Journal of Hebei University(Natural Science Edition) >

2023 , Vol. 43 >Issue 5: 463 - 469

DOI: https://doi.org/10.3969/j.issn.1000-1565.2023.05.003

Effect of Ga3+ on the luminescence property of Mg14Ge5O24:Cr near infrared material

  • XU Yanmei ,
  • QIN Xiaodong ,
  • LIANG Shaolong ,
  • WANG Jiarui ,
  • WANG Xuejiao ,
  • WANG Zhijun
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  • 1.Department of Mathematics and Physics, North China Electric Power Unversity, Baoding 071003, China; 2.College of Physics Science and Technology, Hebei University, Baoding 071002, China

Received date: 2023-01-09

  Online published: 2023-10-25

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Abstract

Mg14Ge5O24:Cr near-infrared(NIR)phosphors were synthesized by the high-temperature solid-phase method to achieve the coexistence of Cr3+ and Cr4+ valence luminescence. The crystalline phases of the samples were analyzed using XRD and GASA refinement software. The material has two luminescence centers, one from Cr3+ occupying the octahedral Ge4+ position with an emission band in the NIR I region and a half-peak width up to 256 nm, and the other from Cr4+ occupying the tetrahedral Ge4+ position with an emission band in the NIR II region and a half-peak width up to 266 nm. The luminescence properties of the material were analyzed by low-temperature spectra and lifetime decay curves. The modulation of Cr3+ and Cr4+ luminescence can be achieved by using Ga3+ instead of Ge4+. The addition of large radius Ga3+ ions generates new lattice sites, which affects the overall crystal field intensity, and a phosphor with more intense luminescence in the NIR I region is obtained.

Key words： luminescence; near infrared; Mg14Ge5O24:Cr; Ga3+

Cite this article

XU Yanmei , QIN Xiaodong , LIANG Shaolong , WANG Jiarui , WANG Xuejiao , WANG Zhijun . Effect of Ga3+ on the luminescence property of Mg14Ge5O24:Cr near infrared material[J]. Journal of Hebei University(Natural Science Edition), 2023 , 43(5) : 463 -469 . DOI: 10.3969/j.issn.1000-1565.2023.05.003

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