Collection of scientific works Nanosystems, nanomaterials, nanotechnologies
Year 2025 Volume 23, Issue 4
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Omar AYED and Mushtaq Abed AL-JUBBORI

College of Education for Pure Sciences, Department of Physics, University of Mosul, 41001 Mosul, Iraq

Effect of Substrate Temperature on the Optical Properties of Copper-Oxide Nanostructured Thin Films by Chemical Spray Pyrolysis

1115–1127 (2025)

PACS numbers: 68.37.Hk, 68.37.Vj, 78.20.Ci, 78.40.Fy, 78.67.Sc, 81.16.Pr, 82.30.Lp

Received 20 May, 2024; in revised form, 2 June, 2024

Nanostructured thin copper-oxide (CuO) films are grown by the chemical spray pyrolysis (CSP) technique. Utilising a homemade spray pyrolysis method, thin films are created. This work investigates the role of the gamma and ultraviolet rays' irradiation in the optical properties of thin CuO films prepared. In this framework used different substrate temperatures of 300, 350 and 400°C, the layers are grown on glass for the prepared thin CuO films. UV-visible spectrometer and field-emission scanning electron microscopy (FE-SEM) are used to characterize the samples. The UV-visible spectroscopy shows a decrease in the absorbance and the optical band gap of thin CuO films with the increase in the higher substrate temperatures. Additionally, surface-plasmon resonance peaks (λSPR) is observed at 329 nm. FE-SEM images reveal spherical-like shapes with an average diameter range of 48 nm, 56 nm and 62 nm for 300, 350 and 400°C, respectively.

KEY WORDS: CSP technique, substrate temperature, optical properties, FE-SEM

DOI: https://doi.org/10.15407/nnn.23.04.1115

Citation:
Omar Ayed and Mushtaq Abed Al-Jubbori, Effect of Substrate Temperature on the Optical Properties of Copper-Oxide Nanostructured Thin Films by Chemical Spray Pyrolysis, Nanosistemi, Nanomateriali, Nanotehnologii, 23, No. 4: 1115–1127 (2025); https://doi.org/10.15407/nnn.23.04.1115

Funding / Acknowledgments:
The authors would like to express their warmest thanks to the University of Mosul, College of Education for Pure Science, Department of Physics for supporting this work.

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