Effect of surfactants on the structural, microstructural, optical, and photoluminescence characteristics of nanostructured SnO2 compounds

• DOI: 10.1016/j.rio.2024.100677
• Publication Date: 2024-04-08T16:00:51Z
• Authors: Rayees Ahmad Parry; Kumud Dubey; Anchit Modi; N.K. Gaur
• Keywords: Absorbance; Tetragonal crystal system; Rutile; Absorption edge

This study explores how various surfactants (CTAB, PVA, and SLS) affect the properties of SnO2 nanoparticles synthesized via co-precipitation. The impact these on crystal structure, microstructure, bandgap characteristics was analyzed using XRD, FE-SEM, FTIR, UV–Vis-NIR, PL spectroscopy techniques. phase purity assessed X-ray powder diffraction Fourier-transform infrared (FTIR), confirming a tetragonal rutile structure (P42/mnm (1 3 6) space group). crystalline size determined Scherer Williamson-Hall FTIR analysis identified Sn-O vibrational modes other functional groups. Scanning electron microscopy (SEM) revealed spherical-shaped particles with flake-like grain matching distribution. UV–Vis absorption explored optical properties, determining absorbance Tauc's plot. Photoluminescence (PL) response observed under 248 nm illumination, showing peaks (363.6–558.6 nm) attributed to near band edge emission defect energy levels from Sn interstitials oxygen vacancies. CIE parameters, including color coordinates (x, y), color-correlated temperature nanoparticles. provides valuable insights into potential applications pure surfactant-assisted in optoelectronics