Single layers or layer stacks with a thickness between 1 and 1000 nm that are deposited on surfaces using the PVD technology are called layer systems. They are characterized by such functional properties as electrical (conductivity), optical (transparency, absorption), mechanical (wear resistance) and chemical (diffusion barriers) features.
Solar control coatings reduce the radiation of the incoming sunlight in buildings. Titanium, stainless steel or chrome are deposited in such a way that reflection and absorption of the glazing are increased. Solar control coatings can be used for multiple or single-sheet glazings. These coating systems were the first ones to be deposited on glass by vacuum technology. Due to rising demands in climate protection, today, they are mostly used only in combination with heat insulation coatings in multiple glazings and are increasingly replaced by a combination of coating systems (LowE-Sun).
Heat insulation coatings (LowE) are characterized by low emission of heat and contain an additional thin silver layer. This type of coating system allows for a large intake of solar energy and daylight, though almost completely prevents heat loss through the glass surface. It is used for multiple glazing.
Solar protection coatings (Double LowE) combine the heat insulating properties of LowE coatings with the light reflecting features of solar control coatings. Today, these double silver coatings are considered the standard system for modern glass architecture for office buildings in all climate areas of the world.
Ever more sun protection requirements for glass coatings in combination with architectural demands are leading to more and more triple silver coating applications (Triple LowE), that fulfill the highest environmental and aesthetical standards.
