The patent's assignee for patent application serial number 365001 is
News editors obtained the following quote from the background information supplied by the inventors: "The present disclosure relates to compositions and processes for depositing and forming palladium layers on various substrates. The compositions may be flowable solutions or pastes, for example, and used to coat and/or print objects such as electronic devices or components thereof by solution deposition processes including spin coating, dip coating, screen printing, and inkjet printing.
"Palladium (Pd) is a rare metal with many unique properties, resulting in its widespread use. For example, palladium is used in catalytic converters of automobiles to convert combustion byproducts into less harmful substances. Palladium is also used in many electronics devices, ceramic capacitors, fuel cells, and so on. Palladium layers/structures are conventionally formed in such devices by electroplating, sputtering, or chemical vapor deposition (CVD).
"It would be desirable to use lower-cost approaches to form palladium structures. For example, there is a need for solution-processable compositions that can be used for palladium deposition."
As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventors' summary information for this patent application: "Disclosed is a composition comprising palladium nanoparticles that may be used to form palladium layers and/or structures on a variety of substrates and methods for forming the same. These compositions are useful for coating and printing substrates, such as in a pattern to form a palladium layer, and can be used for fabricating electronically conductive elements, pathways, and/or circuits of electronic devices. The resulting palladium layers and/or structures are substantially uniform and exhibit high conductivity and good adhesion.
"A process for forming a composition comprising palladium nanoparticles includes warming a first composition comprising at least one palladium salt and at least one unsaturated carboxylic acid to form a second composition comprising stable palladium nanoparticles and at least one palladium unsaturated carboxylate, wherein the first composition is substantially free of an additional reducing agent.
"Also, a composition comprising at least one palladium unsaturated carboxylate and stable palladium nanoparticles is described, which is formed by a process including warming a first composition to form a second composition comprising the at least one palladium unsaturated carboxylate and stable palladium nanoparticles, wherein the first composition is substantially free of an additional reducing agent.
"A method for forming a palladium layer on a substrate is also described, the method warming a first composition comprising at least one palladium salt and at least one unsaturated carboxylic acid to form a second composition comprising stable palladium nanoparticles and at least one palladium unsaturated carboxylate, wherein the first composition is substantially free of an additional reducing agent; solution depositing the second composition upon the substrate; and heating the second composition on the substrate to form the palladium layer.
"Also, a palladium layer is described. The palladium layer is formed from a composition comprising both palladium nanoparticles and palladium unsaturated carboxylate. The palladium layer has a conductivity at least 1000 S/cm. The palladium layer has a surface roughness less than 10 nm.
BRIEF DESCRIPTION OF THE DRAWINGS
"The following is a brief description of the drawings, which are presented for the purposes of illustrating an example embodiment disclosed herein.
"FIG. 1 is a schematic diagram showing the process of coating a substrate, for example, a wire, according to the present disclosure.
"FIG. 2 is a picture of palladium film prepared according to the present disclosure compared with a palladium saturated carboxylate without palladium nanoparticles."
For additional information on this patent application, see: Wu, Yiliang. Composition of Palladium Unsaturated Carboxylate and Palladium Nanoparticles. U.S. Patent Application Serial Number 365001, filed
Keywords for this news article include: Palladium, Heavy Metals, Nanoparticle, Nanotechnology, Reducing Agents,
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