Cobalt doping ZnO nanoparticles: from substitutional doping to interstitial expansion for optoelectronic applications
The influence of cobalt (Co) doping on the structural and optical properties of ZnO nanoparticles (NPs) synthesized via the sol–gel method was investigated. The obtained nanopowder was calcined at 400 °C for 2 h in a muffle furnace. X-ray diffraction (XRD) patterns were analyzed using the Rietveld refinement method, co...