Abstract:
The photoluminescence spectra of impurity centers containing the anionic vacancy Cd+va or Zn+va in alkaline-earth fluorides are studied. A comparison with the luminescence spectra of photochromic centers (РC), which can be considered as perturbed F centers, shows that the luminescence of the Cd+va or Zn+va centers is similar to the luminescence of F centers and, therefore, is associated with charge transfer from an impurity ion to an anionic vacancy.
Keywords:
luminescence, alkaline earth fluorides, color centers.
Citation:
A. V. Egranov, R. Y. Shendrik, T. Yu. Sizova, “Charge transfer and F type centers in alkaline-earth fluorides activated by Cd+va or Zn+va ions”, Optics and Spectroscopy, 128:10 (2020), 1462–1466; Optics and Spectroscopy, 128:10 (2020), 1572–1576