Luminescence of BaSiO3 Crystals Doped with Er3+ and Yb3+
Résumé
The Stokes and anti-Stokes luminescence of undoped and rare-earth-doped (Er3+ and Yb3+) BaSiO3 has been studied in the temperature range 78-450 K under excitation at 10-1000 mV. The results indicate that the emission mechanism in BaSiO3 crystals is hole recombination and that the anti-Stokes luminescence is due to consecutive sensitization; that is, the Yb3+ ions in the BaSiO3 compound act as luminescence sensitizers, and the Er3+ ions, as activators.