Electrically conductive transparent doped tin oxide films
AssigneeNyacol Products, Inc.
InventorThomas F. Swank
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Abstract
Disclosed is a novel system for providing transparent electrically conductive tin oxide coatings on substrates, which system includes the steps of doping a tin oxide colloid stabilized with ammonium ions with antimony, coating the resulting mixture onto the substrate to be provided with the electrically conductive coating, and then drying or baking for a time and at a temperature to lower the sheet resistance of the coating to the desired level. In an alternate embodiment, the coating is dried to lower the sheet resistance to provide an anti-static coating.
Claims1
A transparent substrate having a transparent anti-static coating prepared by the method consisting essentially of the steps of:
- coating onto the substrate a layer of tin oxide colloid stabilized with ammonium ions, which colloid has been doped with antimony;
- and
- thereafter drying the coated substrate to provide an anti-static coating consisting of tin oxide stabilized with ammonium ions and doped with antimony, the coating having a sheet resistance no greater than about 10.sup.8 ohms.
Dependencies are inferred from the claim text.