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US 6,306,747 B1Granted
Conductive metal oxide based layer
AssigneeAgfa-Gevaert
InventorsHieronymus Andriessen, Steven Lezy
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Abstract
A conductive metal oxide based layer on a substrate is prepared by chemically reducing a metal salt in aqueous solution, coating the resulting aqueous metal dispersion after washing onto a substrate, preferably glass, and subjecting the coated layer to an oxidizing treatment, e.g. a heat step. In a preferred embodiment the metal oxide is tin oxide, or a mixture of tin oxide and another metal oxide.
Claims12
A process for the preparation of a conductive metal oxide based layer on a substrate comprising the following steps, in order:
- (a) preparing an aqueous medium containing at least one type of metal salt,
- (b) chemically reducing said metal salt by a reducing agent to form a dispersion of metal particles,
- (c) washing said dispersion of metal particles,
- (d) coating said washed dispersion onto a substrate, thereby obtaining a coated layer containing metal particles,
- (e) subjecting said coated layer to an oxidizing treatment to form a conductive layer containing metal oxide particles.
2 more elements
Dependencies are inferred from the claim text.