Patents by Inventor Ieva Narkeviciute

Ieva Narkeviciute has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240063015
    Abstract: A doped or undoped silicon carbide (SiCxOyNz) film can be deposited in one or more features of a substrate for gapfill. After a first thickness of the doped or undoped silicon carbide film is deposited in the one or more features, the doped or undoped silicon carbide film is exposed to a remote hydrogen plasma under conditions that cause a size of an opening near a top surface of each of the one or more features to increase, where the conditions can be controlled by controlling treatment time, treatment frequency, treatment power, and/or remote plasma gas composition. Operations of depositing additional thicknesses of silicon carbide film and performing a remote hydrogen plasma treatment are repeated to at least substantially fill the one or more features. Various time intervals between deposition and plasma treatment may be added to modulate gapfill performance.
    Type: Application
    Filed: November 3, 2023
    Publication date: February 22, 2024
    Inventors: Guangbi YUAN, Ieva NARKEVICIUTE, Bo GONG, Bhadri N. VARADARAJAN
  • Patent number: 11848199
    Abstract: A doped or undoped silicon carbide (SiCxOyNz) film can be deposited in one or more features of a substrate for gapfill. After a first thickness of the doped or undoped silicon carbide film is deposited in the one or more features, the doped or undoped silicon carbide film is exposed to a remote hydrogen plasma under conditions that cause a size of an opening near a top surface of each of the one or more features to increase, where the conditions can be controlled by controlling treatment time, treatment frequency, treatment power, and/or remote plasma gas composition. Operations of depositing additional thicknesses of silicon carbide film and performing a remote hydrogen plasma treatment are repeated to at least substantially fill the one or more features. Various time intervals between deposition and plasma treatment may be added to modulate gapfill performance.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: December 19, 2023
    Assignee: Lam Research Corporation
    Inventors: Guangbi Yuan, Ieva Narkeviciute, Bo Gong, Bhadri N. Varadarajan
  • Publication number: 20230245924
    Abstract: Graphene is selectively deposited on a metal layer relative to a dielectric layer of a semiconductor substrate. Dielectric material is selectively deposited on the dielectric layer relative to the metal layer of the semiconductor substrate. The graphene is a high-quality graphene film that serves as an inhibitor during deposition of the dielectric material. In some implementations, the dielectric material may be a metal oxide. In some implementations, the dielectric material may be a low-k dielectric material. The graphene remains throughout semiconductor integration processes. In some implementations, the graphene may be subsequently modified by to permit deposition on the surface of the graphene or the graphene may be subsequently removed.
    Type: Application
    Filed: June 17, 2021
    Publication date: August 3, 2023
    Inventors: Ieva NARKEVICIUTE, Bhadri N. VARADARAJAN, Kashish SHARMA
  • Publication number: 20220399230
    Abstract: Graphene is deposited on a metal surface of a semiconductor substrate at a deposition temperature compatible with back-end-of-line semiconductor processing. The graphene may be annealed at a temperature between the deposition temperature and a temperature sensitive limit of materials in the semiconductor substrate to improve film quality. Alternatively, the graphene may be treated by exposure to plasma with one or more oxidant species. The graphene may be encapsulated with an etch stop layer and hermetic barrier, where the etch stop layer includes a metal oxide deposited under conditions that do not change or that improve the film quality of the graphene. The graphene may be encapsulated with a hermetic barrier, where the hermetic barrier is deposited under conditions that do not damage the graphene.
    Type: Application
    Filed: February 18, 2021
    Publication date: December 15, 2022
    Inventors: Bhadri N. VARADARAJAN, Ieva NARKEVICIUTE, Kashish SHARMA
  • Publication number: 20220375722
    Abstract: Graphene is deposited on a metal surface of a substrate using a remote hydrogen plasma chemical vapor deposition technique. The graphene may be deposited at temperatures below 400 C, which is suitable for semiconductor processing applications. Hydrogen radicals are generated in a remote plasma source located upstream of a reaction chamber, and hydrocarbon precursors are flowed into the reaction chamber downstream from the remote plasma source. The hydrocarbon precursors are activated by the hydrogen radicals under conditions to deposit graphene on the metal surface of the substrate in the reaction chamber.
    Type: Application
    Filed: September 24, 2020
    Publication date: November 24, 2022
    Inventors: Bhadri N. VARADARAJAN, Ieva NARKEVICIUTE
  • Publication number: 20220238333
    Abstract: A doped or undoped silicon carbide (SiCxOyNz) film can be deposited in one or more features of a substrate for gapfill. After a first thickness of the doped or undoped silicon carbide film is deposited in the one or more features, the doped or undoped silicon carbide film is exposed to a remote hydrogen plasma under conditions that cause a size of an opening near a top surface of each of the one or more features to increase, where the conditions can be controlled by controlling treatment time, treatment frequency, treatment power, and/or remote plasma gas composition. Operations of depositing additional thicknesses of silicon carbide film and performing a remote hydrogen plasma treatment are repeated to at least substantially fill the one or more features. Various time intervals between deposition and plasma treatment may be added to modulate gapfill performance.
    Type: Application
    Filed: April 12, 2022
    Publication date: July 28, 2022
    Inventors: Guangbi YUAN, Ieva NARKEVICIUTE, Bo GONG, Bhadri N. VARADARAJAN
  • Publication number: 20220238334
    Abstract: A doped or undoped silicon carbide (SiCxOyNz) film can be deposited in one or more features of a substrate for gapfill. After a first thickness of the doped or undoped silicon carbide film is deposited in the one or more features, the doped or undoped silicon carbide film is exposed to a remote hydrogen plasma under conditions that cause a size of an opening near a top surface of each of the one or more features to increase, where the conditions can be controlled by controlling treatment time, treatment frequency, treatment power, and/or remote plasma gas composition. Operations of depositing additional thicknesses of silicon carbide film and performing a remote hydrogen plasma treatment are repeated to at least substantially fill the one or more features. Various time intervals between deposition and plasma treatment may be added to modulate gapfill performance.
    Type: Application
    Filed: April 12, 2022
    Publication date: July 28, 2022
    Inventors: Guangbi YUAN, Ieva NARKEVICIUTE, Bo GONG, Bhadri N. VARADARAJAN
  • Publication number: 20210391171
    Abstract: A doped or undoped silicon carbide (SiCxOyNz) film can be deposited in one or more features of a substrate for gapfill. After a first thickness of the doped or undoped silicon carbide film is deposited in the one or more features, the doped or undoped silicon carbide film is exposed to a remote hydrogen plasma under conditions that cause a size of an opening near a top surface of each of the one or more features to increase, where the conditions can be controlled by controlling treatment time, treatment frequency, treatment power, and/or remote plasma gas composition. Operations of depositing additional thicknesses of silicon carbide film and performing a remote hydrogen plasma treatment are repeated to at least substantially fill the one or more features. Various time intervals between deposition and plasma treatment may be added to modulate gapfill performance.
    Type: Application
    Filed: October 10, 2019
    Publication date: December 16, 2021
    Inventors: Guangbi Yuan, Ieva Narkeviciute, Bo Gong, Bhadri N. Varadarajan