A structural and optical properties of Cu-doped ZnO films prepared by spray pyrolysis

Influence of Cu‐Doping on Linear and Nonlinear Optical Properties of High‐Quality ZnO Thin Films Obtained by Spin‐Coating Technique

“…[35] Contrary to the decrease in the dislocation density and the strain, which indicates that there is an improvement in crystal quality by increasing the Cu concentration, which occupies the substitution positions of Zn atoms in the crystal lattice. [37] These results are almost the same observed in the research on Fe-doped ZnO [38] and V-doped ZnO films prepared by the sol-gel method. [39] The negative values of stress on c-axis indicate that the crystal is under a compressive state.…”

“…The copper ion acts as a defect, which leads to the distortion of the ZnO crystal lattice and prevents the increase in the grains growth rate. Ghahramanifard et al [36] and Roguai et al [37] explained this decrease by Zener pining effect of copper and the segregation of Cu atoms in the grain boundaries, respectively. The sample prepared at 6% has the large crystallite size (34.4 nm); this high value is explained by the substitution of Zn þ2 by Cu þ2 .…”

“…are consistent with those reported in the literature. [34][35][36][37] It decreases from 30.7 to 24.9 nm by the addition of Cu to solution from 2% to 4%. The copper ion acts as a defect, which leads to the distortion of the ZnO crystal lattice and prevents the increase in the grains growth rate.…”

The effect of small addition of copper on the growth process, structure, surface charge and adsorption properties of ZnO films in the pyrolysis of dithiocarbamates

“…(4) It was shown that by Cu-doping, the ZnO growth mechanism was changed and the morphology tends to nano-rods array. 142,143 A proposed schematic diagram of core mechanisms specific for Cu-induced interfacial processes of ZnO growth is shown in Fig. 7.…”

Substrate critical effect on the structural and H2Gas sensing characteristics of solution-processed Zn0.075Cu0.025O films

“…No secondary phase was observed in the samples due to the fact that Cu doping ratio was quite low and so copper cluster peaks were not detected. Similar copper doping optimization was realized by Roguai et al [22]. Copper doping ratio arrangement is important because initiation of copper doping can lead to an increase in the free energy of the system and a decrease in structural stability [23].…”