Preparation of ZnO thin film for gas sensors using spray pyrolysis technique
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Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Institute of Electrical and Electronics Engineers Inc.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this article, the focus was on the properties of ZnO thin films and how they relate to the performance of sensors used to find oxygen gas and present an easy technique for producing zinc oxide (ZnO) thin films deposited onto normal glass substrates. The synthesis process includes using a precursor solution with a concentration of 0.1 M, which is carried out by applying a low-cost homemade spray pyrolysis technique. X-ray diffraction data is used to do an expanded structural analysis. The scanning electron microscopy image and chosen region electron diffraction pattern assist the structural investigation. After annealing at 500°C, the crystallite sizes are less than 50 nm. This means that the films can be used in nanomaterial applications like gas sensor devices. The observed pattern formation in XRD indicates the preferred orientation is the (101) plane. Spray pyrolysis often yields superior results for many types of applications, especially when compared to other methods. Using atomic force microscopy revealed a dense and uniform arrangement of nanocrystalline structures. The film is also uniformly distributed throughout the substrate. UV-visible spectroscopy examines the optical characteristics, providing more evidence that nanostructures have formed. These results support the preparation of these nanostructures for use in gas sensing applications. The effect of ZnO was more evident after annealing the film, as shown by the observed changes in energy gap behavior and grain size, which as a result influenced the sensor features. The sensitivity and response time enhancement can be observed while annealing the film at a temperature of 500°C.
Açıklama
Anahtar Kelimeler
Gas sensor, O2, Spray pyrolysis, Thin film, ZnO
Kaynak
7th International Symposium on Multidisciplinary Studies and Innovative Technologies, ISMSIT 2023 - Proceedings
WoS Q Değeri
Scopus Q Değeri
N/A
Cilt
Sayı
Künye
Abdulhadi, M. O., Al-Jumaili, S., & Uçan, O. N. (2023, October). Preparation of ZnO thin film for gas sensors using spray pyrolysis technique. In 2023 7th International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT) (pp. 1-6). IEEE.
