N. Jaba et al., Time-resolved luminescence data on the 1060 nm transition in Nd3+-doped zinc tellurite glasses, J PHYS-COND, 12(32), 2000, pp. 7303-7309
We report time-resolved luminescence data for the F-4(3/2) --> I-4(11/2) tr
ansition in Nd3+-doped zinc tellurite glass. The photoluminescence (PL) sho
ws nonexponential decay and the associated decay time depends on ion concen
tration. PL results are analysed and discussed using the stretched exponent
ial function, commonly used to describe disordered systems. The nonexponent
ial behaviour has been explained as due to a multi-configurational distribu
tion of luminescent ions in a disordered medium. The dipole-dipole interact
ions remain at the origin of the PL decay time shortening.