Issue 3, 2022, Issue in Progress

Improving the properties of Fe2O3 by a sparking method under a uniform magnetic field for a high-performance humidity sensor

Abstract

Iron oxide (Fe2O3) thin films are promising semiconductors for electronic applications because Fe2O3 is an earth-abundant semiconductor with an appropriate band gap. However, many methods for the synthesis of Fe2O3 thin films require a corrosive source, complex procedures, and many types of equipment. Here, we report, for the first time, a simple method for Fe2O3 deposition using sparking under a uniform magnetic field. The morphology of Fe2O3 displayed an agglomeration of particles with a network-like structure. The crystallite size, % Fe content, and optical bandgap of Fe2O3 were influenced by changes in the magnitude of the magnetic field. For application in humidity sensors, Fe2O3 at a magnetic field of 200 mT demonstrated a sensitivity of 99.81%, response time of 0.33 s, and recovery time of 2.57 s. These results can provide references for new research studies.

Graphical abstract: Improving the properties of Fe2O3 by a sparking method under a uniform magnetic field for a high-performance humidity sensor

Article information

Article type
Paper
Submitted
09 Oct 2021
Accepted
15 Dec 2021
First published
10 Jan 2022
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2022,12, 1527-1533

Improving the properties of Fe2O3 by a sparking method under a uniform magnetic field for a high-performance humidity sensor

P. Tippo, P. Singjai, W. Sroila, T. Jaisamer, N. Suttanon, A. Panthawan, E. Kantarak, W. Sroila, W. Thongsuwan, T. Kumpika and O. Wiranwetchayan, RSC Adv., 2022, 12, 1527 DOI: 10.1039/D1RA07490C

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