scholarly journals Electrochromic Properties of Lithium-Doped Tungsten Oxide Prepared by Electron Beam Evaporation

Coatings ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 191 ◽  
Author(s):  
Jui-Yang Chang ◽  
Ying-Chung Chen ◽  
Chih-Ming Wang ◽  
Wen-Nan Wang ◽  
Chih-Yu Wen ◽  
...  

In this study, xLi2O-(1−x)WO3 powders were mixed with WO3 and Li2O and pressed into target pellets to fabricate electrochromic films on indium tin oxide (ITO) glasses prepared by electron beam evaporation under the parameters of room temperature, and thicknesses of about 530 nm. It was expected that the amount of charge stored in the electrochromic devices (ECDs) could be enhanced by using the doping method in the cathode materials. The experimental results show that as the composition of Li0.18W0.82O2.6 powder was formed, the optimal characteristics of ECD can be obtained. In which, as a voltage of 3.5 V was applied on ECD, a transmittance change (ΔT%) of 53.1%, an optical density (ΔOD) of 0.502, an intercalation charge (Q) of 12.9 mC/cm2 and a coloration efficiency (η) of 41.6 cm2/C at a wavelength of 550 nm can be achieved. These results demonstrate that Li2O doping in WO3 films could effectively improve the coloration and electrochromic properties of ECD devices.

2017 ◽  
Vol 25 (2) ◽  
pp. 243-250
Author(s):  
Nguyen Nang Dinh ◽  
Le Dinh Trong ◽  
Pham Duy Long

Bulk nanostructured perovskites of La0.67-xLi3xTiO3 (LLTO) were prepared by using thermally ball-grinding from compounds of La2O3, Li2CO3 and TiO2. From XRD analysis, it was found that LTTO materials were crystallized with nano-size grains of an average size of 30 nm. The bulk ionic conductivity was found strongly dependent on the Li+ composition, the samples with x = 0.11 (corresponding to a La0.56Li0.33TiO3 compound) have the best ionic conductivity, which is ca. 3.2 x 10-3 S/cm at room temperature. The LLTO amorphous films were made by electron beam deposition. At room temperature the smooth films have ionic conductivity of 3.5 x 10-5  S/cm and transmittance of 80%. The optical bandgap of the films was found to be of 2.3 eV. The results have shown that the perovskite La0.56Li0.33TiO3  thin films can be used for a transparent solid electrolyte in ionic battery and in all-solid-state electrochromic devices, in particular.    


Nanoscale ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 276-284 ◽  
Author(s):  
Raquel Pruna ◽  
Manel López ◽  
Francesc Teixidor

The performance of transparent nanostructured indium tin oxide electrodes prepared by electron beam evaporation is optimized for biosensing purposes.


2004 ◽  
Vol 447-448 ◽  
pp. 115-118 ◽  
Author(s):  
Mika Yamaguchi ◽  
Ari Ide-Ektessabi ◽  
Hiroshi Nomura ◽  
Nobuto Yasui

1998 ◽  
Vol 83 (4) ◽  
pp. 1995-2002 ◽  
Author(s):  
S. I. Castañeda ◽  
F. Rueda ◽  
R. Dı́az ◽  
J. M. Ripalda ◽  
I. Montero

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