Non-radiative energy transfer between Eu³⁺ and Er³⁺ ions in zinc phosphate glass

Abstract

A study of non-radiative energy transfer in Eu³⁺-Er³⁺has been done by observing the steady state emission of Eu³⁺ with varying concentration of Er³⁺in zinc phosphate glass at room temperature. It has been observed that Eu³⁺ion emission intensity decreases with increasing Er³⁺ concentration resulting in a non-radiative energy transfer from Eu³⁺ to Er³⁺. The energy transfer mechanism for Eu-Er system is mainly found electric dipole-dipole in nature. Various parameters necessary for quantitative study e.g. energy transfer efficiencies, transfer probabilities etc. between Eu³⁺ and Er³⁺have been computed.