Cabot Corporation

Allen B Schult

Mark J Hampden-Smith

Toivo T Kodas

Klaus Kunze

Karel Vanheusden

Aaron Stump

Paolina Atanassova

Hugh Denham

James F Caruso

Scott T Haubrich

Mark H Kowalski

Chuck Edwards

Anthony R James

Hyungrak Kim

Nathan E Stott

Hyungrak Kiim

Andrew M Argo

Aaron D Stump

A composition for the fabrication of reflective features using a direct-write tool is disclosed. The composition comprises metal nanoparticles having an average particle size less than 300 nm and which carry thereon a polymer for substantially preventing agglomeration of the nanoparticles, wherein the nanoparticles exhibit a metal-polymer weight ratio of 100:1 to 10:1. The composition further includes a vehicle for forming a dispersion with the metal nanoparticles. A number of electronic devices comprising a reflective layer formed from the composition are also disclosed. One example case provides an electronic device having a reflective electrode. The reflective electrode comprises a percolation network of the metal nanoparticles embedded in a matrix of the polymer and having an average particle size of less than 300 nm, wherein the reflective electrode is reflective in the visible light range and does not diffract incident light.

Metal nanoparticle compositions for reflective features

Processes for the production of metal nanoparticles. In one aspect, the invention is to a process comprising the steps of mixing a heated first solution comprising a base and/or a reducing agent (e.g., a non-polyol reducing agent), a polyol, and a polymer of vinyl pyrrolidone with a second solution comprising a metal precursor that is capable of being reduced to a metal by the polyol. In another aspect, the invention is to a process that includes the steps of heating a powder of a polymer of vinyl pyrrolidone; forming a first solution comprising the powder and a polyol; and mixing the first solution with a second solution comprising a metal precursor capable of being reduced to a metal by the polyol.

Production of metal nanoparticles

A metal nanoparticle composition for the fabrication of conductive features. The metal nanoparticle composition advantageously has a low viscosity permitting deposition of the composition by direct-write tools. The metal nanoparticle composition advantageously also has a low conversion temperature, permitting its deposition and conversion to an electrical feature on polymeric substrates.

Metal nanoparticle compositions

A process for the production of metal nanoparticles. The process comprises a rapid mixing of a solution of at least about 0.1 mole of a metal compound that is capable of being reduced to a metal by a polyol with a heated solution of a polyol and a substance that is capable of being adsorbed on the nanoparticles.

Precursor compositions in the form of a tape that can be transferred to a substrate and converted to an electronic feature at a relatively low temperature, such as not greater than about 200&#xb0; C. The tape composition can be disposed on a carrier to form a ribbon structure that is flexible and can be handled in a variety of industrial processes.

Method for the fabrication of conductive electronic features

A precursor composition for the deposition and formation of an electrical feature such as a conductive feature. The precursor composition advantageously has a low viscosity enabling deposition using direct-write tools. The precursor composition also has a low conversion temperature, enabling the deposition and conversion to an electrical feature on low temperature substrates. A particularly preferred precursor composition includes silver metal for the formation of highly conductive silver features.

Low viscosity precursor compositions and methods for the deposition of conductive electronic features

A precursor composition for the deposition and formation of an electrical feature such as a conductive feature. The precursor composition advantageously has a low viscosity enabling deposition using direct-write tools. The precursor composition also has a low conversion temperature, enabling the deposition and conversion to an electrical feature on low temperature substrates. A particularly preferred precursor composition includes copper metal for the formation of highly conductive copper features.

Methods for the deposition of conductive electronic features

A process for the production of metal nanoparticles. Nanoparticles are formed by combining a metal compound with a solution that comprises a polyol and a substance that is capable of being adsorbed on the nanoparticles. The nanoparticles are precipitated by adding a nanoparticle-precipitating liquid in a sufficient amount to precipitate at least a substantial portion of the nanoparticles and of a protic solvent in a sufficient amount to improve the separation of the nanoparticles from the liquid phase.

Separation of metal nanoparticles

Precursor compositions for the fabrication of electronic features such as resistors and capacitors. The precursor compositions are formulated to have a low conversion temperature, such as not greater than about 350&#xb0; C., thereby enabling the fabrication of such electronic features on a variety of substrates, including organic substrates such as polymer substrates.

Method for fabricating an inorganic resistor

Precursor compositions for the deposition of electronic features such as resistors and dielectric components and methods for the deposition of the precursor compositions. The precursor compositions have a low viscosity, such as not greater than about 1000 centipoise and can be deposited using a direct-write tool. The precursors also have a low conversion temperature, enabling the formation of electronic features on a wide variety of substrates, including low temperature substrates.

Precursor compositions and methods for the deposition of passive electrical components on a substrate

A precursor composition for the deposition and formation of an electrical feature such as a conductive feature. The precursor composition advantageously has a viscosity of at least about 1000 centipoise and can be deposited by screen printing. The precursor composition also has a low conversion temperature, enabling the deposition and conversion to an electrical feature on low temperature substrates. A particularly preferred precursor composition includes silver and/or copper metal for the formation of highly conductive features.

Growing community of inventors

Albuquerque, NM, United States of America

Allen B Schult