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Title: Crystalline phases and optical properties of titanium dioxide films deposited on glass substrates by microwave method
Authors: Wonchai Promnopas
Surin Promnopas
Thirawit Phonkhokkong
Titipun Thongtem
Dheerawan Boonyawan
Liangdeng Yu
Orawan Wiranwetchayan
Anukorn Phuruangrat
Somchai Thongtem
Keywords: Chemistry
Materials Science
Physics and Astronomy
Issue Date: 25-Nov-2016
Abstract: © 2016 Elsevier B.V. Anatase films were deposited on glass substrates by 180, 300, 450 and 500 W microwave for 1.5 min. Upon calcination the 450 and 500 W films at 450 °C for 1 h, additional rutile phase was detected by X-ray diffraction (XRD). Scanning electron microscopy (SEM) and atomic force microscopy (AFM) analyses revealed morphologies of the films which were composed of a number of nanoparticles orientated in different directions with the lowest roughness for the film synthesized by 450 W microwave combined with the high temperature calcination. Band gaps of the films without calcination determined by UV–visible spectroscopy were 3.30–3.35 eV and were considerably decreased to 2.92–3.20 eV by the high temperature calcination.
ISSN: 02578972
Appears in Collections:CMUL: Journal Articles

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