Abstract:
Embodiments of the invention provide processes to selectively form a cobalt layer on a copper surface over exposed dielectric surfaces. Embodiments described herein control selectivity of deposition by preventing damage to the dielectric surface, repairing damage to the dielectric surface, such as damage which can occur during the cobalt deposition process, and controlling deposition parameters for the cobalt layer.
Abstract:
A method for repairing and lowering the dielectric constant of low-k dielectric layers used in semiconductor fabrication is provided. In one implementation, a method of repairing a damaged low-k dielectric layer comprising exposing the porous low-k dielectric layer to a vinyl silane containing compound and optionally exposing the porous low-k dielectric layer to an ultraviolet (UV) cure process.
Abstract:
Semiconductor processing systems and methods for increased etch selectivity and rate are provided. Methods include etching a target material of a semiconductor substrate by flowing one or more plasma precursors through a microwave applicator into a remote plasma region of a semiconductor processing chamber. Generating a remote plasma within the remote plasma region at a microwave frequency, where the generated remote plasma comprises a density of greater than 1×1010 per cm3, an ion energy of less than or about 50 eV, or a combination thereof. Flowing the plasma effluents into a processing region of the semiconductor processing chamber. The microwave applicator includes a resonator body and a plate, where the resonator body is formed from or coated with a first dielectric material and the plate is formed from or coated with a second dielectric material.
Abstract:
Embodiments include a method of processing a substrate. In an embodiment, the method comprises flowing one or more source gasses into a processing chamber, and inducing a plasma from the source gases with a plasma source that is operated in a first mode. In an embodiment, the method may further comprise biasing the substrate with a DC power source that is operated in a second mode. In an embodiment, the method may further comprise depositing a film on the substrate.
Abstract:
Methods of depositing a film by atomic layer deposition are described. The methods comprise exposing a substrate surface to a first process condition comprising a first reactive gas and a second reactive gas and exposing the substrate surface to a second process condition comprising the second reactive gas. The first process condition comprises less than a full amount of the second reactive gas for a CVD process.
Abstract:
A plasma treatment chamber comprises a chamber body having an opening in a top surface thereof. A rotatable pedestal is within the chamber body having a support surface to hold and rotate a workpiece in a processing region. A cross-flow pumping ring is over the opening in the chamber body to inject a gas flow in a direction generally parallel to and across a surface of the workpiece. A lid is over the cross-flow pumping ring, the lid having a plurality of microwave resonators to ignite the gas flow and form plasma.
Abstract:
Embodiments herein include void-free material depositions on a substrate (e.g., in a void-free trench-filled (VFTF) component) obtained using directional etching to remove predetermined portions of a seed layer covering the substrate. In several embodiments, directional etching followed by selective deposition can enable fill material (e.g., metal) patterning in tight spaces without any voids or seams. Void-free material depositions may be used in a variety of semiconductor devices, such as transistors, dual work function stacks, dynamic random-access memory (DRAM), non-volatile memory, and the like.
Abstract:
Method for selectively oxidizing the dielectric surface of a substrate surface comprising a dielectric surface and a metal surface are discussed. Method for cleaning a substrate surface comprising a dielectric surface and a metal surface are also discussed. The disclosed methods oxidize the dielectric surface and/or clean the substrate surface using a plasma generated from hydrogen gas and oxygen gas. The disclosed method may be performed in a single step without the use of separate competing oxidation and reduction reactions. The disclosed methods may be performed at a constant temperature and/or within a single processing chamber.
Abstract:
Embodiments include a gas distribution assembly for a semiconductor processing chamber. In an embodiment, the gas distribution assembly comprises a flow ratio controller (FRC). In an embodiment, a first line from the FRC goes to an ampoule, and a second line from the FRC goes to a main line. In an embodiment, a third line from the ampoule goes to the main line. In an embodiment, a mass flow meter is coupled to the main line.
Abstract:
A microelectronic device on a semiconductor substrate comprises: a gate electrode; and a spacer adjacent to the gate electrode, the spacer comprising: a the low-k dielectric film comprising one or more species of vanadium oxide, which is optionally doped, and an optional silicon nitride or oxide film. Methods comprise depositing a low-k dielectric film optionally sandwiched by a silicon nitride or oxide film to form a spacer adjacent to a gate electrode of a microelectronic device on a semiconductor substrate, wherein the low-k dielectric film comprises a vanadium-containing film.