Patents by Inventor Monica Mathur

Monica Mathur 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: 20160133691
    Abstract: Steps are taken to ensure that the bulk dielectric layer exhibits a crystalline phase before the deposition of a second electrode layer. The crystalline phase of the bulk dielectric layer facilitates the crystallization of the second electrode layer at lower temperature during a subsequent anneal treatment. In some embodiments, one or more interface layers are inserted between the bulk dielectric layer and the first electrode layer and/or the second electrode layer. The interface layers may act as an oxygen sink, facilitate the crystallization of the electrode layer at lower temperature during a subsequent anneal treatment, or provide barriers to leakage current through the film stack.
    Type: Application
    Filed: November 6, 2014
    Publication date: May 12, 2016
    Inventors: Prashant B. Phatak, Hanhong Chen, Tony P. Chiang, Chien-Lan Hsueh, Monica Mathur
  • Publication number: 20160111471
    Abstract: Selector elements that can be suitable for nonvolatile memory device applications are disclosed. The selector element can have low leakage currents at low voltages to reduce sneak current paths for non selected devices, and higher leakage currents at higher voltages to minimize voltage drops during device switching. The selector element can be based on multilayer film stacks (e.g. metal-semiconductor-metal (MSM) stacks). The semiconductor layer of the selector element can include a silicon carbide/silicon nitride nanolaminate stack. The semiconductor layer of the selector element can include a silicon carbon nitride/silicon nitride nanolaminate stack. Conductive materials of the MSM may include tungsten, titanium nitride, carbon, or a combination thereof.
    Type: Application
    Filed: October 16, 2014
    Publication date: April 21, 2016
    Inventors: Monica Mathur, Mark Clark
  • Patent number: 9318531
    Abstract: Selector elements that can be suitable for nonvolatile memory device applications are disclosed. The selector element can have low leakage currents at low voltages to reduce sneak current paths for non selected devices, and higher leakage currents at higher voltages to minimize voltage drops during device switching. The selector element can be based on multilayer film stacks (e.g. metal-semiconductor-metal (MSM) stacks). The semiconductor layer of the selector element can include a silicon carbide/silicon nitride nanolaminate stack. The semiconductor layer of the selector element can include a silicon carbon nitride/silicon nitride nanolaminate stack. Conductive materials of the MSM may include tungsten, titanium nitride, carbon, or a combination thereof.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: April 19, 2016
    Assignee: Intermolecular, Inc.
    Inventors: Monica Mathur, Mark Clark
  • Publication number: 20160099304
    Abstract: A capacitor stack includes a base bottom electrode layer including a conductive metal nitride material. A second bottom electrode layer is formed above the first bottom electrode layer. The second bottom electrode layer includes a conductive metal oxide material, wherein the crystal structure of the conductive metal oxide material promotes a desired high-k crystal phase of a subsequently deposited dielectric layer. A dielectric layer is formed above the second bottom electrode layer. A molybdenum nitride or a molybdenum oxy-nitride layer is formed above the dielectric layer. A fourth top electrode layer is formed above the third top electrode layer. The base top electrode layer includes a conductive metal nitride material.
    Type: Application
    Filed: October 6, 2014
    Publication date: April 7, 2016
    Inventor: Monica Mathur
  • Patent number: 8962354
    Abstract: Methods of forming layers can comprise defining a plurality of discrete site-isolated regions (SIRs) on a substrate, forming a first layer on one of the discrete SIRs, forming a second layer on the first layer, measuring a lattice parameter or an electrical property of the second layer, The process parameters for the formation of the first layer are varied in a combinatorial manner between different discrete SIRs to explore the possible layers that can result in suitable lattice matching for second layer of a desired crystalline structure.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: February 24, 2015
    Assignee: Intermolecular, Inc.
    Inventors: Monica Mathur, Michael Miller, Prashant B. Phatak
  • Publication number: 20150010705
    Abstract: Methods of forming layers can comprise defining a plurality of discrete site-isolated regions (SIRs) on a substrate, forming a first layer on one of the discrete SIRs, forming a second layer on the first layer, measuring a lattice parameter or an electrical property of the second layer, The process parameters for the formation of the first layer are varied in a combinatorial manner between different discrete SIRs to explore the possible layers that can result in suitable lattice matching for second layer of a desired crystalline structure.
    Type: Application
    Filed: September 19, 2014
    Publication date: January 8, 2015
    Inventors: Monica Mathur, Michael Miller, Prashant B. Phatak
  • Patent number: 8865484
    Abstract: Methods of forming layers can comprise defining a plurality of discrete site-isolated regions (SIRs) on a substrate, forming a first layer on one of the discrete SIRs, forming a second layer on the first layer, measuring a lattice parameter or an electrical property of the second layer, The process parameters for the formation of the first layer are varied in a combinatorial manner between different discrete SIRs to explore the possible layers that can result in suitable lattice matching for second layer of a desired crystalline structure.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: October 21, 2014
    Assignee: Intermolecular, Inc.
    Inventors: Monica Mathur, Michael Miller, Prashant B. Phatak
  • Publication number: 20140179033
    Abstract: Methods of forming layers can comprise defining a plurality of discrete site-isolated regions (SIRs) on a substrate, forming a first layer on one of the discrete SIRs, forming a second layer on the first layer, measuring a lattice parameter or an electrical property of the second layer, The process parameters for the formation of the first layer are varied in a combinatorial manner between different discrete SIRs to explore the possible layers that can result in suitable lattice matching for second layer of a desired crystalline structure.
    Type: Application
    Filed: December 26, 2012
    Publication date: June 26, 2014
    Applicant: INTERMOLECULAR, INC.
    Inventors: Monica Mathur, Michael Miller, Prashant B. Phatak
  • Patent number: 8551851
    Abstract: This disclosure provides (a) methods of making an oxide layer (e.g., a dielectric layer) based on titanium oxide, to suppress the formation of anatase-phase titanium oxide and (b) related devices and structures. A metal-insulator-metal (“MIM”) stack is formed using an ozone pretreatment process of a bottom electrode (or other substrate) followed by an ALD process to form a TiO2 dielectric, rooted in the use of an amide-containing precursor. Following the ALD process, an oxidizing anneal process is applied in a manner is hot enough to heal defects in the TiO2 dielectric and reduce interface states between TiO2 and electrode; the anneal temperature is selected so as to not be so hot as to disrupt BEL surface roughness. Further process variants may include doping the titanium oxide, pedestal heating during the ALD process to 275-300 degrees Celsius, use of platinum or ruthenium for the BEL, and plural reagent pulses of ozone for each ALD process cycle.
    Type: Grant
    Filed: May 4, 2011
    Date of Patent: October 8, 2013
    Assignee: Intermolecular, Inc.
    Inventors: Hanhong Chen, Pragati Kumar, Sunil Shanker, Edward Haywood, Sandra Malhotra, Imran Hashim, Nobi Fuchigami, Prashant Phatak, Monica Mathur
  • Publication number: 20110203085
    Abstract: This disclosure provides (a) methods of making an oxide layer (e.g., a dielectric layer) based on titanium oxide, to suppress the formation of anatase-phase titanium oxide and (b) related devices and structures. A metal-insulator-metal (“MIM”) stack is formed using an ozone pretreatment process of a bottom electrode (or other substrate) followed by an ALD process to form a TiO2 dielectric, rooted in the use of an amide-containing precursor. Following the ALD process, an oxidizing anneal process is applied in a manner is hot enough to heal defects in the TiO2 dielectric and reduce interface states between TiO2 and electrode; the anneal temperature is selected so as to not be so hot as to disrupt BEL surface roughness. Further process variants may include doping the titanium oxide, pedestal heating during the ALD process to 275-300 degrees Celsius, use of platinum or ruthenium for the BEL, and plural reagent pulses of ozone for each ALD process cycle.
    Type: Application
    Filed: May 4, 2011
    Publication date: August 25, 2011
    Applicant: INTERMOLECULAR, INC.
    Inventors: Hanhong Chen, Pragati Kumar, Sunil Shanker, Edward Haywood, Sandra Malhotra, Imran Hashim, Nobi Fuchigami, Prashant Phatak, Monica Mathur
  • Patent number: 7968452
    Abstract: This disclosure provides (a) methods of making an oxide layer (e.g., a dielectric layer) based on titanium oxide, to suppress the formation of anatase-phase titanium oxide and (b) related devices and structures. A metal-insulator-metal (“MIM”) stack is formed using an ozone pretreatment process of a bottom electrode (or other substrate) followed by an ALD process to form a TiO2 dielectric, rooted in the use of an amide-containing precursor. Following the ALD process, an oxidizing anneal process is applied in a manner is hot enough to heal defects in the TiO2 dielectric and reduce interface states between TiO2 and electrode; the anneal temperature is selected so as to not be so hot as to disrupt BEL surface roughness. Further process variants may include doping the titanium oxide, pedestal heating during the ALD process to 275-300 degrees Celsius, use of platinum or ruthenium for the BEL, and plural reagent pulses of ozone for each ALD process cycle.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: June 28, 2011
    Assignee: Intermolecular, Inc.
    Inventors: Hanhong Chen, Pragati Kumar, Sunil Shanker, Edward Haywood, Sandra Malhotra, Imran Hashim, Nobi Fuchigami, Prashant Phatak, Monica Mathur
  • Publication number: 20100330269
    Abstract: This disclosure provides (a) methods of making an oxide layer (e.g., a dielectric layer) based on titanium oxide, to suppress the formation of anatase-phase titanium oxide and (b) related devices and structures. A metal-insulator-metal (“MIM”) stack is formed using an ozone pretreatment process of a bottom electrode (or other substrate) followed by an ALD process to form a TiO2 dielectric, rooted in the use of an amide-containing precursor. Following the ALD process, an oxidizing anneal process is applied in a manner is hot enough to heal defects in the TiO2 dielectric and reduce interface states between TiO2 and electrode; the anneal temperature is selected so as to not be so hot as to disrupt BEL surface roughness. Further process variants may include doping the titanium oxide, pedestal heating during the ALD process to 275-300 degrees Celsius, use of platinum or ruthenium for the BEL, and plural reagent pulses of ozone for each ALD process cycle.
    Type: Application
    Filed: June 30, 2009
    Publication date: December 30, 2010
    Inventors: Hanhong Chen, Pragati Kumar, Sunil Shanker, Edward Haywood, Sandra Malhotra, Imran Hashim, Nobi Fuchigami, Prashant Phatak, Monica Mathur