Eu2+/Tb3+掺杂的Sr2Si5N8基荧光粉的制备与发光性能

doi:10.15541/jim20140374

无机材料学报 ›› 2015, Vol. 30 ›› Issue (4): 397-400.DOI: 10.15541/jim20140374 CSTR: 32189.14.10.15541/jim20140374

Eu²⁺/Tb³⁺掺杂的Sr₂Si₅N₈基荧光粉的制备与发光性能

彭霞^{1, 2}, 李淑星^{1, 2}, 刘学建¹, 黄毅华¹, 黄政仁¹, 李会利³

(1. 中国科学院上海硅酸盐研究所, 高性能陶瓷和超微结构国家重点实验室, 上海200050; 2. 中国科学院大学, 北京100049; 3. 华东师范大学物理系, 上海200062)

收稿日期:2014-07-21 修回日期:2014-08-27 出版日期:2015-04-29 网络出版日期:2015-03-26
作者简介:彭霞(1988–), 女, 硕士研究生. E-mail: pengxia@student.sic.ac.cn
基金资助:
国家自然科学基金(51172263, 51472087);上海市自然科学基金(12ZR1451900)

Syntheses and Photoluminescence Properties of Eu²⁺/Tb³⁺ Doped
Sr₂Si₅N₈ Phosphors

PENG Xia^1,2, LI Shu-Xing^1,2, LIU Xue-Jian¹, HUANG Yi-Hua¹, HUANG Zheng-Ren₁, LI Hui-Li³

(1.The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 200050, China; 2. University of Chinese Academy of Sciences, Beijing 100049, China; 3. Department of Physics, East China Normal University, Shanghai 200062, China)

Received:2014-07-21 Revised:2014-08-27 Published:2015-04-29 Online:2015-03-26
About author:PENG Xia. E-mail: pengxia@student.sic.ac.cn
Supported by:
National Natural Science Foundation of China(551172263, 51472087);Shang hai Municipal Natural Science Foundation (12ZR1451900)

摘要/Abstract

摘要：

采用碳热还原氮化法合成了Eu²⁺/Tb³⁺掺杂的Sr₂Si₅N₈基荧光粉, 并重点研究了Tb³⁺-Eu²⁺共掺时Sr₂Si₅N₈基荧光粉的发光性能。研究结果表明: 由于Tb³⁺的f → d间的跃迁是自旋允许的, Sr₂Si₅N₈:Tb³⁺在330 nm激发光下, 在490、543、585和623 nm四处各有一发射峰, 它们分别来源于Tb³⁺的⁵D₄ → ⁷F_j (j = 6、5、4、3)能级跃迁; 掺入Tb³⁺对Sr_1.96Si₅N₈:0.04Eu²⁺的激发谱和发射谱的形状及峰位无明显影响, 当共掺离子Tb³⁺浓度为x = 0.01时, 样品发射强度比未共掺的Sr_1.96Si₅N₈:0.04Eu²⁺提高了约20%, Tb³⁺主要通过电多极能量传递的方式转向Eu²⁺。

关键词: 碱土金属氮硅化物, 碳热还原氮化法, 发光性能, 能量传递

Abstract:

Eu²⁺/Tb³⁺ doped Sr₂Si₅N₈ phosphors were prepared by carbothermal reduction and nitridation method. The luminescence of Tb³⁺/Eu²⁺ co-doped Sr₂Si₅N₈ were investigated. The experimental results indicated that owing to spin-allowed f → d transition rule the four emission lines located at 490, 543, 585, and 623 nm which ascribed to the ⁵D₄→⁷F_j (j = 6, 5, 4, 3) transitions were observed under 330 nm excitation. No obvious changes in spectral line shape were observed for Sr₂Si₅N₈:Eu²⁺ co-doped with Tb³⁺. However, the emission intensity was improved by about 20% with Tb³⁺ doping concentration of x = 0.01 mainly because of the electric multipole energy transfer from Tb³⁺ to Eu²⁺.

Key words: alkaline-earth-silicon-nitrides, carbothermal reduction and nitridation method, luminescence, energy transfer

中图分类号:

O614

彭霞, 李淑星, 刘学建,黄毅华, 黄政仁, 李会利. Eu²⁺/Tb³⁺掺杂的Sr₂Si₅N₈基荧光粉的制备与发光性能[J]. 无机材料学报, 2015, 30(4): 397-400.

PENG Xia, LI Shu-Xing, LIU Xue-Jian, HUANG Yi-Hua, HUANG Zheng-Ren, LI Hui-Li. Syntheses and Photoluminescence Properties of Eu²⁺/Tb³⁺ Doped
Sr₂Si₅N₈ Phosphors[J]. Journal of Inorganic Materials, 2015, 30(4): 397-400.

图/表 3

图1 不同Tb3+掺杂浓度的合成产物的XRD图谱

Fig. 1 XRD patterns of samples doped with different concentrations of Tb3+

图2 不同浓度Tb3+掺杂样品的激发谱(a)和发射谱(b)

Fig. 2 Excitation and emission spectra of samples doped with different concentrations of Tb3+

图3 不同Tb3+掺杂浓度下共掺粉体的激发谱(a)和发射谱(b)

Fig. 3 Excitation and emission spectra of samples doped with different concentrations of Tb3+

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Eu²⁺/Tb³⁺掺杂的Sr₂Si₅N₈基荧光粉的制备与发光性能

Syntheses and Photoluminescence Properties of Eu²⁺/Tb³⁺ Doped
Sr₂Si₅N₈ Phosphors

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