Sol-Gel Derived Tungsten Oxide Thin Films Deposited by Spin Coating Technique Using Tungsten Powder as Starting Material

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Published: Dec 30, 2018
Keywords:
Sol-gel tungten oxide spin coating annealing temperature

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Orawan Thanomkiat
Faculty of Science Energy and Environment, King Mongkut’s University of Technology North Bangkok Rayong Campus, 21120, Thailand
Russameeruk Noonuruk
Division of Physics, Faculty of Science and Technology Rajamangala University of Technology Thanyaburi, Thanyaburi, Pathumthani, 12110, Thailand
Chokchai Kahattha
Program of Physics, Faculty of Science and Technology, Sakon Nakhon Rajabhat University, 680 Nittayo Road, Mueang District, Sakon Nakhon, 47000, Thailand

Abstract

Tungsten oxide (WO3) thin films were deposited onto F-doped tin oxide (FTO) substrates using spin coating technique. The starting precursor for tungsten source was prepared from tungsten powder (Aldrich 12 micron; 99.9%) dissolved in 15% hydrogen peroxide. The coated films were annealed in ambient air for 2 hours at different annealing temperatures ranging from 200-500 °C. The differential-thermogravimetric measurement on the starting stock solution was performed to study its thermal property and decomposition/transformation. It was informed that the phase transformation and tungsten oxide crystallization was initiated at the temperature beyond 300 °C. X-ray diffraction was employed to characterize structural properties of the prepared films. The relevant chemical bonding of the films was investigated by fourier transform infrared spectroscopy. The optical and electrochromic properties of thin films were monitored by mean of UV-Vis spectroscopy technique. Further results and discussed will be represented in details.

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1.
Thanomkiat O, Noonuruk R, Kahattha C. Sol-Gel Derived Tungsten Oxide Thin Films Deposited by Spin Coating Technique Using Tungsten Powder as Starting Material. Thai J. Nanosci. Nanotechnol. [Internet]. 2018 Dec. 30 [cited 2024 Nov. 22];3(2):1-6. Available from: https://ph05.tci-thaijo.org/index.php/TJNN/article/view/54
Issue
Vol. 3 No. 2 (2018): TJNN
Section
Research Articles
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