Li+、Na+共掺(YxGdyLu1-x-y)2O3:0.5%Pr3+荧光粉的制备及发光特性研究 -

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Li⁺、Na⁺共掺(Y_xGd_yLu_1-x-y)₂O₃:0.5%Pr³⁺荧光粉的制备及发光特性研究

doi:10.3788/CO.20191206.1279

庹娟^{1, 2, 3,},
叶颖^{1, 2, 3},
赵海琴^{1, 2, 3},
王林香^{1, 2, 3,,}

1.
新疆师范大学物理与电子工程学院, 新疆乌鲁木齐 830054
2.
新疆师范大学新疆矿物发光材料及其微结构实验室, 新疆乌鲁木齐 830054
3.
新疆师范大学物理学重点学科, 新疆乌鲁木齐 830054

基金项目:

新疆维吾尔自治区自然科学基金2017D01A60

详细信息

作者简介:
庹娟(1990—), 女, 四川广安人, 硕士, 2018年于新疆师范大学获得硕士学位, 主要从事稀土发光材料方面的研究。E-mail:1498970687@qq.com
王林香(1979—), 女, 甘肃秦安人, 博士, 副教授, 2010年于中国科学技术大学获得博士学位, 主要从事稀土发光材料方面的研究。E-mail:wanglinxiang23@126.com

中图分类号:O482.31
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出版历程
- 收稿日期:2018-11-29
- 修回日期:2019-01-30
- 刊出日期:2019-12-01

Preparation and luminescence properties of Li⁺, Na⁺co-doped (Y_xGd_yLu_1-x-y)₂O₃: 0.5%Pr³⁺phosphors

TUO Juan^{1, 2, 3,},
YE Ying^{1, 2, 3},
ZHAO Hai-qin^{1, 2, 3},
WANG Lin-xiang^{1, 2, 3,,}

1.
Department of Physics, Xinjiang Normal University, Urumqi 830054, China
2.
Key Laboratory of Novel Luminescent Materials and Nanostructures, Xinjiang Normal University, Urumqi 830054, China
3.
Key Discipline of Physics, Xinjiang Normal University, Urumqi 830054, China

Funds:

Natural Science Foundation of Xinjiang2017D01A60

More Information

Corresponding author:WANG Lin-xiang, E-mail:wanglinxiang23@126.com

摘要

摘要:用高温固相法制备了Li ⁺，Na ⁺共掺（Y _xGd _yLu _1-x-y） ₂O ₃：0.5%Pr ³⁺荧光粉末。用XRD对样品进行结构表征，用扫描电镜观测了样品的形貌，测量了样品的激发光谱、发射光谱及发光衰减曲线。结果显示，Li ⁺、Na ⁺和Pr ³⁺的掺杂没有引起（Y _xGd _yLu _1-x-y） ₂O ₃立方晶相结构的改变。在单一基质中掺杂的Li ⁺、Na ⁺可有效改善晶粒尺寸，在复合基质中掺杂的Li ⁺、Na ⁺，不仅可以有效改善晶粒尺寸，还使得样品有陶瓷化的趋势。在272 nm激发下，粉末样品在632 nm处均呈现较强的Pr ³⁺红色发射。不同条件下，1 000℃煅烧2 h获得的（Y _0.05Gd _0.05Lu _0.9） ₂O ₃：0.5%Pr ³⁺，2.5%Li ⁺，1%Na ⁺荧光粉末的发光最强，且荧光寿命较短。
- 荧光粉末/
- Li⁺, Na⁺共掺(Y_xGd_yLu_1-x-y)₂O₃:0.5%Pr³⁺/
- 发光强度/
- 荧光寿命
Abstract:Li ⁺, Na ⁺co-doped (Y _xGd _yLu _1-x-y) ₂O ₃:0.5%Pr ³⁺phosphors were synthesized with a high temperature solid-state reaction. The structures of the samples were characterized by XRD. The excitation spectra, emission spectra and fluorescence lifetime of the samples were measured and analyzed using a fluorescence spectrophotometer. The results show that they are still the cubic phase of the matrix for Li ⁺, Na ⁺, doped (Y _xGd _yLu _1-x-y) ₂O ₃:Pr ³⁺samples. The doping of Li ⁺and Na ⁺in a single matrix can effectively improve the grain size while the doping of Li ⁺and Na ⁺in a composite matrix not only effectively improves the grain size, but also causes the sample to become ceramic. Under excitation at 272 nm, the powder samples present strong red emissions of Pr ³⁺at 632 nm. Under different conditions, (Y _0.05Gd _0.05Lu _0.9) ₂O ₃:0.5%Pr ³⁺, 2.5%Li ⁺, 1%Na ⁺fluorescent powder obtained by calcination at 1 000℃ for two hours has the strongest luminescence, while the lifetime of the sample is shorter.
- fluorescent powder/
- Li⁺and Na⁺co doped (Y_xGd_yLu_1-x-y)₂O₃:0.5%Pr³/
- luminous intensity/
- fluorescence lifetime

HTML全文

图 1Li⁺、Na⁺共掺(Y_xGd_yLu_1-x-y)₂O₃:0.5%Pr³⁺的X射线衍射图(a)与晶胞参数(b)

Figure 1.X ray diffraction patterns of Li⁺, Na⁺co-doped (Y_xGd_yLu_1-x-y)₂O₃:0.5%Pr³⁺(a) and unit cell parameters(b)

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图 27号(a)、8号(b)、6号(c)、10号(d)和14号(e)样品的扫描电子显微镜照片

Figure 2.SEM images of samples No.7(a), No.8(b), No.6(c), No.10(d) and No.14(e)

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图 3Li⁺、Na⁺共掺(Y_xGd_yLu_1-x-y)₂O₃:0.5%Pr³⁺激发光谱

Figure 3.Excitation spectra of Li⁺, Na⁺co-doped (Y_xGd_yLu_1-x-y)₂O₃:0.5%Pr³⁺

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图 4Li⁺、Na⁺共掺(Y_xGd_yLu_1-x-y)₂O₃:0.5%Pr³⁺发射光谱

Figure 4.Emitting spectra of Li⁺, Na⁺co-doped (Y_xGd_yLu_1-x-y)₂O₃:0.5%Pr³⁺

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图 5温度对Li⁺、Na⁺共掺(Y_0.05Gd_0.05Lu_0.9)₂O₃:0.5%Pr³⁺荧光粉末发光强度的影响

Figure 5.Effect of temperature on the luminescence intensity of Li⁺, Na⁺co-doped(Y_0.05Gd_0.05Lu_0.9)₂O₃:0.5% Pr³⁺phosphors

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图 6部分Li⁺、Na⁺共掺(Y_0.05Gd_0.05Lu_0.9)₂O₃:0.5%Pr³⁺荧光粉末中Pr³⁺的¹D₂能级衰减曲线

Figure 6.Decay curves of¹D₂energy level of Pr³⁺in partial Li⁺, Na⁺co-doped (Y_0.05Gd_0.05Lu_0.9)₂O₃: 0.5% Pr³⁺fluorescent powder

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表 1Li⁺、Na⁺共掺(Y_xGd_yLu_1-x-y)₂O₃:0.5%Pr³⁺(摩尔浓度)样品

Table 1.Li⁺, Na⁺co-doped (Y_xGd_yLu_1-x-y)₂O₃:0.5%Pr³⁺samples(molar concentration)

Sample	(Y_xGd_yLu_1-x-y)₂O₃	Pr³⁺/%	Li⁺/%	Na⁺/%	Temperature/℃
1	(Y_0.3Lu_0.7)₂O₃	0.5	0	0	800
2	(Y_0.3Gd_0.05Lu_0.65)₂O₃	0.5	0	0	800
3	(Y_0.3Gd_0.1Lu_0.6)₂O₃	0.5	0	0	800
4	(Y_0.3Gd_0.2Lu_0.5)₂O₃	0.5	0	0	800
5	(Y_0.3Gd_0.3Lu_0.4)₂O₃	0.5	0	0	800
6	(Y_0.05Gd_0.05Lu_0.9)₂O₃	0.5	0	0	800
7	Lu₂O₃	0.5	0	0	800
8	Lu₂O₃	0.5	2.5	1	800
9	(Y_0.3Gd_0.3Lu₀_.4)₂O₃	0.5	2.5	1	800
10	(Y_0.05Gd_0.05Lu_0.9)₂O₃	0.5	2.5	1	800
11	(Y_0.05Gd_0.05Lu_0.9)₂O₃	0.5	2.5	1	600
12	(Y_0.05Gd_0.05Lu_0.9)₂O₃	0.5	2.5	1	700
13	(Y_0.05Gd_0.05Lu_0.9)₂O₃	0.5	2.5	1	900
14	(Y_0.05Gd_0.05Lu_0.9)₂O₃	0.5	2.5	1	1 000
15	(Y_0.05Gd_0.05Lu_0.9)₂O₃	0.5	2.5	1	1 150

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