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Deep insight into the luminescence performance of Li2MgSiO4:Mn2+ green phosphor synthesized by a sol-gel process

Publication ,  Journal Article
Wang, Z; Yu, J; Tang, F; Zheng, C; Zhang, L; Tian, K
Published in: Journal of Luminescence
February 1, 2022

A sol-gel process together with a low-temperature sintering technique was applied for preparing Mn2+ activated Li2MgSiO4 green phosphor. Phase structure information was derived from the Rietveld refinement on its powder X-ray diffraction pattern. The luminescence performance was evaluated by characterizing the photoluminescence (PL) spectral evolution with Mn2+ concentration and in the temperature range of 300–500 K. The optimal Mn2+ doping level was 4 at% and the main PL quenching mechanism was identified to be the electric dipolar-dipolar interaction. The temperature-dependent PL spectra showed broad asymmetric line-profiles, and the underlying phonon effect was revealed from both experimental and theoretical works. The predominant phonon energy was determined to be 25 meV, and the luminescence quenching at high temperatures was mainly attributed to the six-phonon coupling interaction with the Mn2+ optical center, which was further confirmed from the simulation on PL spectral lineshape. These obtained results may provide us an unprecedented approach to study the phonon effect on the luminescence characteristic for the phosphors.

Duke Scholars

Published In

Journal of Luminescence

DOI

ISSN

0022-2313

Publication Date

February 1, 2022

Volume

242

Related Subject Headings

  • Applied Physics
  • 3402 Inorganic chemistry
  • 0306 Physical Chemistry (incl. Structural)
  • 0205 Optical Physics
 

Citation

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Wang, Z., Yu, J., Tang, F., Zheng, C., Zhang, L., & Tian, K. (2022). Deep insight into the luminescence performance of Li2MgSiO4:Mn2+ green phosphor synthesized by a sol-gel process. Journal of Luminescence, 242. https://doi.org/10.1016/j.jlumin.2021.118563
Wang, Z., J. Yu, F. Tang, C. Zheng, L. Zhang, and K. Tian. “Deep insight into the luminescence performance of Li2MgSiO4:Mn2+ green phosphor synthesized by a sol-gel process.” Journal of Luminescence 242 (February 1, 2022). https://doi.org/10.1016/j.jlumin.2021.118563.
Wang Z, Yu J, Tang F, Zheng C, Zhang L, Tian K. Deep insight into the luminescence performance of Li2MgSiO4:Mn2+ green phosphor synthesized by a sol-gel process. Journal of Luminescence. 2022 Feb 1;242.
Wang, Z., et al. “Deep insight into the luminescence performance of Li2MgSiO4:Mn2+ green phosphor synthesized by a sol-gel process.” Journal of Luminescence, vol. 242, Feb. 2022. Scopus, doi:10.1016/j.jlumin.2021.118563.
Wang Z, Yu J, Tang F, Zheng C, Zhang L, Tian K. Deep insight into the luminescence performance of Li2MgSiO4:Mn2+ green phosphor synthesized by a sol-gel process. Journal of Luminescence. 2022 Feb 1;242.
Journal cover image

Published In

Journal of Luminescence

DOI

ISSN

0022-2313

Publication Date

February 1, 2022

Volume

242

Related Subject Headings

  • Applied Physics
  • 3402 Inorganic chemistry
  • 0306 Physical Chemistry (incl. Structural)
  • 0205 Optical Physics