Cu₂O nanorods have been deposited on soda-lime glass (SLG) substrates by the modified SILAR technique by varying the concentration of NaCl electrolyte into the pre-cursor complex solution. The structural, electrical, and optical properties of synthesized Cu₂O nanorod films have been studied by a variety of characterization tools. Structural analyses by XRD confirmed the polycrystalline Cu₂O phase with (111) preferential growth. Raman scattering spectroscopic measurements conducted at room temperature also showed characteristic peaks of the pure Cu₂O phase. The surface resistivity of the Cu₂O nanorod films decreased from 15,142 to 685 Ω.cm with the addition of NaCl from 0 to 4 mmol, and then exhibited an opposite trend with further addition of NaCl. The optical bandgap of the synthesized Cu₂O nanorod films was observed as 1.88~2.36 eV, while the temperature-dependent activation energies of the Cu₂O films were measured as about 0.14~0.21 eV. SEM morphologies demonstrated Cu₂O nanorod as well as closely packed spherical grains with the alteration of NaCl concentration. The Cu₂O phase of nanorods was found stable up to 230℃ corroborating the optical bandgap results of the same. The film fabricated in presence of 4 mmol of NaCl showed the lowest resistivity and activation energy as well comparatively uniform nanorod morphology. Our studies demonstrate that the nominal presence of NaCl electrolytes in the pre-cursor solutions has a significant impact on the physical properties of Cu₂O nanorod films which could be beneficial in optoelectronic research.

The found data set from the XRD, Raman spectra, UV-Vis, SEM, etc. are used to calculate the properties or related properties used in the article by using OriginLab, N graph, Sigmaplot, excel, etc.