Nanostructured ZnO Zinc oxide 3 Atomic force microscopy 2 Ultraviolet visible spectroscopy 2 X ray diffraction 2 Band gap 1 Band gap narrowing 1 Close cycle cryostats 1 Conduction-band minimum 1 Crystallite size 1 Doping 1 Doping (additives) 1 Electrical conductivity 1 Electron energy levels 1 Electronic equipment 1 Energy gap 1 Energy level 1 Field emission microscopes 1 Field emission scanning electron microscopy 1 Film preparation 1 II-VI semiconductors 1 IV characteristics 1 Immersion method 1 Immersion process 1 Manganese 1 Manganese oxide 1 Manufacture 1 Metallic films 1 Microstructure 1 Nanomaterials 1