Nkhaili, L.L.NkhailiEl Aakib, H.H.El AakibCHI-TE LIANGNarjis, A.A.NarjisAitdads, H.H.AitdadsEl Kissani, A.A.El KissaniOutzourhit, A.A.Outzourhit2021-07-282021-07-282021https://www.scopus.com/inward/record.url?eid=2-s2.0-85095737454&partnerID=40&md5=e8812075b92854d98c1d737b63cdbd49https://scholars.lib.ntu.edu.tw/handle/123456789/573435In this paper, a ZnO/CdS/CuO:Co solar cell was prepared on a glass/indium oxide (ITO) substrate. First, we use RF-sputtering to deposit the window (ZnO) layer by optimizing the oxygen pressure while keeping the RF power at 200 W. Fourier transform infrared and X-ray reflectometry spectra were carried out, and it is found that 30% of O2 is the optimal percentage to obtain the best density and the best refractive index for the ZnO layer. The CdS layer was then deposited by the sol-gel method to align the energy bands, and a layer of CuO:Co with a thickness of 750 nm was deposited, also by reactive RF-sputtering technique. Finally, the electrical contacts were made by depositing circular silver electrodes. The obtained photovoltaic activity of device confirms that the aforementioned method is promising for further future optimizations. © 2020 BMJ Publishing Group. All rights reserved.[SDGs]SDG7Cadmium sulfide; Copper oxides; II-VI semiconductors; ITO glass; Oxide minerals; Refractive index; Sol-gel process; Sol-gels; Solar cells; Zinc oxide; Electrical contacts; Fourier transform infra reds; Oxygen pressure; Photovoltaic activities; Reactive rf sputtering; Rf-sputtering; Silver electrode; X-ray reflectometry; Sulfur compoundsjournal article10.1115/1.40487912-s2.0-85095737454