I've tried to prepare a thin film of tungsten oxide nanoparticles on glass plate with the help of following methods-
1. Nanoparticles were dispersed in Poly-ethylene glycol (PEG) and the dispersion was spin-coated on the glass plates. But after spin-coating, it got shrunk before placing the glass plates on hot plate.
2. As the next effort, to improve the adhesion, I dipped the glass plates in the silane and after drying, repeated the step 1. However, same problem observed again.
3. Further I mixed the PEG-WO3 dispersion in ethanol (1:9), and the glass plates were spin coated with this solution. However, once again no yield.
Can anyone suggest me a better way to achieve a uniform thin film of WO3 on the glass plates?
One option might be sedimentation through slow evaporation of the dispersing solvent. Another might be through Langmuir film methods. A search shows the latter method has been published and also yields at least two patents for methods to deposit tungsten oxide coatings on glass.
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