Liquid coating composition for producing high quality, high performance fluorine-doped tin oxide coatings.

The present invention relates to a liquid coating composition for making high quality fluorine-added tin oxide coatings, which have a low sheet resistance and a high transmission to visible light, characterized in that it comprises: a) 1 to 30 percent by weight of an organic fluorine addition compound, which is selected from trifluoroacetic acid, trifluoroacetic anhydride, trifluoroacetic anhydride, ethyl trifluoroacetate, trifluoroethanol, ethyl trifluoroacetate or pentafluoropropionic acid; and b) from 70 to 99 percent by weight of an organotin compound, which is selected from an alkyl tin trichloride, a dialkyl tin dichloride, a dialkylcyclotane tin acetate, a dialkylchloro tin diacetate, a tin trichloride ester or tin tetrachloride . A method for producing a high quality fluorine-added tin oxide coating, which has a low sheet resistance and a high transmission of visible light, comprising: a) forming a liquid coating composition of i) 1-30 percent by weight of an organic fluorine additive compound, which is selected from trifluoroacetic acid, and ii) 70 to 99 percent by weight of an organotin compound that it is selected from an alkyl tin trichloride, a dialkyl tin dichloride, an alkyl dichloro tin acetate, a dialkylchloro tin diacetate, an ester of tin trichloride or tin tetrachloride b) evaporating said liquid composition at 100-400 degrees C, and c) contacting said vapor in an atmosphere containing oxygen, with a substrate maintained at a temperature greater than 400 degrees, and below 700 degrees C, said deposition being carried out for 45 seconds or less, to produce a coating having a thickness of 160-220 nm, a sheet resistance of less than 40 ohms / 9.29 square meters, an infrared reflectivity of more than 70 percent and a visible light transmission of at least 80 percent.