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人工晶体学报 ›› 2021, Vol. 50 ›› Issue (1): 43-52.

• 研究论文 • 上一篇    下一篇

Na+,Dy3+,Eu3+掺杂YAG荧光粉的光学性能

李晴1,2,3, 王林香1,2,3, 柏云凤1,2,3, 阿热帕提·夏克尔1,2,3   

  1. 1.新疆师范大学物理与电子工程学院,乌鲁木齐 830054;
    2.新疆师范大学,矿物发光及其微结构重点实验室,乌鲁木齐 830054;
    3.新疆师范大学,新型光源与微纳光学重点实验室,乌鲁木齐 830054
  • 收稿日期:2020-10-26 出版日期:2021-01-15 发布日期:2021-03-01
  • 通讯作者: 王林香,博士,副教授。E-mail:wanglinxiang23@126.com
  • 作者简介:李 晴(1995—),女,四川省人,硕士研究生。E-mail:441300506@qq.com
  • 基金资助:
    新疆维吾尔自治区自然科学基金(2017D01A60);新疆维吾尔自治区高校科研计划(XJEDU2018Y032);研究生科技创新项目(XSY202002004)

Optical Properties of Na+, Dy3+ and Eu3+ Doped YAG Phosphors

LI Qing1,2,3, WANG Linxiang1,2,3, BAI Yunfeng1,2,3, AREPATI Xiakeer1,2,3   

  1. 1. School of Physics and Engineering, Xinjiang Normal University, Urumqi 830054, China;
    2. Key Laboratory of Novel Luminescent Materials and Nanostructures, Xinjiang Normal University, Urumqi 830054, China;
    3. Key Laboratory of Novel Light Source and Micro/Nano-Optics, Xinjiang Normal University, Urumqi 830054, China
  • Received:2020-10-26 Online:2021-01-15 Published:2021-03-01

摘要: 本文用高温固相法制备了Na+,Dy3+,Eu3+掺杂YAG系列荧光粉。通过改变掺杂的Dy3+浓度、激发波长、掺杂Na+,研究其对发光的影响。X射线衍射结果显示,硼酸、Na+、Dy3+、Eu3+掺入基本不影响YAG的立方晶相,且随Na+、Dy3+、Eu3+浓度增加,样品衍射峰位置向小角度偏移。用λem=590 nm监测Dy3+,15%Eu3+共掺YAG粉体,随Dy3+浓度增加,Eu3+和Dy3+的激发强度均先增大后减小。当用λex=366 nm激发Dy3+,15%Eu3+共掺YAG粉体,此时存在Eu3+→Dy3+的能量传递,计算得到Eu3+→Dy3+的能量传递效率为84.23%。相比10%Dy3+,15%Eu3+共掺YAG,掺入0.5%Na+后,样品中Dy3+发光增强1.5倍,色坐标(0.348 1,0.397),色温5 010 K,接近标准白光。用λex=394 nm激发Dy3+,15%Eu3+共掺YAG粉体,此时存在Dy3+→Eu3+的能量传递,计算得到Dy3+→Eu3+的能量传递效率为88.9%。相比10%Dy3+,15%Eu3+共掺YAG,掺入0.5%Na+后,Eu3+发光增强1.8倍,色坐标(0.466 7,0.416 8),色温2 650 K,达到商用暖白光标准。

关键词: Na+,Dy3+,Eu3+掺杂YAG粉体, 高温固相法, 能量传递, 荧光寿命, 色坐标, 色温

Abstract: The Na+, Dy3+, Eu3+ doped YAG series phosphors were prepared by high-temperature solid-phase method. Change the doped Dy3+ concentration, excitation wavelength, and doped Na+ to study its influence on luminescence. X-ray diffraction results show that the doping of boric acid, Na+, Dy3+, Eu3+ does not affect the cubic phase of YAG, and with the increase of Na+, Dy3+, Eu3+ concentration, the sample diffraction peak position shifts to a small angle. Use λem=590 nm to monitor Dy3+, 15%Eu3+ co-doped YAG powder, with the increase of Dy3+ concentration, the excitation intensity of Eu3+ and Dy3+ both increase first and then decrease. When λex=366 nm is used to excite Dy3+, 15%Eu3+ co-doped YAG, at this time, there is an energy transfer of Eu3+→Dy3+, the calculated energy transfer efficiency of Eu3+→Dy3+ is 84.23%.Compared with 10%Dy3+, 15%Eu3+ co-doped YAG, the Dy3+ luminescence in the sample is enhanced by 1.5 times after doping 0.5%Na+, the color coordinate is (0.348 1,0.397), and the color temperature is 5 010 K, which is close to standard white light. When λex=394 nm is used to excite Dy3+, 15%Eu3+ co-doped YAG, at this time, there is energy transfer from Dy3+→Eu3+, the calculated energy transfer efficiency of Dy3+→Eu3+ is 88.9%. Compared with 10%Dy3+, 15%Eu3+ co-doped YAG, Eu3+ luminescence is enhanced 1.8 times after doping 0.5%Na+, the color coordinate is (0.466 7, 0.416 8), and the color temperature is 2 650 K, which meets the commercial warm white light standard.

Key words: Na+, Dy3+, Eu3+ doped YAG phosphor, high-temperature solid-phase method, energy transfer, fluorescence lifetime, color coordinate, color temperature

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