[Luminescence properties and energy transfer between Ce3+ and Tb3+ ions in KA1F4: Ce, Tb].
Matrix KA1F4 was prepared through reaction of mixtures of solution K2CO3 upon certain solution of Al(OH)3 plus HF(40%),dehydrating at 100 degrees C and annealing for 48hr at 450 degrees C. A series of KA1F4 : Ce,Tb phosphors were synthesized by a solid reaction method. Their excitation and emission spectra have been investigated. It was observed that Ce3+ can effectively sensitize Tb3+ in KA1F4, so as to enhance the emission of Tb3+ significantly. KA1F4 :Ce,Tb might be a new high efficient green emitting phosphor.
Wu
G
G
Department of Chemistry, Anqing Normal College, 246011 Anqing.
Chen
R
R
Zhang
Q
Q