Abstract
Do** is a highly effective tool for modifying the properties of semiconductor thin films. This study quantitatively examines the effect of zinc (Zn) do** on the physical properties of copper oxide (CuO) thin films prepared using a modified SILAR method. The crystalline structure, morphology and optical properties of the obtained samples were further characterized using X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), and UV–visible spectrometry. XRD analysis confirmed the inclusion of Zn into the CuO crystal lattice without altering its monoclinic structure, and no secondary phases such as Cu\(_{2}\)O, Cu(OH)\(_{2}\), or ZnO were detected, indicating high-quality films. SEM images reveal that surfaces are uniformly coated, dense and compact with uniform distribution of grains. EDX spectrum and map** analysis verified the incorporation of Zn atoms into CuO thin films. In addition, the UV–Visible spectroscopy a significantly indicated an increase in transmission and enhanced the bandgap from 1.47 to 1.55 eV with an increase in Zn concentration. The impact of Zn do** on the refractive index and the Urbach energy of CuO nanostructures has been investigated. Zn do** improved the optical properties of the films without trading off the tenorite phase of CuO thin films making them suitable in solar cells applications. Additionally, the impact of Zn-doped CuO on solar cell performance was investigated using the SCAPS-1D program. A novel heterostructure (ITO/Cd\(_{0.4}\)Zn\(_{0.6}\)S/Zn:CuO/Spiro-PMeTAD/Au) designed for CuO-based solar cells was analysed. Firstly, Cd\(_{1-x}\)Zn\(_{x}\)S was investigated as a factor affecting the performance of undoped CuO solar cells. Simulation results demonstrated that increasing Zn do** in CuO enhances solar cell efficiency. Finally, the proposed heterostructure design exhibits promising advancements, highlighting the potential for enhancing solar cell efficiency through targeted material do** and precise heterostructure engineering.
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Data availability
The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
The authors gratefully acknowledge Dr. Marc Burgelman and their team from Gunt University Belgium for develo** the SCAPS-1D simulation software.
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Daoudi, O., Jellal, I., Haddout, A. et al. The outcomes of Zn do** on the properties of CuO thin films prepared via modified SILAR method and its impact on the performance of CuO-based solar cells using Cd0.4Zn0.6S-ETL and Spiro-OMeTAD-HTL. J Mater Sci: Mater Electron 35, 1353 (2024). https://doi.org/10.1007/s10854-024-13094-2
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DOI: https://doi.org/10.1007/s10854-024-13094-2