Influence Of Heat Treatment In Sulfur Atmosphere On Transmittance Of Solar Glass Antireflective Coating

In order to achieve the high strength of the solar glass coated antireflective filmthat can enhance the transmittance, antireflective coating solar glass need to betempered in the sulfur atmosphere protected the glass surface. So, solar glass coatedantireflective film could be affected in the process of toughed into the sulfuratmosphere. In order to make the solar glass has the double performance of highstrength and high transmittance, we need to find out influnce and mechanism of heattreatment in sulfur atmosphere on transmittance of solar glass coated antireflection.Therefore, transmittance of antireflection coating solar glass was studied.Effect of heat treatment in SO2containing atmosphere on solar glasstransmittance was studied. It shows that the solar glass transmittance is increasedafter heat treatment in SO2containing atmosphere. Reflectance spectra of solar glasssurface was determined by UV-VIS spectrophotometer. Surface and fracture surfacemorphologys were observed by FESEM. Vertical component distribution in solarglass was measured by EPMA. The action mechanism of transmittance increased withheat treatment in SO2containing atmosphere because of forming a porous SiO2layeron solar glass surface was reveled.Influence of heat treatment in sulfur atmosphere on transmittance ofantireflective coated solar glass was studied, and the results show that lighttransmittance of the sample is closely related with sulfur content in sulfideatmosphere and heat treating time. Further, by testing the reflection spectrum, surfacetopography, section morphology, section composition and vertical sulfur distributionof corresponding samples, the principle of elemental sulfur in suflur atmosphereadsorhtion to antireflection coating surface could delay sintering densification ofcoating surface and also could left a channel for intenal heat transfer so as to formporous structure because the inner of coating quickly sintered was cleared anddifinated.Transmittance of solar glass antireflection with conditions of humidity and temperature of environment was studied. Transmittance spectrum of glass coated anantireflection film was measured by UV-3600, and the structure of antireflectivecoating was tested by FT-IR and Raman spectroscopy. The result shows thattransmittance of solar glass antireflective coating was increased by free water andreduced by combined water.