Ceramics-Silikáty 49 (1) 63-67 (2005)

EFFECTS OF PREPARATION PROCESS ON DECAY LIFETIME OF LaPO₄:Ce,Tb PHOSPHORS

Y. Yang, Ch. Li, S. Yuan, B. Fang, G. Chen

A two-step reaction method was used to prepare superfine LaPO₄:Ce,Tb phosphor particles under two set of conditions. The crystallinity and particle morphology of the product were characterized by using XRD, SEM and particle size analysis, and decay lifetime was investigated as a function of preparation conditions. Results highlighted that an appropriate preparation process leads to less-aggregated LaPO₄:Ce,Tb phosphor with greatly improved decay lifetime.

Keywords: LaPO₄:Ce,Tb phosphor, Preparation, Decay