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Synthesis and characterization of physical properties of the NiO thin films by various concentrations

Maaoui B., Aoun Y., Benramache S., Nid A., Far R., Touati A.

Advances in Materials Science

2020

Vol. 20, nr 3(65)

79--87

In this work, nickel oxide was deposited on a glass substrate at by spray deposition technique; the structural, optical and electrical properties were studied at different NiO concentrations (0.05, 0.10 and 0.15 mol.l-1). Polycrystalline NiO films with a cubic structure with a strong (111) preferred orientation were observed at all sprayed films with minimum crystallite size of 11.97 nm was attained of deposited film at 0.1 mol.l-1. However, α-Ni(OH)2 was observed at 0.15 mol.l-1. The NiO thin films have good transparency in the visible region, the band gap energy varies from 3.54 to 376 eV was affected by NiO concentration, it is shown that the NiO thin film prepared at 0.05 mol.l-1 has less disorder with few defects. The NiO film deposited at 0.15 mol.l-1 has the electrical conductivity was 0.169 (Ω.cm)-1.