Efficiency of Dy3+‐Activated Phosphors

Abstract

The quantum efficiency of Dy3+‐activated phosphors is reasonably high in lattices where a low activator concentration (≤ 1%) is already sufficient for effective energy transfer from the lattice to the activator ions. When more activator is needed for effective energy transfer, the quantum efficiency is limited due to concentration quenching of the Dy3+ emission. The results are compared with those of corresponding Eu3+‐ and Tb3+‐activated phosphors.