Microstructure and luminescence thermometry of transparent Mn–SZO glass ceramics with highly efficient Mn²⁺

Mn²⁺-doped β-Zn₂SiO₄-based glass–ceramics phosphors, labeled Mn–ZSO, were synthesized by the sol–gel method. How much variation in the Mn dopant concentration influences on their structural and optical properties is discussed in detail. In fact, the heat treatment promotes the atomic diffusion and generates an increase in size, a reduction in point defects, and consequently, a better crystallinity of the Mn–SZO particles. Analysis of X- ray diffraction (XRD) data proved that the Mn²⁺ ions substitute for Zn²⁺ ions in the ZSO matrix. The incorporation of certain pure or doped nanomaterials in a matrix produces an increase in luminescence and a modification of the structure of the emission spectrum. Moreover, the photoluminescence (PL) emissions of Mn–SZO-based glass–ceramics were examined as a manganese percentage and exposed a good emission. The PL emissions spectrum conveys a yellow emission as well as decay time. Our findings indicate that the present materials (yellow phosphors) have several potential benefits as though white light-emitting diodes.