Journal
THIN SOLID FILMS
Volume 589, Issue -, Pages 412-418Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2015.05.070
Keywords
Nano-particle deposition system; Electrochromic; Tungsten oxide
Categories
Funding
- National Research Foundation of Korea (NRF) - Korea Government (MEST) [NRF-2010-0029227]
- Energy Efficiency & Resources Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) from the Ministry of Trade, Industry & Energy, Republic of Korea [20142020103730]
- NSF EFRI grant [EFRI 1038165]
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We report the deposition of tungsten oxide (WO3) thin films on fluorine-doped tin oxide (FTO) and indium-doped tin oxide (ITO) glass substrates by using a room-temperature deposition system based on low-vacuum air-spray for the fabrication of inorganic electrochromic windows. The structure of the WO3 films was characterized using X-ray diffraction, and the surface morphology and film thickness were investigated using scanning electron microscopy and atomic force microscopy. The color of the prepared WO3 films changed from slight yellow to dark blue under applied voltages, demonstrating electrochromism. TheWO(3) film coated FTO glass exhibited a large electrochromic contrast of up to 50% at a wavelength of 800 nm. The electrochemical properties of the films were examined using cyclic voltammetry and chronocoulometry. (C) 2015 Elsevier B.V. All rights reserved.
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