Patents by Inventor Venkateswara R. Pallem

Venkateswara R. Pallem 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: 12187853
    Abstract: Disclosed is a SAM forming composition comprising a SAM monomer or precursor having a backbone with a surface reactive group, wherein the backbone contains no Si—C bonds and is selected from the group consisting of a Si—C bond-free polysilane and a trisilylamine. The surface reactive groups are disclosed for the surface to be covered being a dielectric surface and a metal surface, respectively. A process of forming a SAM on a surface and a process of forming a film on the SAM are also disclosed.
    Type: Grant
    Filed: June 18, 2021
    Date of Patent: January 7, 2025
    Assignees: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude, American Air Liquide, Inc.
    Inventors: Venkateswara R. Pallem, Jean-Marc Girard, Nicolas Blasco, Claudia Fafard, Fabrizio Marchegiani
  • Publication number: 20240384400
    Abstract: [Purpose] To provide a method of forming a ruthenium-containing layer and a laminate, wherein the ruthenium-containing layer is selectively formed, as a protective layer capable of suppressing generation of etching residues, on a mask surface for pattern formation that is formed on a substrate, without the need for forming a selective attractant element. [Solution] A method, which comprises a preparation step of providing a substrate having an oxidizable layer, and a deposition step of depositing a ruthenium-containing layer on the oxidizable layer by using a ruthenium tetraoxide through vapour deposition, wherein the oxidizable layer contains carbon atoms.
    Type: Application
    Filed: October 25, 2022
    Publication date: November 21, 2024
    Inventors: Rocio Alejandra ARTEAGA MULLER, Jean-Marc GIRARD, Julien GATINEAU, Venkateswara R. PALLEM
  • Publication number: 20240222114
    Abstract: A method of forming a conformal and continuous crystalline Si film on a surface of a substrate comprises: exposing the substrate to a vapor of a first Si-containing precursor under a first temperature; allowing a seed film being formed onto the surface; exposing the substrate to a vapor of a second Si-containing precursor and a vapor of a dopant precursor under a second temperature; depositing a doped amorphous Si-containing film onto the seed film by a chemical vapor deposition (CVD) process; and annealing the substrate to crystalize the doped amorphous Si-containing film forming the conformal and continuous crystalline Si film on the surface. The first Si-containing precursor is (diisobutylamine)trisilane ((iBu)2-N—(SiH2)2—SiH3).
    Type: Application
    Filed: December 27, 2022
    Publication date: July 4, 2024
    Applicants: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude, American Air Liquide, Inc.
    Inventors: Claudia Fafard, Sana Rani, Nathan Stafford, Jean-Marc Girard, Venkateswara R. Pallem
  • Publication number: 20240112920
    Abstract: Cyclic etch methods comprise the steps of: i) exposing a SiN layer covering a structure on a substrate in a reaction chamber to a plasma of hydrofluorocarbon (HFC) to form a polymer layer deposited on the SiN layer that modifies the surface of the SiN layer, the HFC having a formula CxHyFz where x=2-5, y>z, the HFC being a saturated or unsaturated, linear or cyclic HFC; ii) exposing the polymer layer deposited on the SiN layer to a plasma of an inert gas, the plasma of the inert gas removing the polymer layer deposited on the SiN layer and the modified surface of the SiN layer on an etch front; and iii) repeating the steps of i) and ii) until the SiN layer on the etch front is selectively removed, thereby forming a substantially vertically straight SiN spacer comprising the SiN layer on the sidewall of the structure.
    Type: Application
    Filed: October 25, 2023
    Publication date: April 4, 2024
    Applicant: AMERICAN AIR LIQUIDE, INC.
    Inventors: Xiangyu GUO, James ROYER, Venkateswara R. PALLEM, Nathan STAFFORD
  • Patent number: 11837474
    Abstract: Cyclic etch methods comprise the steps of: i) exposing a SiN layer covering a structure on a substrate in a reaction chamber to a plasma of hydrofluorocarbon (HFC) to form a polymer layer deposited on the SiN layer that modifies the surface of the SiN layer, the HFC having a formula CxHyFz where x=2-5, y>z, the HFC being a saturated or unsaturated, linear or cyclic HFC; ii) exposing the polymer layer deposited on the SiN layer to a plasma of an inert gas, the plasma of the inert gas removing the polymer layer deposited on the SiN layer and the modified surface of the SiN layer on an etch front; and iii) repeating the steps of i) and ii) until the SiN layer on the etch front is selectively removed, thereby forming a substantially vertically straight SiN spacer comprising the SiN layer on the sidewall of the structure.
    Type: Grant
    Filed: September 15, 2022
    Date of Patent: December 5, 2023
    Assignee: American Air Liquide, Inc.
    Inventors: Xiangyu Guo, James Royer, Venkateswara R. Pallem, Nathan Stafford
  • Patent number: 11821080
    Abstract: A process for gas phase deposition of a metal or metal nitride film on a surface substrate comprises: reacting a metal-oxo or metal oxyhalide precursor with an oxophilic reagent in a reactor containing the substrate to deoxygenate the metal-oxo or metal oxyhalide precursor, and forming the metal or metal nitride film on the substrate through a vapor deposition process. The substrate is exposed to the metal oxyhalide precursor and the oxophilic reagent simultaneously or sequentially. The substrate is exposed to a reducing agent sequentially after deoxygenation.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: November 21, 2023
    Assignee: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
    Inventors: Yumin Liu, Rocio Alejandra Arteaga Muller, Nicolas Blasco, Jean-Marc Girard, Feng Li, Venkateswara R. Pallem, Zhengning Gao
  • Publication number: 20230357281
    Abstract: Disclosed are indium (In)-containing film forming compositions comprising In(III)-containing precursors that contain halogens, methods of synthesizing them and methods of using them to deposit the indium-containing films and/or indium-containing alloy film. The disclosed In(III)-containing precursors contain chlorine with nitrogen based ligands. In particular, the disclosed In(III)-containing precursors contains 1 or 2 amidinate ligands, 1 or 2 iminopyrrolidinate ligands, 1 or 2 amido amino alkane ligands, 1 or 2 ?-diketiminate ligands or a silyl amine ligand. The disclosed In(III)-containing precursors are suitable for vapor phase depositions (e.g., ALD, CVD) of the indium-containing films and/or indium-containing alloy films.
    Type: Application
    Filed: July 3, 2023
    Publication date: November 9, 2023
    Applicant: American Air Liquide, Inc.
    Inventors: Kayla DIEMOZ, Bradley McKEOWN, Claudia FAFARD, Venkateswara R. PALLEM
  • Publication number: 20230331926
    Abstract: Disclosed is a SAM forming composition comprising a SAM monomer or precursor having a backbone with a surface reactive group, wherein the backbone contains no Si—C bonds and is selected from the group consisting of a Si—C bond-free polysilane and a trisilylamine. The surface reactive groups are disclosed for the surface to be covered being a dielectric surface and a metal surface, respectively. A process of forming a SAM on a surface and a process of forming a film on the SAM are also disclosed.
    Type: Application
    Filed: June 18, 2021
    Publication date: October 19, 2023
    Inventors: Venkateswara R. PALLEM, Jean-Marc GIRARD, Nicoas BLASCO, Claudia FAFARD, Fabrizio MARCHEGIANI
  • Publication number: 20230323530
    Abstract: Methods for forming a Group V-containing film comprise: a) exposing a substrate to a vapor of a Group V (five)-containing film forming composition; b) exposing the substrate to a co-reactant; and c) repeating the steps of a) and b) until a desired thickness of the Group V (five)-containing film is deposited on the substrate using a vapor deposition process, wherein the Group V (five)-containing film forming composition comprises a precursor having the formula: wherein M is Group V (five) element, vanadium (V), niobium (Nb), or tantalum (Ta); R1 to R8 each is H, a C1-C6 alkyl group, a fluoro group, an alkylsilyl group, a germyl group, an alkylamide or an alkylsilylamide; m=1 to 5, n=1 to 5.
    Type: Application
    Filed: April 12, 2022
    Publication date: October 12, 2023
    Inventors: Daehyeon KIM, Wontae NOH, Jooho LEE, Venkateswara R. PALLEM
  • Patent number: 11784041
    Abstract: The disclosed lanthanide precursor compounds include a cyclopentadienyl ligand having at least one aliphatic group as a substituent and at least one bidentate ligand. These precursors are suitable for depositing lanthanide containing films.
    Type: Grant
    Filed: February 8, 2022
    Date of Patent: October 10, 2023
    Assignees: L'Air Liquide, Sociéte Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude, American Air Liquide, Inc.
    Inventors: Daehyeon Kim, Junhyun Song, Wontae Noh, Venkateswara R. Pallem
  • Publication number: 20230274947
    Abstract: In described embodiments, methods for selective etching (thermal etching) of metals, especially molybdenum- and tungsten-containing materials, and titanium nitride, using thionyl chloride (SOCl2) as an etching gas at low temperatures and low pressure without a need of plasma, for device manufacturing processes and for process chamber cleanings are disclosed. Methods for cleaning reaction product deposits from interior surface of a reactor chamber or from a substrate within said reaction chamber using thionyl chloride (SOCl2) at low temperatures and low pressure without a need of plasma are also disclosed. An additional co-reactant such as hydrogen may be used in combination with thionyl chloride. The processes are carried out in temperature ranging from approximately 150° C. to approximately 600° C., pressure under<100 Torr without the need of a plasma-activation.
    Type: Application
    Filed: July 13, 2021
    Publication date: August 31, 2023
    Inventors: Rocio Alejandra ARTEAGA MULLER, Masato HIRAI, Rapheal ROCHAT, Jean-Marc GIRARD, Venkateswara R. PALLEM, Nicolas BLASCO, Nicolas GOSSET, Megumi ISAJI
  • Publication number: 20230253200
    Abstract: The disclosed lanthanide precursor compounds include a cyclopentadienyl ligand having at least one aliphatic group as a substituent and at least one bidentate ligand. These precursors are suitable for depositing lanthanide containing films.
    Type: Application
    Filed: February 8, 2022
    Publication date: August 10, 2023
    Inventors: Daehyeon KIM, Junhyun SONG, Wontae NOH, Venkateswara R. PALLEM
  • Publication number: 20230095074
    Abstract: A method of forming a gap filling on a substrate, the substrate having gaps formed therein, comprises: producing a gap filling polycarbosilazane polymer or oligomer by a polymerization of a reaction mixture of carbosilanes with amines; forming a solution containing the gap filling polycarbosilazane polymer or oligomer; and contacting the solution with the substrate via a spin-on coating, spray coating, dip coating, or slit coating technique to fill the gaps in the substrate forming the silicon and carbon containing gap filling, wherein a concentration of the gap filling polycarbosilazane polymer or oligomer in the solution ranges from 1 to 60 wt %.
    Type: Application
    Filed: October 31, 2022
    Publication date: March 30, 2023
    Inventors: Yumin LIU, Jean-Marc GIRARD, Peng ZHANG, Fan QIN, Gennadiy ITOV, Fabrizio MARCHEGIANI, Thomas J. LARRABEE, Venkateswara R. PALLEM
  • Publication number: 20230026743
    Abstract: Cyclic etch methods comprise the steps of: i) exposing a SiN layer covering a structure on a substrate in a reaction chamber to a plasma of hydrofluorocarbon (HFC) to form a polymer layer deposited on the SiN layer that modifies the surface of the SiN layer, the HFC having a formula CxHyFz where x=2-5, y>z, the HFC being a saturated or unsaturated, linear or cyclic HFC; ii) exposing the polymer layer deposited on the SiN layer to a plasma of an inert gas, the plasma of the inert gas removing the polymer layer deposited on the SiN layer and the modified surface of the SiN layer on an etch front; and iii) repeating the steps of i) and ii) until the SiN layer on the etch front is selectively removed, thereby forming a substantially vertically straight SiN spacer comprising the SiN layer on the sidewall of the structure.
    Type: Application
    Filed: September 15, 2022
    Publication date: January 26, 2023
    Inventors: Xiangyu GUO, James Royer, Venkateswara R. Pallem, Nathan Stafford
  • Patent number: 11469110
    Abstract: Cyclic etch methods comprise the steps of: i) exposing a SiN layer covering a structure on a substrate in a reaction chamber to a plasma of hydrofluorocarbon (HFC) to form a polymer layer deposited on the SiN layer that modifies the surface of the SiN layer, the HFC having a formula CxHyFz where x=2-5, y>z, the HFC being a saturated or unsaturated, linear or cyclic HFC; ii) exposing the polymer layer deposited on the SiN layer to a plasma of an inert gas, the plasma of the inert gas removing the polymer layer deposited on the SiN layer and the modified surface of the SiN layer on an etch front; and iii) repeating the steps of i) and ii) until the SiN layer on the etch front is selectively removed, thereby forming a substantially vertically straight SiN spacer comprising the SiN layer on the sidewall of the structure.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: October 11, 2022
    Assignee: American Air Liquide, Inc.
    Inventors: Xiangyu Guo, James Royer, Venkateswara R. Pallem, Nathan Stafford
  • Patent number: 11430663
    Abstract: A method for etching silicon-containing films is disclosed. The method includes the steps of introducing a vapor of an iodine-containing etching compound into a reaction chamber containing a silicon-containing film on a substrate, wherein the iodine-containing etching compound has the formula CaHxFyIz, wherein a=1-3, x=0-6, y=1-7, z=1-2, x+y+z=4 when a=1, x+y+z=4 or 6 when a=2, and x+y+z=6 or 8 when a=3; introducing an inert gas into the reaction chamber; and activating a plasma to produce an activated iodine-containing etching compound capable of etching the silicon-containing film from the substrate.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: August 30, 2022
    Assignees: American Air Liquide, Inc., L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude, Air Liquide Electronics U.S. LP
    Inventors: Vijay Surla, Rahul Gupta, Hui Sun, Venkateswara R. Pallem, Nathan Stafford, Fabrizio Marchegiani, Vincent M. Omarjee, James Royer
  • Publication number: 20220106333
    Abstract: Disclosed are indium (In)-containing film forming compositions comprising In(III)-containing precursors that contain halogens, methods of synthesizing them and methods of using them to deposit the indium-containing films and/or indium-containing alloy film. The disclosed In(III)-containing precursors contain chlorine with nitrogen based ligands. In particular, the disclosed In(III)-containing precursors contains 1 or 2 amidinate ligands, 1 or 2 iminopyrrolidinate ligands, 1 or 2 amido amino alkane ligands, 1 or 2 ?-diketiminate ligands or a silyl amine ligand. The disclosed In(III)-containing precursors are suitable for vapor phase depositions (e.g., ALD, CVD) of the indium-containing films and/or indium-containing alloy films.
    Type: Application
    Filed: October 6, 2020
    Publication date: April 7, 2022
    Inventors: Kayla DIEMOZ, Bradley McKEOWN, Claudia FAFARD, Venkateswara R. PALLEM
  • Publication number: 20210277517
    Abstract: A process for gas phase deposition of a metal or metal nitride film on a surface substrate comprises: reacting a metal-oxo or metal oxyhalide precursor with an oxophilic reagent in a reactor containing the substrate to deoxygenate the metal-oxo or metal oxyhalide precursor, and forming the metal or metal nitride film on the substrate through a vapor deposition process. The substrate is exposed to the metal oxyhalide precursor and the oxophilic reagent simultaneously or sequentially. The substrate is exposed to a reducing agent sequentially after deoxygenation.
    Type: Application
    Filed: March 5, 2021
    Publication date: September 9, 2021
    Inventors: Yumin Liu, Rocio Arteaga, Nicolas Blasco, Jean-Marc Girard, Feng Li, Venkateswara R. Pallem, Zhengning Gao
  • Publication number: 20200251346
    Abstract: Cyclic etch methods comprise the steps of: i) exposing a SiN layer covering a structure on a substrate in a reaction chamber to a plasma of hydrofluorocarbon (HFC) to form a polymer layer deposited on the SiN layer that modifies the surface of the SiN layer, the HFC having a formula CxHyFz where x=2-5, y>z, the HFC being a saturated or unsaturated, linear or cyclic HFC; ii) exposing the polymer layer deposited on the SiN layer to a plasma of an inert gas, the plasma of the inert gas removing the polymer layer deposited on the SiN layer and the modified surface of the SiN layer on an etch front; and iii) repeating the steps of i) and ii) until the SiN layer on the etch front is selectively removed, thereby forming a substantially vertically straight SiN spacer comprising the SiN layer on the sidewall of the structure.
    Type: Application
    Filed: March 17, 2020
    Publication date: August 6, 2020
    Inventors: Xiangyu GUO, James ROYER, Venkateswara R. PALLEM, Nathan STAFFORD
  • Publication number: 20200203174
    Abstract: A method for etching silicon-containing films is disclosed. The method includes the steps of introducing a vapor of an iodine-containing etching compound into a reaction chamber containing a silicon-containing film on a substrate, wherein the iodine-containing etching compound has the formula CaHxFyIz, wherein a=1-3, x=0-6, y=1-7, z=1-2, x+y+z=4 when a=1, x+y+z=4 or 6 when a=2, and x+y+z=6 or 8 when a=3; introducing an inert gas into the reaction chamber; and activating a plasma to produce an activated iodine-containing etching compound capable of etching the silicon-containing film from the substrate.
    Type: Application
    Filed: March 3, 2020
    Publication date: June 25, 2020
    Inventors: Vijay Surla, Rahul Gupta, Hui Sun, Venkateswara R. Pallem, Nathan Stafford, Fabrizio Marchegiani, Vincent M. Omarjee, James Royer