Abstract
The structural, optical and morphological properties of Ni-doped ZnO (NZO) thin films were studied by X-ray diffraction (XRD), ultraviolet–visible absorbance spectroscopy (UV–Vis), Photoluminescence spectroscopy (PL), atomic force microscopy (AFM), Field emission scanning electron spectroscopy (FESEM) and Fourier transform infrared spectroscopy (FTIR). 0%, 3%, 5%, and 7% NZO thin films were deposited on fused silica substrate by pulsed laser deposition (PLD) technique at a substrate temperature of 300 ºC at oxygen partial pressure of 1 mTorr. XRD results show that all deposited films were crystalline and oriented along (002) plane with wurtzite symmetry. All deposited films also show high transmittance in the UV–Visible region (300–800 nm) and their band gaps were calculated using Tauc’s formulation. NZO thin films show a lesser bandgap i.e. 3.20 eV for 3% and 3.11 eV for 7% Ni doped ZnO film as compared to pure ZnO films. Photoluminescence shows emission in the visible region at 430 nm. AFM and FESEM results revealed the uniform deposition of NZO and ZnO films over a fused silica substrate and FTIR analysis shows the shifting of Zn–O–Zn band towards higher wavenumber region with different Ni concentrations. Results obtained from this study indicate that NZO thin films grown by PLD technique can be a promising candidate for optoelectronic application.
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The data that support the findings of this study are not openly available and are available from the corresponding author upon reasonable request.
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Acknowledgements
One of the authors Prateek Gupta would like to thank the Department of Atomic Energy–UGC to provide us with experimental facilities. The author also likes to thank JIIT Noida-62 for experimental facilities support. The author wants to say thanks to Dr. Maneesha Garg and Tamanna Sharma from the Department of Physics of J.C Bose University of Science and Technology, YMCA Faridabad, India.
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Experiment, characterization, analysis, writing original draft: Prateek Gupta.Review and Editing, Supervisor: Dr. B.C. Joshi.
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Gupta, P., Joshi, B.C. Effect of Ni incorporation on structural, optical, morphological properties of ZnO thin films deposited by laser ablation. J Mater Sci: Mater Electron 34, 1559 (2023). https://doi.org/10.1007/s10854-023-10985-8
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DOI: https://doi.org/10.1007/s10854-023-10985-8