Spin coating method deposited nickel oxide thin films with various film thicknesses

The objective of this research is to study the influence film thickness on optical and electrical properties prepared NiO thin films. Nickel oxide films have been glass substrates by a spin coating technique using nickel nitrate hexahydrate (Ni(NO 3 ) 2 .6H O) as source materials. process was repeated 11, 13, 15, 17 layer times obtain good film. characterizations were observed be dependent each thickness. smaller layers high transmission (over 88%) in visible range. bandgap energy found range 3.94–4.06 eV depending lowest value Urbach 0.182 eV. measurements are investigated four-point method; results show that conductivity for sample with around 171 nm.