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人工晶体学报 ›› 2021, Vol. 50 ›› Issue (8): 1438-1443.

• 研究论文 • 上一篇    下一篇

ZrSiO4∶Mn4+荧光粉的制备及光谱性能

张少伯, 杨秋红, 胡娟   

  1. 上海大学材料科学与工程学院,上海 200444
  • 收稿日期:2021-05-14 出版日期:2021-08-15 发布日期:2021-09-14
  • 通讯作者: 杨秋红,教授。E-mail:yangqiuhong@shu.edu.cn
  • 作者简介:张少伯(1993—),男,河北省人,硕士研究生。E-mail:zhangshaobo_1223@163.com

Synthesis and Spectroscopic Properties of ZrSiO4∶Mn4+ Phosphor

ZHANG Shaobo, YANG Qiuhong, HU Juan   

  1. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
  • Received:2021-05-14 Online:2021-08-15 Published:2021-09-14

摘要: 采用固相反应制备了不同浓度Mn4+掺杂的硅酸锆粉末,研究了Mn4+对硅酸锆光致发光性能的影响。采用XRD表征 ZrSiO4∶Mn4+的结构,结果显示在1 400 ℃粉末已被完全合成。研究了不同掺杂浓度下ZrSiO4∶Mn4+粉末的光谱性能,在0.3%Mn4+掺杂浓度(摩尔分数)下,其发光性能最好。在激发谱中,位于363 nm的峰是由O2--Mn4+的电荷迁移带和自旋允许的Mn4+4A2-4T1的能级跃迁叠加产生的,而450 nm的激发峰则是因为Mn4+4A2-4T2能级跃迁导致的。发射谱中的最强峰位于667 nm,这是由Mn4+2E-4A2的能级跃迁产生的,还有一个位于698 nm的峰则是由于反斯托克斯声子边带发射造成的。测试了ZrSiO4∶Mn4+粉末的荧光衰减曲线,Mn4+离子浓度为0.1%时寿命为0.204 1 ms。结果表明,ZrSiO4∶Mn4+粉末拥有良好的发光性能,是一种有望应用于白光LED的荧光粉。

关键词: 红色荧光粉, 硅酸锆, 光谱性能, 发光材料, 高温固相法

Abstract: Zirconium silicate (ZrSiO4) powders with different doping concentrations of Mn4+ were prepared by solid-state reactions. The effect on the photoluminescence properties of ZrSiO4∶Mn4+ was studied. The structure of ZrSiO4∶Mn4+ was analyzed by X-ray powder diffractometer (XRD). The result shows that the powder was completely synthesized at 1 400 ℃. The spectral properties of ZrSiO4∶Mn4+ powders at different doping concentrations were studied. The best luminescence performance was obtained at 0.3%Mn4+ doping concentration. In the excitation spectrum, the peak at 363 nm is caused by the superposition of the charge transfer band of O2--Mn4+ and the 4A2-4T1 energy level transition of the spin-allowed Mn4+, while the peak at 450 nm is caused by the 4A2-4T2 energy level transition of the Mn4+. The main emission peaking at 667 nm was due to the spin-forbidden transitions 2E-4A2 of Mn4+. The other peak located at 698 nm was caused by anti-stokes vibronic sidebands associated with the excited state 2E of Mn4+. The decay curves show that the lifetime of ZrSiO4∶0.1% Mn4+ powders is 0.204 1 ms. The results show that ZrSiO4∶Mn4+ powders have good luminescent properties, they have the potential to be used in LED lighting industry.

Key words: red phosphor, zirconium silicate, spectroscopic property, luminescent material, solid-state reaction

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