Influence of temperature on spectral-luminescent properties of trivalent cerium salts

Abstract

To establish a correlation between the spectral properties of the Ce ion and the structure of its coordination sphere in aqueous solutions, the authors study the temperature dependence of the absorption spectra, luminescence, and luminescence excitation spectra and also the duration of luminescence of solutions of cerium salts in water and in concentrated perchloric acid. They present and discuss their experimental results and conclude that, although their study gives valuable information on the coordination sphere of ions in the ground and excited states, still further investigation might clarify the possible rearrangement of the coordination sphere of other ions during excitation that leads to absorption bands.