In the present work, undoped nickel oxide (NiO) and doped copper thin films were deposited on 500°C heated glass substrates using  spray pyrolysis at (0-5wt%) range of dopant, we were obtained by decomposition of nickel nitrate hexahydrate in double distilled water [1-2]. Effect of 0-5 wt. % copper doping on structural, , optical and electrical properties of NiO thin films was studied. XRD indicates that the 0-5 wt. % copper doped NiO thin films have polycrystalline nature with cubic structure and (111) plane as preferential orientation. Crystallite size of the films changes, from 37.1 to 11.7nm, with the Cu doping level. Ni-O bonds vibrations modes in the product of films were confirmed by FT-IR analysis . Transparency of the films was decreased from 64-35% with increasing Cu doping was observed with an increase in the band gap energy values, from 3.62 to 3.95eV, after doping. All the films are deposited p-type semiconductor showing an increase in their conductivity, from 2.33 to 5.91í—10^-2 Ω^-1.cm^-1, with Cu increasing.

Figure 1. X-ray patterns of undoped and Cu-doped NiO thin films.

Keywords: NiO thin films; spray pyrolysis; X-ray diffraction.

References:

[1]. R. Barir, B. Benhaoua, S. Benhamida, A. Rahal, T. Sahraoui and R. Gheriani," Journal of Nanomaterials, vol. 2017, (2017) pp. 10.

[2]. S. Chen, T. Kuo, Y. Lin and C. Chang," in Advanced Materials Research, Ed., (2010) pp. 181-184.

Topic:

1.Topic: -Nanomaterials