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http://dspace.unimap.edu.my:80/xmlui/handle/123456789/77144
Title: | Meso-porous-like tungsten oxide structure: a study on some physical properties at different deposited temperatures |
Authors: | Farhan, A. Mohamed Azhar, I. Hassan Evan T., Salim Laser Science and Technology Branch, University of Technology evan_tarq@yahoo.com |
Issue Date: | Oct-2022 |
Publisher: | Universiti Malaysia Perlis (UniMAP) |
Citation: | International Journal of Nanoelectronics and Materials, vol.15 (4), 2022, pages 281-292 |
Abstract: | Polycrystalline tungsten oxide (WO3) thin films were prepared using the spray pyrolysis method at various substrate temperatures (200, 250, 300, 350, and 400 °C) on the quartz substrate. The X-ray diffraction pattern showed polycrystalline films with a monoclinic structure. Analysis using field-emission scanning electron microscopy revealed a porous fibrous reticulate morphology. The EDs results reflected the formation of stoichiometric films with optimum stoichiometry at 350 °C substrate temperature. The transmittance spectra at the 300–1100 nm spectral range reached about 55% with a direct band gap of 3.3 eV. The optical constant was also estimated and analyzed, where optical conductivity was found to be about 5.4669 x1014 (Ω cm)-1 while, 2.09 eV was the value of Urbach energy at 350 °C. |
Description: | Link to publisher's homepage at http://ijneam.unimap.edu.my/ |
URI: | http://dspace.unimap.edu.my:80/xmlui/handle/123456789/77144 |
ISSN: | 1985-5761 (Printed) 1997-4434 (Online) |
Appears in Collections: | International Journal of Nanoelectronics and Materials (IJNeaM) |
Files in This Item:
File | Description | Size | Format | |
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Vol 15 No 4 (281-292).pdf | Main article | 753.85 kB | Adobe PDF | View/Open |
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