Journal
CHEMICAL PHYSICS LETTERS
Volume 473, Issue 1-3, Pages 126-130Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2009.03.043
Keywords
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Funding
- New Energy and Industrial Technology Development Organization (NEDO) in Japan
- Ministry of Eduction, Culture, Sports, Science and Technology of Japan
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Nanotree-like hexagonal tungsten oxide (WO3) arrays were grown on metal tungsten substrates by a facile hydrothermal method. The WO3 nanotrees, composed of 'trunks' and 'branches', were single crystals oriented in the < 001 > direction. Nanotree thin. films exhibited efficient electrochromism due to their large tunnels in the crystal and nano-channels between the nanotrees. Moreover, their coloration efficiency and reversibility were superior to polycrystalline WO3 films. (C) 2009 Elsevier B. V. All rights reserved.
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