The Effect of Annealing Temperature on Spin-Coated Zn-doped NiO film for humidity sensing applications / N.F.Q. Fahmi … [et al.]

Mamat, Mohamad Hafiz and Parimon, Norfarariyanti and Zoolfakar, Ahmad Sabirin and Abdul Razak, Abdul Hadi and Banu, I.B. Shameem and Rusop, Mohamad (2020) The Effect of Annealing Temperature on Spin-Coated Zn-doped NiO film for humidity sensing applications / N.F.Q. Fahmi … [et al.]. Journal of Electrical & Electronic Systems Research (JEESR), 16. pp. 100-105. ISSN 1985-5389

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Abstract

Zinc (Zn)-doped nickel oxide (NiO) thin films were fabricated using spin coating technique for humidity sensing applications. Nickel acetate tetrahydrate was used as a precursor material and zinc acetate was used as the dopant source. The films were annealed at various annealing temperatures of 400 ºC, 500 ºC and 550 ºC in ambient. X-ray diffraction (XRD) was used to investigate the structural properties of the samples, while ultraviolet-visible spectroscopy (UV-Vis) was used to characterize the optical properties of the samples. The thickness of the samples was measured using a surface profiler which the thickness are 178.8 nm, 148.0 nm, and 116.9 nm for samples annealed at 400 ºC, 500 ºC and 550 º, respectively. The humidity sensing properties for each sample were characterized using humidity chamber equipped with humidity sensing measurement system which the relative humidity (RH) value was set between 40% RH and 90% RH. The XRD results showed that all samples were in the amorphous state. The average transmittance in the visible region obtained from the UV-vis spectra exceeded 90% transmission for all samples. The highest bandgap obtained is 3.6 eV for Zn-doped NiO annealed at 500 ºC. The humidity sensing results show that a high sensitivity sensor could be produced using sample annealed at 550 ºC.

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Item Type: Article
Creators:
Creators
Email
Mamat, Mohamad Hafiz
mhmamat@uitm.edu.my
Parimon, Norfarariyanti
UNSPECIFIED
Zoolfakar, Ahmad Sabirin
UNSPECIFIED
Abdul Razak, Abdul Hadi
UNSPECIFIED
Banu, I.B. Shameem
UNSPECIFIED
Rusop, Mohamad
UNSPECIFIED
Subjects: T Technology > TJ Mechanical engineering and machinery > Mechanics applied to machinery. Dynamics
T Technology > TJ Mechanical engineering and machinery > Heat engines
T Technology > TJ Mechanical engineering and machinery > Heat engines > Heat. Heat in its applications, as a source of power, etc
Divisions: Universiti Teknologi MARA, Shah Alam > Faculty of Electrical Engineering
Journal or Publication Title: Journal of Electrical & Electronic Systems Research (JEESR)
UiTM Journal Collections: UiTM Journal > Journal of Electrical and Electronic Systems Research (JEESR)
ISSN: 1985-5389
Volume: 16
Page Range: pp. 100-105
Official URL: https://jeesr.uitm.edu.my
Item ID: 42158
Uncontrolled Keywords: Zn doped NiO, Spin coating technique, Humidity sensing properties
URI: https://ir.uitm.edu.my/id/eprint/42158

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42158

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