无机材料学报 ›› 2023, Vol. 38 ›› Issue (12): 1475-1482.DOI: 10.15541/jim20230059

所属专题: 【信息功能】透明陶瓷与闪烁晶体(202312)

• 研究快报 • 上一篇    下一篇

Dy3+掺杂SrGdGa3O7晶体的晶体生长, 结构、光学和可见光荧光特性

王海东1,2,3(), 王燕1,3, 朱昭捷1,3, 李坚富1,3, LAKSHMINARAYANA Gandham4, 涂朝阳1,3()   

  1. 1.中国科学院 福建物质结构研究所, 福州 350002
    2.中国科学院大学, 北京 100049
    3.中国福建光电信息科学与技术创新实验室(闽都创新实验室), 福州 350108
    4.韩国庆北国立大学智能建筑自动化中心, 大邱 41566, 韩国
  • 收稿日期:2023-02-06 修回日期:2023-02-27 出版日期:2023-09-12 网络出版日期:2023-09-12
  • 通讯作者: 涂朝阳, 研究员. E-mail: tcy@fjirsm.ac.cn
  • 作者简介:王海东(1997-), 男, 硕士研究生. E-mail: wanghaidong@fjirsm.ac.cn

Crystal Growth and Structural, Optical, and Visible Fluorescence Traits of Dy3+-doped SrGdGa3O7 Crystal

WANG Haidong1,2,3(), WANG Yan1,3, ZHU Zhaojie1,3, LI Jianfu1,3, LAKSHMINARAYANA Gandham4, TU Chaoyang1,3()   

  1. 1. Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
    3. Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, China
    4. Intelligent Construction Automation Center, Kyungpook National University, Daegu 41566, Republic of Korea
  • Received:2023-02-06 Revised:2023-02-27 Published:2023-09-12 Online:2023-09-12
  • Contact: TU Chaoyang, professor. E-mail: tcy@fjirsm.ac.cn
  • About author:WANG Haidong (1997-), male, Master candidate. E-mail: wanghaidong@fjirsm.ac.cn
  • Supported by:
    National Natural Science Foundation of China(51832007);National Natural Science Foundation of China(51872286);National Key Research and Development Program of China(2022YFB3605704);NSFC-Joint Funds for Regional Innovation and Development(U21A20508);Science and Technology Plan Leading Project of Fujian Province(2022H0043);Science and Technology Plan Leading Project of Fujian Province(2020H0036);Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China(2021ZR204);Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China(2020zz108);The 14th Five-year Plan Project of FJIRSM(E255KL0101);Science and Technology Service Network Initiative(2019T3006)

摘要:

采用Chzochralski方法成功生长了Dy3+掺杂的SrGdGa3O7晶体, 并对其结构和光学特性进行了详细研究。基于XRD数据, 采用Rietveld法优化了晶体的晶格参数。分析了Dy: SrGdGa3O7晶体的偏振吸收谱、偏振发射谱和荧光衰减曲线。在452 nm处, π偏振和σ偏振对应的吸收截面分别为0.594×10-21和0.555×10-21 cm2。计算得到的有效J-O强度参数Ω2Ω4Ω6分别为5.495×10-20、1.476×10-20和1.110×10-20 cm2。J-O理论分析和荧光光谱表明: 在452 nm激发下, Dy: SrGdGa3O7晶体4F9/26H13/2跃迁在可见光波段具有最高的荧光分支比和荧光强度, 在574 nm处的π和σ偏振发射截面分别为1.84×10-21和2.49×10-21 cm2。Dy3+: 4F9/2能级的辐射寿命和荧光寿命分别为0.768和0.531 ms, 量子效率为69.1%。研究结果表明: Dy3+: SrGdGa3O7晶体是一种潜在的可用于蓝光LD泵浦实现黄激光的材料。

关键词: 晶体生长, Dy3+: SrGdGa3O7, 光学性能, 黄光发射

Abstract:

Dy3+-doped SrGdGa3O7 crystal was successfully grown through the Czochralski method and investigated in detail for its structural and optical features. Its crystallographic lattice parameters were optimized by Rietveld refinement based on XRD data. Polarized absorption spectra, polarized emission spectra, and fluorescence decay curves of Dy: SrGdGa3O7 crystal were analyzed. Absorption cross-sections at 452 nm corresponding to π- and σ-polarization were computed as 0.594×10-21 and 0.555×10-21 cm2, respectively. Calculated effective J-O intensity parameters Ω2, Ω4, and Ω6 were 5.495×10-20, 1.476×10-20, and 1.110×10-20 cm2, respectively. J-O analysis and emission spectra show that transition 4F9/26H13/2 of Dy: SrGdGa3O7 crystal has the highest fluorescence branching ratio and fluorescence intensity under 452 nm excitation within the visible spectral region, the emission cross-sections of π- and σ-polarization were 1.84×10-21 and 2.49×10-21 cm2 at the wavelength of 574 nm, respectively. The measured radiative lifetime and fluorescence decay time of the Dy3+: 4F9/2 level were 0.768 and 0.531 ms with a quantum efficiency of 69.1%. All these results reveal that Dy3+: SrGdGa3O7 crystal is a promising material for yellow lasers pumped with blue laser diodes.

Key words: crystal growth, Dy3+: SrGdGa3O7, optical properties, yellow emission

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