Dip-Coating Process Engineering and Performance Optimization for Three-State Electrochromic Devices

Titanium dioxide (TiO 2 ) nanoparticles were modified onto fluorine-doped tin oxide (FTO) via dip-coating technique with different nanoparticle sizes, lifting speeds, precursor concentrations, and dipping numbers. Electrodeposition-based electrochromic device with reversible three-state optical tran...

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Bibliographic Details
Published in:Nanoscale research letters 2017-06, Vol.12 (1), p.390-390, Article 390
Main Authors: Wu, Lu, Yang, Dejiang, Fei, Lixun, Huang, Yue, Wu, Fang, Sun, Yiling, Shi, Jiayuan, Xiang, Yong
Format: Article
Language:English
Subjects:
Bleaching
Chemistry and Materials Science
Coated electrodes
Coating processes
Coloration
Cycles
Devices
Dip coatings
Dip-coating process engineering
Electrochromism
Electrodeposition
Electrodes
Fluorine
Genetic transformation
Immersion coating
Materials Science
Molecular Medicine
Nano Express
Nanochemistry
Nanoparticles
Nanoscale Science and Technology
Nanotechnology
Nanotechnology and Microengineering
Optical performance
Process engineering
Stability
Switching
Thickness
Thin films
Tin
Tin oxide
Titanium dioxide
Titanium dioxide nanoparticle
Titanium nitride
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Summary:Titanium dioxide (TiO 2 ) nanoparticles were modified onto fluorine-doped tin oxide (FTO) via dip-coating technique with different nanoparticle sizes, lifting speeds, precursor concentrations, and dipping numbers. Electrodeposition-based electrochromic device with reversible three-state optical transformation (transparent, mirror, and black) was fabricated subsequently by sandwiching a suitable amount of gel electrolyte between modified FTO electrode and flat FTO electrode. Correlation between dip-coating process engineering, morphological features of TiO 2 thin films, i.e., thickness and roughness, as well as performance of electrochromic devices, i.e., optical contrast, switching time, and cycling stability, were investigated. The modified device exhibits high optical contrast of 57%, the short coloration/bleaching switching time of 6 and 20 s, and excellent cycling stability after 1500 cycles of only 27% decrement rate by adjusting dip-coating processes engineering. The results in this study will provide valuable guidance for rational design of the electrochromic device with satisfactory performance.
ISSN:1931-7573
1556-276X
DOI:10.1186/s11671-017-2163-0