Electrochromic properties of nanostructured tungsten oxide films prepared by surfactant-assisted sol-gel process

Ching Lin Wu, Chun Kai Wang, Chung Kwei Lin, Sheng Chang Wang, Jow Lay Huang

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Pristine and surfactant F-127 added tungsten oxide films have been prepared successfully by sol-gel method using PTA as the precursor sol. After annealing at 300°C, amorphous WO3 films with or without F-127 additions were prepared. The F-127-added tungsten oxide films exhibit porous microstructure, which are affected by the amount of F-127 addition. Nanosized microstructure with pore size less than 10nm can be observed with small amount of F-127 addition (less than 0.06g/ml) , where as larger spherical or tubular pores are found with superfluous F-127 addition (higher than 0.08g/ml). Not only the transmittance modulation but also the coloration efficiency can be improved by adding surfactant F-127. Tungsten oxide film with 0.10g/mlF-127 addition exhibits the best electrochromic performance with a transmittance modulation of 67.6% and a coloration efficiency of 38.3cm2C-1.

Original languageEnglish
Pages (from-to)403-407
Number of pages5
JournalSurface and Coatings Technology
Volume231
DOIs
Publication statusPublished - Sep 25 2013

Fingerprint

tungsten oxides
sol-gel processes
Surface-Active Agents
Sol-gel process
Oxide films
Tungsten
oxide films
Surface active agents
surfactants
Modulation
Microstructure
Polymethyl Methacrylate
Amorphous films
Sols
transmittance
Pore size
porosity
color
modulation
microstructure

Keywords

  • Electrochromism
  • Nanostructured films
  • Sol-gel method
  • Tungsten oxide films

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Electrochromic properties of nanostructured tungsten oxide films prepared by surfactant-assisted sol-gel process. / Wu, Ching Lin; Wang, Chun Kai; Lin, Chung Kwei; Wang, Sheng Chang; Huang, Jow Lay.

In: Surface and Coatings Technology, Vol. 231, 25.09.2013, p. 403-407.

Research output: Contribution to journalArticle

Wu, Ching Lin ; Wang, Chun Kai ; Lin, Chung Kwei ; Wang, Sheng Chang ; Huang, Jow Lay. / Electrochromic properties of nanostructured tungsten oxide films prepared by surfactant-assisted sol-gel process. In: Surface and Coatings Technology. 2013 ; Vol. 231. pp. 403-407.
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AU - Huang, Jow Lay

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N2 - Pristine and surfactant F-127 added tungsten oxide films have been prepared successfully by sol-gel method using PTA as the precursor sol. After annealing at 300°C, amorphous WO3 films with or without F-127 additions were prepared. The F-127-added tungsten oxide films exhibit porous microstructure, which are affected by the amount of F-127 addition. Nanosized microstructure with pore size less than 10nm can be observed with small amount of F-127 addition (less than 0.06g/ml) , where as larger spherical or tubular pores are found with superfluous F-127 addition (higher than 0.08g/ml). Not only the transmittance modulation but also the coloration efficiency can be improved by adding surfactant F-127. Tungsten oxide film with 0.10g/mlF-127 addition exhibits the best electrochromic performance with a transmittance modulation of 67.6% and a coloration efficiency of 38.3cm2C-1.

AB - Pristine and surfactant F-127 added tungsten oxide films have been prepared successfully by sol-gel method using PTA as the precursor sol. After annealing at 300°C, amorphous WO3 films with or without F-127 additions were prepared. The F-127-added tungsten oxide films exhibit porous microstructure, which are affected by the amount of F-127 addition. Nanosized microstructure with pore size less than 10nm can be observed with small amount of F-127 addition (less than 0.06g/ml) , where as larger spherical or tubular pores are found with superfluous F-127 addition (higher than 0.08g/ml). Not only the transmittance modulation but also the coloration efficiency can be improved by adding surfactant F-127. Tungsten oxide film with 0.10g/mlF-127 addition exhibits the best electrochromic performance with a transmittance modulation of 67.6% and a coloration efficiency of 38.3cm2C-1.

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