Sensing of Ethanol with Nanosize Fe-ZnO Thin Films. (15th April 2009)

• Record Type: Journal Article
• Authors: Kuo, G.-H.; Wang, H. Paul; Hsu, H. H.; Wang, James; Chiu, Y. M.; Jou, C.-J. G.; Hsu, T. F.; Chen, F.-L.
• Other Names: Lau Alan K. T. Academic Editor.
• Is Part Of: Journal of nanomaterials. Volume 2009(2009)
• Publication Date: 2009-04-15
• Subjects: Nanostructured materials -- Periodicals; Nanotechnology -- Periodicals; Nanomatériaux; Nanostructured materials; Nanotechnology; Nanostructures; Nanotechnology; Periodicals; Fulltext; Internet Resources; Periodicals; 620.115
• DOI: 10.1155/2009/316035
• Languages: English
• ISSNs: 1687-4110

Abstract

Abstract : Sensing of ethanol with iron doped ZnO (Fe-ZnO) thin films has been studied in this work. By X-ray diffraction spectroscopy, it is found that ZnO is the main compound in the low-iron (<10%) doped ZnO thin films.ZnFe 2 O 4 is also found as 20–50% of iron are doped on the thin films. The 5% Fe-ZnO thin film has a very high sensitivity (R air /R ethanol > 70 ) to 1000 ppm of ethanol at 300 K. It seems that iron can promote the sensivity of the ZnO thin film. The thin film doped with a greater amount (20–50%) of iron has, however, a much less sensitivity (<15) to ethanol. The chemical interactions between oxygen of ethanol and zinc on the Fe-ZnO thin film cause changes of the bond distances of Zn–O and Fe–O in the thin films to 1.90 and 1.98 Å which can be restored to 1.91 and 1.97 Å, respectively, in the absence of ethanol.