Abstract
Solar control characteristics are described for chemically deposited thin film coatings consisting of an initial layer of
film of ∼0.05 μm thickness deposited at room temperature (25°C) for 45–75 min from baths containing bismuth nitrate, triethanolamine (TEA) and thioacetamide and a 
thin film of 0.1–0.25 μm thickness deposited either at room temperature, for 3–6 h, or at 50°C, for 1–2 h using baths consisting of copper(II) chloride, TEA, thioureau (TU), 
and
. Air annealing of these films at 150°C for 30 min yield well‐desired solar control characteristics: sheet resistance of 30‐60 Ω/□ which signifies a low thermal emittance; integrated transmittance of 15–32% in the visible region and 11–22% in the near‐infrared region; integrated transmittance of ∼13–25% for solar radiation and a range of shades in reflected daylight. Using a mathematical model, the solar control performance of these coatings in a 6 mm sheet glass is predicted for an architectural window in a tropical location showing that solar radiation rejection of ∼50% is obtainable for a 
of 17%.