Papers by Keyword: Low-Emissivity Coating

Abstract: The low-emissivity (low-e) coatings consisting of glass/ZnO/Ag were prepared and the microstructures of Ag thin films were investigated as a function of oxygen gas pressure during the ZnO underlayer deposition. It was found from X-ray diffraction measurement that the Ag thin films exhibited well-crystallization and (111)-preferred orientation when the ZnO underlayers were deposited in low oxygen gas pressure. Furthermore, glancing X-ray reflectivity measurement revealed that the surface roughness of Ag thin films decreased with decreasing oxygen gas pressure during the ZnO deposition. It can be said from these results that the highly crystallized and smooth Ag thin films grew on the ZnO thin films deposited in low oxygen gas pressure. Besides, it can be considered that the Ag thin films were heteroepitaxially grown using the smooth and highly crystallized ZnO underlayers which can be obtained under low oxygen gas pressure; as a result, the microstructures of Ag thin films should be improved.

Abstract: Glasses reflective in the spectral range of long-wave infrared radiation operate as heat mirrors. These glasses have found wide applications in architecture. Special thin film coatings on glass panes reflect long wave infrared radiation back to building interiors. The reflective thin films limit absorption of infrared radiation within the glass pane and reduce radiation heat losses of glazings. Heat losses of windows could be significantly limited with the coated glasses which are called low-emissivity glazings. The study of materials convenient for infrared reflective coatings, the optimal composition of thin films and their thicknesses is the main topic of the presented paper. The study is based on measurements of spectral characteristics of selected glasses and computer simulations of the thin film composition for applications of window infrared reflective coatings.