TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Materials: The stannic acid is obtained by dissolving in water, a hydroxide obtained by hydrolysis of at least one tin compound from tin halides, organotin halides, tin acid salts and tin-containing esters (especially tin chloride).Preferred Solution: The content of (A) is 0.1-5 wt.%. The pH is at least 10. At least one from water-soluble compounds of antimony, bismuth and niobium is also included as a dopant.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Materials: (A) is at least one compound selected from polyvinylalcohol (PVA), polyvinylacetamide, polyvinylformamide, polydimethylacrylamide, polyacrylamide, polyacrylmorpholine, hydroxyethylcellulose, hydroxypropylcellulose and carboxymethylcellulose.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Materials: (C) is at least one compound selected from tetramethylammonium hydroxide, triethylamine, diethylamine, trimethylamine and dimethylamine.Preferred Solution: A fluorine-containing water-soluble organic compound is also included as a dopant. EXAMPLE - 7.0 g tin tetrachloride pentahydrate (SnCl4.5H2O) and 0.32 g antimony trichloride (SbCl3) were dissolved in 35 g water. Hydrochloric acid (HCl) added to give pH 0.5. The mixture was stirred to completely dissolve the SbCl3, aqueous ammonia was added to give pH 8, and the obtained precipitate filtered and washed. To this was added 9 times wt. distilled water, then 25% aqueous ammonia was added to give pH 10.8. The mixture was left for 24 h, to give a pale yellow-brown transparent solution, 0.41 g PVA added, and stirred, to give a viscous coating solution. This was dip-coated onto a silica (SiO2)-coated glass plate at 5 cm/min, dried at 100 degreesC for 30 min, and baked at 600 degreesC for 1 h, to give a 290 nm thick transparent, conductive tin oxide film. The film had 3.73 x 10 to the power -3 ohm. cm specific resistance, 93% transparency and excellent quality, compared to 3.55 x 10 to the power -2 ohm. cm, 89% and average, respectively, for a comparative example prepared without a water-soluble polymer.