Impurity-trapped excitons and electron traps in CaF₂:Yb²⁺ and SrF₂:Yb²⁺ probed by transient photoluminescence enhancement
classification
❄️ cond-mat.mtrl-sci
physics.chem-ph
keywords
enhancementcrystalsexcitonsphotoluminescencetransienttrapsbeenchanges
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CaF$_2$:Yb$^{2+}$ and SrF$_2$:Yb$^{2+}$ crystals have been investigated by a two-color UV + IR transient photoluminescence enhancement technique. The enhancement gives information about both changes in internal energy levels of the excitons and liberation of electrons from traps in the crystals.
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