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Condensed Matter > Materials Science

arXiv:2109.05780 (cond-mat)
[Submitted on 13 Sep 2021]

Title:Design rule for the emission linewidth of Eu$^{2+}$-activated phosphors

Authors:Yongchao Jia, Samuel Poncé, Anna Miglio, Masayoshi Mikami, Xavier Gonze
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Abstract:We study from first principles the emission linewidth of Eu$^{2+}$-doped LED phosphors. Based on the one-dimensional configuration coordinate model, an analysis of first principles data obtained for fifteen compounds show that, at working temperature, the linewidth of Eu$^{2+}$ emission band in solids is negligibly affected by quantum effects, and can be extracted from the Franck-Condon energy shifts. For a fixed Stokes shift, the difference of Franck-Condon energy shifts in the excited and ground states is the key factor for the FWHM determination. Narrow emission Eu$^{2+}$-doped LED phosphors are expected for the case with large positive value of such difference.
Comments: 6 pages, 4 figures
Subjects: Materials Science (cond-mat.mtrl-sci)
Cite as: arXiv:2109.05780 [cond-mat.mtrl-sci]
  (or arXiv:2109.05780v1 [cond-mat.mtrl-sci] for this version)
  https://doi.org/10.48550/arXiv.2109.05780
Related DOI: https://doi.org/10.1016/j.jlumin.2020.117258

Submission history

From: Yongchao Jia [view email]
[v1] Mon, 13 Sep 2021 08:58:08 UTC (369 KB)
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