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人工晶体学报 ›› 2021, Vol. 50 ›› Issue (9): 1702-1708.

• 研究论文 • 上一篇    下一篇

Eu3+掺杂Sr3Y2TeO9的红色荧光粉

杨寅, 杨伟斌, 罗新, 谢岚驰, 林洪沂, 熊飞兵   

  1. 厦门理工学院光电与通信工程学院,厦门 361024
  • 收稿日期:2021-06-17 出版日期:2021-09-15 发布日期:2021-10-15
  • 通讯作者: 熊飞兵,博士,教授。E-mail:fbxiong@xmut.edu.cn
  • 作者简介:杨 寅(1998—),男,贵州省人,硕士研究生。E-mail:1923162830@qq.com
  • 基金资助:
    福建省自然科学基金(2020J05239)

Red-Emitting Eu3+-Doped Sr3Y2TeO9 Phosphors

YANG Yin, YANG Weibin, LUO Xin, XIE Lanchi, LIN Hongyi, XIONG Feibing   

  1. School of Optoelectronics and Communication Engineering, Xiamen University of Technology, Xiamen 361024, China
  • Received:2021-06-17 Online:2021-09-15 Published:2021-10-15

摘要: 采用高温固相法制备了一系列Sr3Y2-xTeO9xEu3+新型红色荧光粉,研究了Sr3Y2-xTeO9xEu3+的物相结构、发光性能、衰减寿命以及热稳定性。研究结果表明新型红色荧光粉Sr3Y2-xTeO9xEu3+能在近紫外光或蓝光激发下发出强烈的红光,并确定了Sr3Y2-xTeO9xEu3+的浓度猝灭机制是电偶极-电偶极之间相互作用。其色坐标结果表明,随着掺杂浓度的增加该荧光粉的色坐标均在红色区域。温度相关荧光发射光谱揭示了该荧光粉具有良好的热稳定性。荧光衰减曲线显示在Sr3Y2-xTeO9xEu3+荧光粉中当x=0.34时为最佳掺杂浓度,其平均荧光寿命为0.619 ms。综合以上研究结果表明新型红色荧光粉Sr3Y2-xTeO9xEu3+在荧光转换近紫外激发白光二极管中具有良好的应用前景。

关键词: 白光LED, Eu3+, 碲酸盐, Sr3Y2-xTeO9, 红色荧光粉, 高温固相法, 光致发光, 光学性质

Abstract: A series of new red-emitting Sr3Y2-xTeO9xEu3+ phosphors were prepared by high temperature solid-state method, and the phase structure, luminescent performances, decay life and thermal stability of Sr3Y2-xTeO9xEu3+ were studied. The results show that new red-emitting Sr3Y2-xTeO9xEu3+ phosphors can emit intensive red light under near-ultraviolet or blue light excitation, and it demonstrate that the concentration quenching mechanism is attributed to the dipole-dipole interaction between Eu3+ ions. The color coordinates of these phosphors with different Eu3+ concentrations are in the red spectral region. The temperature-dependent luminescences emission spectra reveal that these phosphors show good thermal stability. The optimal doping concentration of Eu3+ is x=0.34 for Sr3Y2-xTeO9xEu3+ phosphor, and its fluorescence decay lifetime is deduced to be 0.619 ms. These overall results show that new red-emitting Sr3Y2-xTeO9xEu3+ is promising phosphor applied in phosphor-converted near UV-excited white light-emitting diodes.

Key words: white LED, Eu3+, tellurate, Sr3Y2-xTeO9, red phosphor, high temperature solid-state method, photoluminescence, optical property

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