaTiO3 nanocrystallites[J].Chem.Mater.,2003,15:3650-3655.
Zhang H X,Kam C H,Zhou Y,et al.Green upconversion luminescence in Er3+:BaTiO3 films[J].Appl.Phys.Lett.,2000,77(5):609-611.
Lin H,Meredith G,Jiang S,et al.Optical transitions and visible upconversion in Er3+ doped niobic tellurite glass[J].J.Appl.Phys.,2003,93(1):186-191.
Oliveira A S,Araujo de M T,Gouveia-Neto A S.Frequency upconversion in Er3+/Yb3+-codoped chalcogenide glass[J].Appl.Phys.Lett.,1998,72(7):753-755.
Chen Lihong,Cao Wanghe,Xia Tian.Up-conversion luminescence of fluoro-oxide glass co-doped with Er3+ and Yb3+ under 980 nm excitation[J].Chin.J.Lumin.(发光学报),2004,25(4):355-358 (in Chinese).
Yang Kuisheng,Liang Hailian,Zhang Xiyan.Up-conversion luminescence of glass ceramics co-doped with Yb3+,Er3+[J].Chin.J.Lumin.(发光学报),2004,25(4):365-368 (in Chinese).
Guo H,Li Y,Wang D,et al.Blue upconversion of cubic Gd2O3:Er produced by green laser[J].J.Alloys Compd.,2004,376:23-27.
Bao D,Yao X,Wakiya N,et al.Band-gap energies of sol-gel-derived SrTiO3 thin films[J].Appl.Phys.Lett.,2001,79(23):3767-3769.
Okamoto S,Yamamoto H.Characteristic enhancement of emission from SrTiO3:Pr3+ by addition of group-Ⅲb ions[J].Appl.Phys.Lett.,2001,78(5):655-657.
Battisha I K,Speghini A,Polizzi S,et al.Molten chloride synthesis,structural characterisation and luminescence spectroscopy of ultrafine Eu3+-doped BaTiO3 and SrTiO3[J].Mater.Lett.,2002,57:183-187.
Last J T.Infrared-absorption studies on barium titanate and related materials[J].Phys.Rev.,1957,105(6):1740-1750.
Man S Q,Pun E Y B,Chung P S.Upconversion luminescence of Er3+ in alkali bismuth gallate glasses[J].Appl.Phys.Lett.,2000,77(4):483-485.
Chen X,Nguyen T,Luu Q,et al.Concentration dependence of visible up-conversion luminescence in the laser crystal Gd3Ga5O12 doped with erbium[J].J.Lumin.,2000,85:295-299.
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