Abstract
Thermochromic material coating on windows or thermochromic paints on building reflects the solar radiation, especially the infrared regime and transmit visible radiation regime. This enables to use thermochromic material for smart window/building applications. This chapter introduces the physics of organic and inorganic thermochromic materials, their developments and applications for maintaining building temperature naturally, with reducing electricity usage. We have reviewed different methods utilized recently to develop thermochromic paints or thin films on plastic or glass windows. Thermochromic smart coating on glass or plastic substrates are designed as an intelligent system that can actively adjust transmission/reflection of sun light by coordinating its phase transition with building’s lighting and temperature in order to maintain the environment desired by a building occupant while minimizing energy loss.
