Energy transfer in CsCdBr3 : Nd3+ system
Résumé
CsCdBr3 doped with trivalent rare earths is an attractive system to study energy transfer phenomena. Trivalent rare earths substituted to Cd2+ can be associated in pairs close to a Cd2+ vacancy. In these systems, cooperative relaxation (up conversion and cross relaxation) are very efficient. A comparaison between Nd3+ absorption and excitation spectra shows that the great majority of Nd3+ are associated in one kind of pairs even in low doping crystals.
Domaines
Articles anciens
Origine : Accord explicite pour ce dépôt