ITO is a kind of metal compound with good transparent and conductive properties. It is widely used in flat panel display devices, solar cells, special function window coating and other photoelectric devices due to its characteristics of bandgap, high light transmittance in visible spectrum and low resistivity.

ITO conductive film glass is made by magnetron sputtering with indium tin oxide (ITO) film on the basis of sodium calcium or silicon boron based glass. A large area solar cell roof is made of transparent ITO conductive glass. All energy consumption of the building is supplied by solar cells on the roof. Solar glass (ITO coated glass) plays an important role. No matter ITO - nip type, ITO - pin type, Schottky type or heterostructure type, ITO is coated with a layer of ITO as antireflection layer and transparent electrode. This solar glass roof building has been known as a clean ecological environment building.