ISSN (Online) : 2456 - 0774

Email : ijasret@gmail.com

ISSN (Online) 2456 - 0774

Synthesis and Characterisation of SrZrSi₂O₇:Eu³⁺, Ce³⁺, and Dy³⁺Phosphors

Abstract

The present work reports the successful synthesis and detailed characterization of SrZrSi₂ O₇ phosphors doped with trivalenteuropium (Eu³⁺ ), cerium (Ce³⁺ ), and dysprosium (Dy³⁺ ) ions. A sol-gel assisted combustion method was employed, utilizing glycine asa fuel, to produce fine, homogeneous phosphor powders. The structural analysis using X-ray diffraction (XRD) confirmed the formation ofa single-phase tetragonal SrZrSi₂ O₇ structure, with no detectable secondary phases, even after doping with rare-earth ions. Shifts indiffraction peak positions indicated the successful incorporation of dopant ions into the host lattice, suggesting substitutional doping at thestrontium sites. Morphological examination by scanning electron microscopy (SEM) revealed the formation of nearly spherical andmoderately agglomerated particles, while transmission electron microscopy (TEM) provided evidence of nanoscale crystallinity anduniform grain distribution. Further confirmation of the chemical structure was obtained through Fourier-transform infrared spectroscopy(FT-IR), which identified characteristic vibrational modes corresponding to Si–O and Zr–O bonds. The combined results affirm that thesol-gel combustion route is a reliable and efficient method for synthesizing highly crystalline, uniformly doped SrZrSi₂ O₇ phosphors.These materials are expected to be promising candidates for advanced optical and electronic applications due to their structural integrityand fine particle morphology.Keywords: SrZrSi₂ O₇ , Phosphors, Rare-earth doping and characterisation

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