Preparation of an Al2O3—EVA Co-film and its Thermal Conductivity

To decrease the working temperature of the photovoltaic (PV) module in a solar PV system, an elastic co-film with excellent mechanical properties and adhesiveness, as well as high thermal conductivity, was fabricated based on the composition of a thermal-conductive alumina and ethylene vinyl acetate (EVA) polymer. The thermal conductivity of co-films with various particle sizes, dosage, surface properties, etc. of alumina was investigated by the laser scattering method. The scanning electron microscopic results showed that the co-film with 80 shares of submicron alumina in EVA polymer had a good interface binding. The thermal-conductive mechanism of the co-film was likewise discussed.