Impurity-trapped excitons and electron traps in CaF$_2$:Yb$^{2+}$ and SrF$_2$:Yb$^{2+}$ probed by transient photoluminescence enhancement

Details Impurity-trapped excitons and electron traps in CaF$_2$:Yb$^{2+}$ and SrF$_2$:Yb$^{2+}$ probed by transient photoluminescence enhancement Impurity-trapped excitons and electron traps in CaF$_2$:Yb$^{2+}$ and SrF$_2$:Yb$^{2+}$ probed by transient photoluminescence enhancement

2011-07-25

arxiv.org/abs/1107.4888v3

Physics

Condensed Matter

Materials Science

Minor updates and add DOI

Scientific paper

10.1016/j.jlumin.2011.09.043

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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