OPTICAL PROPERTIES OF ZnO NANOMATERIALS SYNTHESIZED BY THERMAL METHOD

Abstract

Nano-sized ZnO materials have been synthesized by thermal method, at temperature800OC, in presence of an anionic surfactant, sodium dodecyl sulphatr (SDS). The nanoparticles were characterized by X-Ray diffraction (XRD), Scanning Electron Microscope (SEM), and Electron Dispersive X-Ray (EDX) methods. XRD study show that ZnO crystals have hexagonal closed packed structure. SEM result reveals dumb-bell-like and rod-like morphologies of the nanomaterials which are found to be heterogeneous in nature. Optical properties of the nanomaterials were examined by UV-visible analysis and the band gap and the average radius of the particles have been found to be 3.27 eV and 3.57 nm, respectively.