Transparent and infrared-reflecting indium-tin-oxide films: quantitative modeling of the optical properties

The theoretical model for the radiative performance of heavily n-doped semiconductors embraces the combined effects of valence electrons, free electrons, and polar optical phonons. Applied to In-Sn-O films, the model computes integrated luminous, solar, and thermal properties. Optimization of film thickness and electron density yields single uniform coatings on glass with 78% normal solar transmittance and 20% hemispherical thermal emittance.