Growth Parameter Optimization and Tb3+ Sensitization of Ce3+ Activated Y 3Al5 O 12 Phosphor

Abstract

Cerium activated has been grown by liquid phase epitaxy (LPE) from a flux. Cathodoluminescence measurements of show an internal efficiency of 6.5% at the film composition and optimal growth conditions. Numerous lanthanide ions were studied in a series of LPE film growths to evaluate each as a sensitizer of Ce³⁺emisson in hosts. Tb³⁺ additions increased the cathodoluminescence by 70% to yield an internal efficiency of 11%. The conditions of LPE growth which provide maximum performance in and in are discussed. Consideration is given to reagent purity of the solute and flux components. The luminescence of was analyzed by photoluminescence and time‐resolved cathodoluminescence. The energy transfer from Tb³⁺ to Ce³⁺ in the host crystal was demonstrated by both techniques.