Comparison of Ce${}^{3+}$ and Pr${}^{3+}$ activators in alkaline-earth fluoride crystals

Abstract

The emission spectra of Ce${}^{3+}$ or Pr${}^{3+}$ doped CaF${}_2$, SrF${}_2$, BaF${}_2$ excited by vacuum ultraviolet photons or by x-ray as well as excitation and absorption spectra in vacuum ultraviolet region (6-13 eV) were studied. The transfer of exciton energy is the main channel for Ce${}^{3+}$ excitation in alkaline-earth fluorides. Three different stages of energy transfer were observed. Pr${}^{3+}$ excited by two processes, slow f-f luminescence excited by excitons, fast d-f luminescence excited by some fast process.

4 pages, 8 figures

Cited by in corpus (1)

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