Correlation between morphology and electro-optical properties of nanostructured CdO thin films: Influence of Al doping

► Physical properties of the CdO:Al nanostructured films at different Al% are studied. ► Maximum carrier concentration has been achieved for 1 at.% Al doped film. ► The undoped sample has maximum carrier mobility. ► The direct optical band gap shifted to the higher energy. ► The samples have relatively smooth surface with RMS roughness of about 4 nm.