R. Valiente, F. Rodríguez, J. González, H. U. Güdel, R. Martín-Rodríguez, L. Nataf, M. N. Sanz-Ortiz and K. Krämer
High pressure optical spectroscopy of Ce3+-doped Cs2NaLuCl6
Chem. Phys. Lett. 481, 149-151 (2009)
Abstract:
The study of the f
d transition
on Ce3+-doped Cs2NaLuCl6,
through the absorption and emission spectra at
high pressure, allows us to conclude that the
equilibrium Ce–Cl bond distance in the excited
state is shorter than in the ground state. The
observed band shifts of –530 ± 20 cm–1/GPa
and –415 ± 10 cm–1/GPa in absorption
and emission, respectively, reveal reduction of
the Stokes shift and the spin–orbit interaction
with pressure.