Journal of Metals, Materials and Minerals
Publication Date
2025
Abstract
Semiconductor-based gas sensors frequently encounter difficulties in attaining optimal performance due to challenges such as temporal stability and low sensitivity, stemming from their insulating properties at room temperature. To address these limitations, this study proposes a novel approach by preparing cobalt-doped LaFeO3 (LaFeO3-Co) using the co-precipitation method, with doping concentrations of 2.5 mol% and 5.0 mol%. The acetone gas sensors were fabricated into thick films via the screen-printing technique, and their performance was thoroughly characterized. X-ray diffraction (XRD) analysis confirmed a cubic crystal structure, and the addition of 2.5 mol% cobalt was found to reduce the particle size of LaFeO3, enhancing its gas-sensing performance. Conversely, the addition of 5.0 mol% of cobalt led to an increase in particle size, which might have hindered sensor performance. Electrical characterization revealed that the LaFeO3-Co sensor with 2.5 mol% doping achieved the highest response of 13.30 at 330°C and 270 ppm of acetone gas. This study underscores the promise of Co-doped LaFeO3 in enhancing gas-sensing capabilities, marking a substantial advancement in the development of high-performance acetone gas sensors. However, further optimization and investigation are necessary to fully realize its potential for commercialization.
DOI
10.55713/jmmm.v35i1.1919
First Page
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Last Page
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Recommended Citation
Setiawan, Andhy; Sheelmarevaa, Farah Aprisza; Taufik Ulhakim, Muhamad; Syarif, Dani Gustaman; and Suhendi, Endi
(2025)
"Enhancing acetone gas sensor performance with cobalt oxide doping in LaFeO3 prepared by co-precipitation,"
Journal of Metals, Materials and Minerals: Vol. 35:
No.
1, Article 2.
DOI: 10.55713/jmmm.v35i1.1919
Available at:
https://digital.car.chula.ac.th/jmmm/vol35/iss1/2