Materials Chemistry and Optical Properties of Transparent Thin Films for Solar Energy Utilization
The science and technology of transparent conductors is discussed in the context of energy applications covering architectural energy-efficient windows, photothermal conversion, and photovoltaics. The overall emphasis is on architectural glazing coatings. Optical properties of heat mirrors are predicted using the Drude theory of metals. Single layer transparent conductors of aoped SnO2, In2O3:Sn, and Cd2SnO4 are discussed. Detailed materials chemistry is given for spray hydrolysis of Sn02:F coatings. Multilayer metal/dielectric heat mirrors are covered including basic solar optical properties of metal films. An example system of Al2O3/Ag/polyester heat mirror is also detailed.