| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 78896 | Solar Energy Materials and Solar Cells | 2012 | 6 Pages |
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 (∼132 cm2/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.
► Novel crystalline tungsten oxide nano-urchins were synthesized by a solvothermal method. ► Their electrochromic performances were systematically compared by tuning morphology and crystalline phases. ► High volume to surface ratio and phase of uniform W18O49 nano-urchins lead to enhanced electrochromic performance.
