Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 107, Issue -, Pages 81-86Publisher
ELSEVIER
DOI: 10.1016/j.solmat.2012.07.030
Keywords
Tungsten oxide; Nano-urchin; Nano-wires; Nano-sphere; Electrochromic device
Funding
- Basic Science Research Program through the National Research Foundation of Korea(KRF)
- ministry of Education, Science and Technology [2010-0016622]
- Kyungpook National University Research Fund
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We report on the electrochromic performance of the novel crystalline tungsten oxide nano-urchins comprised of the W18O49 nano-wires added to the sphere shell. The performance of electrochromic devices was systematically compared by using tungsten oxide nano-structures with and without nano-wires on the surface of nano-sphere and with different phase of W18O49 and WO3. The optimized electrochromic films with nano-urchin-like W18O49 exhibited a fast switching response time, outstanding high coloration efficiency (similar to 132 cm(2)/C), and durability within acidic electrolyte. This performance can be attributed to the high volume to surface ratio and phase of uniform urchin-like tungsten oxides. (C) 2012 Elsevier B.V. All rights reserved.
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