Patents by Inventor Praneet Adusumilli

Praneet Adusumilli 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).

  • Patent number: 11158788
    Abstract: A method for manufacturing a semiconductor device includes forming a memory element in a dielectric layer. A first conductive layer is deposited on the dielectric layer and the memory element by atomic layer deposition, and a second conductive layer is deposited on the first conductive layer by physical vapor deposition. In the method, the first and second conductive layers are patterned into an electrode on the memory element.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: October 26, 2021
    Assignee: International Business Machines Corporation
    Inventors: Kevin W. Brew, Iqbal Rashid Saraf, Injo Ok, Nicole Saulnier, Praneet Adusumilli
  • Patent number: 11145811
    Abstract: Resistive memory with core and shell oxides and interface dipoles for controlled filament formation is provided. In one aspect, a ReRAM device includes at least one ReRAM cell having a substrate; a bottom electrode disposed on the substrate; spacers formed from a low group electron negativity material disposed on the bottom electrode; a core formed from a high group electron negativity material present between the spacers; and a top electrode over and in contact with the spacers and the core, wherein a combination of the low group electron negativity material for the spacers and the high group electron negativity material for the core generates an interface dipole pointing toward the core. Methods of forming and operating a ReRAM device are also provided.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: October 12, 2021
    Assignee: International Business Machines Corporation
    Inventors: Takashi Ando, Jianshi Tang, Praneet Adusumilli, Reinaldo Vega
  • Publication number: 20210305093
    Abstract: A semiconductor structure is provided including a gate cut region in which the contact trench size has been optimized to increase local interconnect connectivity. The semiconductor structure can include at least one gate structure located laterally adjacent to a gate cut region. At least one metal-containing contact structure is located in the gate cut region, wherein the at least one at least one metal-containing contact structure is confined by a pair of gate dielectric spacers, wherein a first gate dielectric spacer of the pair of gate dielectric spacers has a first width and is located laterally adjacent to the at least one gate structure, and a second gate dielectric spacer of the pair of gate dielectric spacers has a second width and is located laterally adjacent to the at least one metal-containing contact structure, wherein the first width is greater than the second width.
    Type: Application
    Filed: March 27, 2020
    Publication date: September 30, 2021
    Inventors: Alexander Reznicek, Balasubramanian S. Pranatharthi Haran, Praneet Adusumilli, Ruilong Xie
  • Patent number: 11133217
    Abstract: A semiconductor structure is provided including a gate cut region in which the contact trench size has been optimized to increase local interconnect connectivity. The semiconductor structure can include at least one gate structure located laterally adjacent to a gate cut region. At least one metal-containing contact structure is located in the gate cut region, wherein the at least one at least one metal-containing contact structure is confined by a pair of gate dielectric spacers, wherein a first gate dielectric spacer of the pair of gate dielectric spacers has a first width and is located laterally adjacent to the at least one gate structure, and a second gate dielectric spacer of the pair of gate dielectric spacers has a second width and is located laterally adjacent to the at least one metal-containing contact structure, wherein the first width is greater than the second width.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: September 28, 2021
    Assignee: International Business Machines Corporation
    Inventors: Alexander Reznicek, Balasubramanian S. Pranatharthi Haran, Praneet Adusumilli, Ruilong Xie
  • Patent number: 11088033
    Abstract: A semiconductor structure and a method for fabricating the same. The semiconductor structure includes at least one semiconductor fin disposed on a substrate. A disposable gate contacts the at least one semiconductor fin. A spacer is disposed on the at least one semiconductor fin and in contact with the disposable gate. Epitaxially grown source and drain regions are disposed at least partially within the at least one semiconductor fin. A first one of silicide and germanide is disposed on and in contact with the source region. A second one of one of silicide and germanide is disposed on and in contact with the drain region. The method includes epitaxially growing source/drain regions within a semiconductor fin. A contact metal layer contacts the source/drain regions. One of a silicide and a germanide is formed on the source/drain regions from the contact metal layer prior to removing the disposable gate.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: August 10, 2021
    Assignee: International Business Machines Corporation
    Inventors: Praneet Adusumilli, Hemanth Jagannathan, Christian Lavoie, Ahmet S. Ozcan
  • Publication number: 20210242402
    Abstract: Devices with settable resistance and methods of forming the same include forming vertical dielectric structures from heterogeneous dielectric materials on a first electrode. A second electrode is formed on the vertical dielectric structures.
    Type: Application
    Filed: April 19, 2021
    Publication date: August 5, 2021
    Inventors: Jianshi Tang, Takashi Ando, Reinaldo Vega, Praneet Adusumilli
  • Patent number: 11081542
    Abstract: A buried metal-insulator-metal (MIM) capacitor with landing pads is formed between first and second semiconductor substrates. The landing pads provide increased area for contacting which may decrease the contact resistors of the capacitor. The area of the buried MIM capacitor can be varied to provide a tailored capacitance. The buried MIM capacitor is thermally stable since the MIM capacitor includes refractory metal or metal alloy layers as the capacitor plates.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: August 3, 2021
    Assignee: International Business Machines Corporation
    Inventors: Alexander Reznicek, Praneet Adusumilli, Oscar van der Straten, Joshua Rubin
  • Patent number: 11081543
    Abstract: Method and apparatus for a capacitive structure. The capacitive structure includes a material stack having a deep trench formed therein. The material stack includes alternating vertical and semi-ovoid sidewall surfaces. The material stack further includes alternating metallization layers and dielectric layers. At least one of the semi-spheroidal sidewall surfaces is formed in a sidewall of at least one of the dielectric layers in the deep trench. At least one of the vertical sidewall surfaces is a sidewall surface of at least one metallization layer in the deep trench.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: August 3, 2021
    Assignee: International Business Machines Corporation
    Inventors: Alexander Reznicek, Praneet Adusumilli, Shanti Pancharatnam, Oscar Van Der Straten
  • Patent number: 11062956
    Abstract: A semiconductor structure and a method for fabricating the same. The semiconductor structure includes at least one semiconductor fin disposed on a substrate. A disposable gate contacts the at least one semiconductor fin. A spacer is disposed on the at least one semiconductor fin and in contact with the disposable gate. Epitaxially grown source and drain regions are disposed at least partially within the at least one semiconductor fin. A first one of silicide and germanide is disposed on and in contact with the source region. A second one of one of silicide and germanide is disposed on and in contact with the drain region. The method includes epitaxially growing source/drain regions within a semiconductor fin. A contact metal layer contacts the source/drain regions. One of a silicide and a germanide is formed on the source/drain regions from the contact metal layer prior to removing the disposable gate.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: July 13, 2021
    Assignee: International Business Machines Corporation
    Inventors: Praneet Adusumilli, Hemanth Jagannathan, Christian Lavoie, Ahmet S. Ozcan
  • Patent number: 11050023
    Abstract: Devices with settable resistance and methods of forming the same include forming vertical dielectric structures from heterogeneous dielectric materials on a first electrode. A second electrode is formed on the vertical dielectric structures.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: June 29, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Jianshi Tang, Takashi Ando, Reinaldo Vega, Praneet Adusumilli
  • Patent number: 11038097
    Abstract: Magnetic structures including magnetic inductors and magnetic tunnel junction (MTJ)-containing structures that have tapered sidewalls are formed without using an ion beam etch (IBE). The magnetic structures are formed by providing a material stack of a dielectric capping layer and a sacrificial dielectric material layer above a lower interconnect level. First and second etching steps are performed to pattern the sacrificial dielectric material layer and the dielectric capping layer such that a patterned dielectric capping layer is provided with a tapered sidewall. After removing the sacrificial dielectric material layer, a magnetic material-containing stack is formed within the opening in the patterned dielectric capping layer and atop the patterned dielectric capping layer. A planarization process is then employed to pattern the magnetic-containing stack by removing the magnetic material-containing stack that is located atop the patterned dielectric capping layer.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: June 15, 2021
    Assignee: International Business Machines Corporation
    Inventors: Bruce B. Doris, Oscar van der Straten, Alexander Reznicek, Praneet Adusumilli
  • Publication number: 20210167128
    Abstract: A vertical resistive switching memory device is provided that includes a resistive random access memory (ReRAM) stack embedded in a material stack of alternating layers of an interlayer dielectric material and a recessed electrode material. A selector device encapsulates a portion of the ReRAM stack and is present in an undercut region that is laterally adjacent to each of the recessed electrode material layers of the material stack.
    Type: Application
    Filed: December 3, 2019
    Publication date: June 3, 2021
    Inventors: Takashi Ando, Praneet Adusumilli, Reinaldo Vega, Cheng Chi
  • Patent number: 11011697
    Abstract: A magnetic tunnel junction (MTJ) structure having faceted sidewalls is formed on a conductive landing pad that is present on a surface of an electrically conductive structure embedded in a dielectric material layer. No metal ions are re-sputtered onto the sidewalls of the MTJ structure during the patterning of the MTJ material stack that provides the MTJ structure. The absence of re-sputtered metal on the MTJ structure sidewalls reduces the risk of shorts.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: May 18, 2021
    Assignee: International Business Machines Corporation
    Inventors: Oscar van der Straten, Alexander Reznicek, Praneet Adusumilli
  • Publication number: 20210119122
    Abstract: Resistive memory with core and shell oxides and interface dipoles for controlled filament formation is provided. In one aspect, a ReRAM device includes at least one ReRAM cell having a substrate; a bottom electrode disposed on the substrate; spacers formed from a low group electron negativity material disposed on the bottom electrode; a core formed from a high group electron negativity material present between the spacers; and a top electrode over and in contact with the spacers and the core, wherein a combination of the low group electron negativity material for the spacers and the high group electron negativity material for the core generates an interface dipole pointing toward the core. Methods of forming and operating a ReRAM device are also provided.
    Type: Application
    Filed: October 16, 2019
    Publication date: April 22, 2021
    Inventors: Takashi Ando, Jianshi Tang, Praneet Adusumilli, Reinaldo Vega
  • Publication number: 20210098698
    Abstract: Tapered resistive memory devices with interface dipoles are provided. In one aspect, a ReRAM device includes: a bottom electrode; a core dielectric that is thermally conductive disposed on the bottom electrode; an oxide resistive memory cell disposed along outer sidewalls of the core dielectric, wherein the oxide resistive memory cell has inner edges adjacent to the core dielectric, and outer edges that are tapered; an outer coating disposed adjacent to the outer edges of the oxide resistive memory cell; and a top electrode disposed on the core dielectric, the oxide resistive memory cell, and the outer coating. A method of forming a ReRAM device as well as a method of operating a ReRAM device are also provided.
    Type: Application
    Filed: September 30, 2019
    Publication date: April 1, 2021
    Inventors: Reinaldo Vega, Takashi Ando, Jianshi Tang, Praneet Adusumilli
  • Publication number: 20210091307
    Abstract: A method may include forming a bottom electrode in an interlayer dielectric, depositing a liner on top of the bottom electrode, depositing a phase change material layer on top of the liner, wherein a top surface of the liner is in direct contact with a bottom surface of the phase change material layer, and depositing a barrier on top of the phase change material layer, wherein a top surface of the phase change material layer is in direct contact with a bottom surface of the barrier. The barrier may be made of doped phase change material. The forming of the bottom electrode may further include forming a via in the interlayer dielectric, depositing an outer layer along a bottom and a sidewall of the via, depositing a middle layer on top of the outer layer, and depositing an inner layer on top of the middle layer.
    Type: Application
    Filed: September 20, 2019
    Publication date: March 25, 2021
    Inventors: Matthew Joseph BrightSky, Praneet Adusumilli
  • Publication number: 20210091300
    Abstract: Magnetic structures including magnetic inductors and magnetic tunnel junction (MTJ)-containing structures that have tapered sidewalls are formed without using an ion beam etch (IBE). The magnetic structures are formed by providing a material stack of a dielectric capping layer and a sacrificial dielectric material layer above a lower interconnect level. First and second etching steps are performed to pattern the sacrificial dielectric material layer and the dielectric capping layer such that a patterned dielectric capping layer is provided with a tapered sidewall. After removing the sacrificial dielectric material layer, a magnetic material-containing stack is formed within the opening in the patterned dielectric capping layer and atop the patterned dielectric capping layer. A planarization process is then employed to pattern the magnetic-containing stack by removing the magnetic material-containing stack that is located atop the patterned dielectric capping layer.
    Type: Application
    Filed: September 19, 2019
    Publication date: March 25, 2021
    Inventors: Bruce B. Doris, Oscar van der Straten, Alexander Reznicek, Praneet Adusumilli
  • Patent number: 10943988
    Abstract: A semiconductor device includes epitaxially grown source/drain (S/D) regions each having a cross-sectional quadrilateral shape formed on a semiconductor fin on opposite sides of a transversely disposed gate structure. The S/D regions include top (111) facets on top halves of the cross-sectional quadrilateral shape. The device further includes a silicide formed on the top (111) facets.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: March 9, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Praneet Adusumilli, Emre Alptekin, Christian Lavoie, Ahmet S. Ozcan
  • Patent number: 10937889
    Abstract: A method for forming a salicide includes forming, on at least one semiconductor fin, at least one source/drain (S/D) region including a (111) facet and having a cross-sectional quadrilateral shape, forming a conductive material on the (111) facet, annealing the conductive material to form a silicide on the (111) facet, and forming at least one contact to the silicide.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: March 2, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Praneet Adusumilli, Emre Alptekin, Christian Lavoie, Ahmet S. Ozcan
  • Patent number: 10915811
    Abstract: An electro-chemical random-access memory (ECRAM) cell includes a substrate and a plurality of source-drain pairs positioned on a top surface of the substrate, each source-drain pair comprising a source and a drain. A channel at least partially overlays the substrate and the plurality of source-drain pairs, and a transfer layer at least partially overlays the channel. A gate at least partially overlays the transfer layer, the gate at least partially controlling a channel between each source-drain pair.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: February 9, 2021
    Assignee: International Business Machines Corporation
    Inventors: Takashi Ando, Jianshi Tang, Praneet Adusumilli, Reinaldo Vega