Impact of withdrawal speed on the properties of CuO films deposited via sol-gel dip coating

IF 2.3 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS Journal of Sol-Gel Science and Technology Pub Date : 2024-12-19 DOI:10.1007/s10971-024-06648-7

Nur Amaliyana Raship, Siti Nooraya Mohd Tawil, Mohd Zainizan Sahdan, Nurliyana Mohamad Arifin

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Abstract

The growing demand for superior gas sensors has led researchers to increasingly focus on materials characterization, given its critical role in enhancing gas sensing capabilities. In this study, different withdrawal speeds were investigated on the properties of CuO films deposited using the sol-gel dip-coating technique. The findings revealed that the optimal conditions for the CuO film were achieved at a withdrawal speed of 70 mm/min. The XRD results indicated that all CuO films exhibits pure CuO phase resembling higher crystallinity and larger crystallite sizes. Surface morphology from FESEM analysis revealed more uniform surfaces and well-developed flower-like structures. For AFM results, topology images showed a smoother surface with low roughness. Surface profiler measurements observed that the film thickness have direct relationship toward withdrawal speeds, showing an optimal thickness and thinner films are at lower withdrawal speed. By utilizing the four-point probe, electrical resistivity measurements revealed a higher quality of structural and surface properties of films consequently led to a decrease in electrical resistivity. The results indicate that CuO films deposited at 70 mm/min have favorable features for gas sensor applications, highlighting the importance of withdrawal speed in optimizing film properties towards sensor performance.

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来源期刊

Journal of Sol-Gel Science and Technology 工程技术-材料科学：硅酸盐

CiteScore

4.70

自引率

4.00%

发文量

280

审稿时长

2.1 months

期刊介绍： The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.