Microstructural properties and improvement in photoluminescence thermometry of Mn-activated single-phased Zn–SO–Mn phosphors

• Published in: Journal of materials science. Materials in electronics 2021-10, Vol.32 (19), p.24229-24239
• Main Authors: Omri, K., Alharbi, F.
• Format: Article
• Language: English
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Emission analysis; Exponential functions; Heat treatment; Materials Science; Microstructure; Morphology; Nanomaterials; Nanoparticles; Optical and Electronic Materials; Particle size; Phosphors; Photoluminescence; Physical properties; Point defects; Science; Sol-gel processes; Thermometry; Zinc silicates
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-021-06888-1

Fabrication by sol–gel and study of the physical properties of Mn 2+ doped Zn 2 SiO 4 (Zn–SO–Mn) materials phosphors (heat-treated at 1500 °C) were reported. The morphology, microstructure and size of the particles were resolved by the XRD and TEM techniques. Moreover, PL measurements of the samples phosphors demonstrate a good emission at 576 nm (yellow: 4 T 1 – 6 A 1 ). The decay kinetics of the emission (yellow: 4 T 1 – 6 A 1 ) was analyzed (fitting: a single exponential function). After the adjustment, the Zn–SO–Mn samples exhibited that the lifetime is around 13.09 ms. These lifetime are considered as promising values compared to those obtained until now. In fact, these results provide a simple means of obtaining the phosphors have excellent yellow luminescence which is very interesting for several technological applications.