Eu3+ Ion Probe and Judd-Ofelt Theory: A Computational Approach to Determine Er3+ Parameters in Nagdxyb1-Xf4 Nanomaterials

Abstract

Given the outstanding luminescent stability of rare earth ions, it has widespread applications across various fields. However, research on NaGdxYb1-xF4 nanomaterials doped with Er3+ remains insufficient and requires further investigation. The Judd-Ofelt (JO) theory provides a robust framework for computational analysis in this context. While JO parameters are typically determined through absorption spectra, in Eu-doped materials, JO analysis can be performed using the luminescence characteristics of the Eu3+ magnetic dipole transition. This study aims to prepare monodispersed NaGdxYb1-xF4 nanomaterials co-doped with Er3+/Eu3+ using a hydrothermal method. By leveraging the stability of Eu3+ magnetic dipole transitions, the JO theory was applied to calculate relevant parameters of Er3+. The results demonstrate that this approach enables accurate measurement of rare earth ion concentrations and their JO parameters in cyclohexane solution, offering a novel strategy for determining these critical parameters.

Keywords: Judd-Ofelt, Magnetic dipole transitions, Er3+, Eu3+