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Optimization of Precursor Volume and its Impact on the Characterization of Copper Oxide Thin Films Deposited by Nebulizer Spray Pyrolysis Technique

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Abstract:

A typical Nebulizer Spray Pyrolysis (NSP) technology was used to produce and deposit CuO nanoparticles on glass substrates. In this work, the effects of different precursor volumes on the properties of CuO thin films produced by Nebulizer Spray Pyrolysis (NSP) were investigated. In this work, CuO thin films have been developed using the NSP approach with three different precursor quantities (3, 4, and 5 ml). A monoclinic crystal structure was found using X-ray diffractometry (XRD), which was confirmed to be consistent with JCPDS card No. (89-5899). The XRD studies have been used to calculate the dislocation density, micro strain, and crystallite size. The average thickness was measured using a surface profilometer. High-resolution Schottky emitter FE-SEM has been used to study morphological properties, and the results demonstrate that each film has been evenly deposited on the glass substrate. The presence of the element in the CuO thin films has been confirmed by energy dispersive X-ray analysis (EDAX). Transmission values ranging from 20% to 65% at varied volumes were achieved, according to the optical measurements. The energy band gaps were determined using tauc plots to be between 1.85 eV and 2.15 eV, with 4 ml having the lowest band gap value at 1.85 eV. CuO thin-film’s electrical conductivity was measured in DC, and the highest conductivity value for 4ml was 2.5x10-8 S/cm.

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Periodical:

Solid State Phenomena (Volume 392)

Pages:

41-50

DOI:

https://doi.org/10.4028/p-Z7PCzc

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Online since:

April 2026

Authors:

V. Jagadeesan*, J. Charles Babu

Keywords:

CuO, Electrical Characteristics, FESEM, Nanoparticles, Thin Films, XRD

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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