Inquiring Tungsten Trioxide Thin Film Translucent

The proportion of the fabric sunlight penetrating, such as membrane light transmittance are 10-15%, which indicates that 10-15% of the sun can penetrate tensioned membrane, so that the building can save energy in the daytime without lighting. Reflection with the surface quality-related and coefficient scattering are the main factors. The density, grain boundaries and impurities are the main scattering. In the further non-ceramic cubic system, the presence of birefringence grain texture can be improved light transmittance.

The tungsten trioxide thin film prepared by the sol - gel method , which shows its light transmittance is maximum and the corresponding wavelengths are 85.3%, 556nm; the peaks are and troughs are in the 350 ~ 600nm, the difference of the light transmittance at the peaks and valleys is 4.4%. WGZ-8 UV-V double beam of the incident light wavelength are 200 ~ 800nm, a light transmittance is 0% to 150% in spectrophotometer transmittance analysis.

And the use of magnetron sputtering method to prepare tungsten trioxide is different from the above, its maximum transmission rate and the corresponding wavelength ranges are: 90.1%, 572 ~ 582nm; peaks and troughs are 350 ~ 650nm, the difference between the peaks and troughs of the light transmittance is 21.2%. Comparison of the two lines shows that the difference between the two methods for preparing tungsten trioxide thin films is unlikely in the light transmittance. Thin films can be prepared by magnetron sputtering when the temperature at 450 ℃, the transmittance of the thin film is dropped by 8%. When the annealing temperature is 500 ℃, the transmittance of the thin film dropped by 8%, the peak position and peak shape are changed much.