In this article, a series of Eu-doped oxynitride phosphate glass samples are prepared. It is shown that the photoluminescence of Eu can be tuned through different alkaline earth metal ions (M²⁺). The luminous intensity of Eu²⁺ decreases with increasing ionic radius in the order of Mg＜Ca＜Sr＜Ba. And with the increased mismatch degree of radius between M²⁺ and Eu ions, the luminescence of Eu³⁺ gains intensity. The effects of M²⁺ on structure and luminescence characteristics of glass are mainly due to the following three factors: the field strength of M²⁺, the degree of mismatch between M²⁺ and Eu ions, and the influence of alkaline earth metals on the coordination tendency of N³⁻ and O²⁻ with Eu ions. The reduction mechanism is explained by combining the unequal substitution of Eu³⁺ ions for divalent alkaline earth metal cations with the reduction of Eu³⁺ by O²⁻ and N³⁻ ions. Our work provides a new perspective for studying the luminescence characteristics and mechanism of Eu ions in oxynitride Phosphate Glasses.

在本文中，制备了一系列Eu掺杂的氧氮化磷玻璃样品。结果表明，可以通过不同的碱土金属离子（M ²⁺）调节Eu的光致发光。Eu ²⁺的发光强度随着离子半径的增加而降低，依次为Mg ＜Ca ＜Sr ＜Ba。随着M ²⁺与Eu离子之间半径的失配度增加，Eu ³⁺的发光强度增加。M的影响²⁺玻璃的结构和发光特性，主要是由于以下三个因素：M的场强²⁺，M之间的失配度²⁺和Eu离子，以及碱土金属对N ^3-和O ^2-与Eu离子配位趋势的影响。通过将Eu ³⁺离子对二价碱土金属阳离子的不等取代与O ^2-和N ^3-离子对Eu ³⁺的还原相结合来解释还原机理。我们的工作为研究磷氧玻璃中Glasses离子的发光特性和机理提供了新的视角。