Structural & Optical Properties of Co DOPED SnO2 Nanoparticles Synthesised By Microwave Assisted Solvothermal Method

Cobalt doped Tin Oxide nanoparticles (Sn1-xCoxO2, x = 0.01 – 0.04) are synthesized by microwave assisted solvothermal method. The as prepared samples are annealed with 550 °C for 1 h. The XRD pattern shows that the particles are in tetragonal crystalline structure and there is no secondary phase. The particle sizes are calculated as 14 – 19 nm. TEM images and the SAED pattern reveal the crystalline nature of the samples and confirm the particle size from XRD results. From the UV-Vis spectroscopy it has found out that the optical band gap of the samples increases with the dopant ratio. The functional group analysis made from FTIR spectrum.