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

• Published in: Journal of materials science. Materials in electronics 2021-05, Vol.32 (9), p.12466-12474
• Main Authors: Omri, K., Alharbi, F.
• Format: Article
• Language: English
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Crystal defects; Diffusion; Glass ceramics; Heat treatment; Light emitting diodes; Luminescence; Manganese ions; Materials Science; Nanomaterials; Optical and Electronic Materials; Optical properties; Phosphors; Photoluminescence; Point defects; Sol-gel processes; Thermometry; White light; Zinc silicates
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-021-05880-z

Mn 2+ -doped β-Zn 2 SiO 4 -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 Mn 2+ ions substitute for Zn 2+ 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.