Study the Effect of Cu Doping on Optical and Structural Properties of NiO Thin Films

Annals of West University of Timisoara: Physics

Guezzoun Hanane¹  Benramache Said²  Benhaoua Boubaker³ 

[1] Department of Physics, University of El-Oued, 39000, Algeria.;Material Sciences Department, Faculty of Science, University of Biskra07000, Algeria;Renewable Energy Research Unit in Arid Zones, University of El-Oued, 39000, Algeria.;

关键词: cu;    nio;    thin films;    spain coater method;    polycrystalline structure;    electrical conductivity;   

DOI  :  10.2478/awutp-2020-0002

来源: DOAJ

【 摘 要 】

In this work, copper doped nickel oxide as the thin films have been elaborated by a spin coating method, the nickel chloride hexahydrate (0.8M) and copper (II) chloride dehydrate (Cu/Ni = 0, 2.15, 4.3, 8.6 and 12.9 At.%) were used to prepare the Cu doped NiO thin films. The Cu doped NiO thin films were heated at a crystallization temperature of 600 °C with 2 h. The obtained thin films by spin coater method have a film thickness in the order of 400 nm. The prepared Cu doped NiO thin films have a polycrystalline with cubic structure (200) peak was observed. The optical property shows that the prepared thin films have a transmittance of about 70 %. The Cu doped NiO thin films have minimum bandgap energy is 3.85 eV at 12.9 at.%, the thin film deposited at 8.6 at.% has the highest value of Urbach energy is 425 meV. The Cu doped NiO thin films have a high electrical conductivity of 8.6 at% it is 7 (Ω.cm)−1. The prepared Cu doped NiO thin film was suitable for gas sensing applications due to the existing phase and higher electrical conductivity.

【 授权许可】

Unknown