Abstract:
A method for electroplating a gate metal (9) or other conducting or semiconducting material on a gate dielectric (2) is provided. The method involves selecting a substrate (3, 4), dielectric layer, and electrolyte solution or melt, wherein the combination of the substrate, dielectric layer, and electrolyte solution or melt allow an electrochemical current to be generated at an interface between the dielectric layer and the electrolyte solution or melt.
Abstract:
A method of reducing the loss of elements of a photovoltaic thin film structure during an annealing process, includes depositing a thin film on a substrate, wherein the thin film includes a single chemical element or a chemical compound, coating the thin film with a protective layer to form a coated thin film structure, wherein the protective layer prevents part of the single chemical element or part of the chemical compound from escaping during an annealing process, and annealing the coated thin film structure to form a coated photovoltaic thin film structure, wherein the coated photovoltaic thin film retains the part of the single chemical element or the part of the chemical compound that is prevented from escaping during the annealing by the protective layer..
Abstract:
Solutions and processes for electrodepositing gallium or gallium alloys includes a plating bath free of complexing agents including a gallium salt, an indium salt, a combination thereof, and a combination of any of the preceding salts with copper, an acid, and a solvent, wherein the pH of the solution is in a range selected from the group consisting of from about zero to about 2.6 and greater than about 12.6 to about 14. An optional metalloid may be included in the solution.
Abstract:
A micro-electromechanical switch (MEMS) having a deformable elastomeric element (1) which exhibits a large change in conductivity with a small amount of displacement. The deformable elastomeric element (1) is displaced by an electrostatic force that is applied laterally resulting in a small transverse displacement. The transversal displacement, in turn, pushes a metallic contact (7) against two conductive paths (5, 6), allowing passage of electrical signals. The elastomer (1) is provided on two opposing sids with embedded metallic elements (9, 10), such as impregnated metallic rods, metallic sheets, metallic particles, or conductive paste. Actuation electrodes (18, 8) are placed parallel to the conductive sides of the elastomer. A voltage applied between the conductive side of the elastomer and the respective actuation electrodes (18, 8) generate the electrostatic attractive force that compresses the elastomer (1), creating the transverse displacement that closes the MEMS. The elastomeric based MEMS extends the lifetime of the switch by extending fatigue life of the deformable switch elements.
Abstract:
A method and apparatus are described for performing both electroplating of a metal layer and CMP planarization of the layer on a substrate. The apparatus includes a table (10) supporting a polishing pad (20); the table and pad have a plurality of holes (210, 220) forming channels for dispensing an electroplating solution onto the pad. Electroplating anodes (201, 202, 203) are disposed in the channels and in contact with the electroplating solution. A carrier (12) holds the substrate (1) substantially parallel to the top surface of the pad (20) and applies variable mechanical force on the substrate against the pad, so that the spacing between substrate and pad may be less during electroplating than during electroetching.