Improving the properties of Fe2O3 by a sparking method under a uniform magnetic field for a high-performance humidity sensor. Issue 3 (10th January 2022)

• Record Type: Journal Article
• Authors: Tippo, Posak; Singjai, Pisith; Sroila, Waraporn; Jaisamer, Tipsuda; Suttanon, Nongpanita; Panthawan, Arisara; Kantarak, Ekkapong; Sroila, Wattikon; Thongsuwan, Wiradej; Kumpika, Tewasin; Wiranwetchayan, Orawan
• Is Part Of: RSC advances. Volume 12:Issue 3(2022)
• Page Start: 1527
• Page End: 1533
• Publication Date: 2022-01-10
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d1ra07490c
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Fe2 O3 deposition by a sparking method under a uniform magnetic field. Abstract : Iron oxide (Fe2 O3 ) thin films are promising semiconductors for electronic applications because Fe2 O3 is an earth-abundant semiconductor with an appropriate band gap. However, many methods for the synthesis of Fe2 O3 thin films require a corrosive source, complex procedures, and many types of equipment. Here, we report, for the first time, a simple method for Fe2 O3 deposition using sparking under a uniform magnetic field. The morphology of Fe2 O3 displayed an agglomeration of particles with a network-like structure. The crystallite size, % Fe content, and optical bandgap of Fe2 O3 were influenced by changes in the magnitude of the magnetic field. For application in humidity sensors, Fe2 O3 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.