Photoluminescence studies in Sc : CaF2 and Sc,Ce : CaF2 crystals

Academic Article

Abstract

  • Stokes and anti-Stokes UV-visible luminescence was investigated in γ-irradiated Sc and Sc-Ce doped CaF2 crystals. Wideband Stokes luminescence under laser or CW lamp excitation was measured: (1) at 380 nm (luminescence decay time τ ∼ 17 μs) in Sc: CaF2 and Sc,Ce : CaF2 crystals, attributed to Sc2+ ions and (2) at 300 nm (τ ∼ 40ns) in Sc,Ce : CaF2 crystals, due to Sc-Ce aggregate centers. Anti-Stokes luminescence in the 250-350 nm spectral range with a 1 μs lifetime can be explained by exciton luminescence.
  • Authors

    Published In

    Digital Object Identifier (doi)

    Author List

  • Mirov SB; Dergachev AY; Sibley WA; Esterowitz L; Basiev TT; Sigachev VB; Papashvili AG
  • Start Page

  • 35
  • End Page

  • 40
  • Volume

  • 69
  • Issue

  • 1