Design rule for the emission linewidth of Eu2+-activated phosphors
(2020) Journal of Luminescence — Vol. 224, p. 117258 (2020)
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Jia, Yongchao 
- Abstract
- We study from first principles the emission linewidth of Eu2+-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 Eu2+ 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 Eu2+-doped LED phosphors are expected for the case with large positive value of such difference.
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Citations
Jia, Y., Poncé, S., Miglio, A., Mikami, M., & Gonze, X. (2020). Design rule for the emission linewidth of Eu2+-activated phosphors. Journal of Luminescence, 224, 117258. https://doi.org/10.1016/j.jlumin.2020.117258 (Original work published 2020)