التفاصيل البيبلوغرافية
| العنوان: |
Preparation of porous WO3 film and its electrochromic properties. (English) |
| المؤلفون: |
LI Zijia, WANG Meihan, WEI Liying, MU Dongyu, SONG Ran, ZHANG Jun |
| المصدر: |
Journal of Functional Materials / Gongneng Cailiao; 2023, Vol. 54 Issue 9, p09172-09176, 5p |
| مستخلص: |
Porous WO3 films were produced by adding appropriate amount of dodecyla mine to WO3 sol-gel pre¬cursors prepared from tungsten powder and hydrogen peroxide, and then heat-treated at 400 °C for 2 h. The crystal structure and surface morphology of the films were characterized by X-ray diffractometer (XRD), scan¬ning electron microscopy (SEM) and energy dispersive spectrometer (EDS). The electrochromic properties were tested during an electrochemical workstation and a spectrophotometer. The results suggest the WO3 films present a partially crystallized amorphous structure and a porous surface. The current density of the porous WO3 films is larger and the reversibility is better. Porous WO3 films provide more channels for ion/electron diffusion which accelerate the injection/extrusion rate and shorten the response time. At the wavelength of 600 nm, the light modulation amplitude is 58.42%, which is 4.18% more than that of the dense WO3 film. Com-pared with the dense WO3 films the optical density change and coloring efficiency increase to 11.7% and 8.4%, respectively. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
