Patents by Inventor Mandyam Sriram
Mandyam Sriram 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).
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Patent number: 12230688Abstract: A metal gate stack on a substrate comprises: an interfacial layer on the substrate; a high-? metal oxide layer on the interfacial layer, the high-? metal oxide layer comprising a dipole region adjacent to the interfacial layer, the dipole region comprising niobium (Nb); a high-? metal oxide capping layer on the high-? metal oxide layer; a positive metal-oxide-semiconductor (PMOS) work function material above the high-? metal oxide capping layer; and a gate electrode above the PMOS work function material. The dipole region is formed by driving Nb species of a Nb-based film into the high-? metal oxide layer to form a dipole region.Type: GrantFiled: February 8, 2022Date of Patent: February 18, 2025Assignee: Applied Materials, Inc.Inventors: Yong Yang, Srinivas Gandikota, Steven C. H. Hung, Mandyam Sriram, Jacqueline S. Wrench, Yixiong Yang
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Patent number: 12114488Abstract: Methods of forming memory devices are described. A molybdenum silicide nucleation layer is formed, and the substrate is soaked in a titanium precursor prior to a bulk molybdenum gap fill process. In other embodiments, a molybdenum silicide film is formed in a first process cycle and a second process cycle is performed where the substrate is exposed to a titanium precursor. In further embodiments, a substrate having at least one feature thereon is exposed to a first titanium precursor and a nitrogen-containing reactant. The substrate is then soaked in a second titanium precursor, and then is exposed to a first molybdenum precursor followed by exposure to a silane to form a molybdenum silicide layer on a surface of the substrate.Type: GrantFiled: May 5, 2021Date of Patent: October 8, 2024Assignee: Applied Materials, Inc.Inventors: Yong Yang, Kunal Bhatnagar, Srinivas Gandikota, Seshadri Ganguli, Jose Alexandro Romero, Mandyam Sriram, Mohith Verghese, Jacqueline S. Wrench, Yixiong Yang
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Patent number: 12062545Abstract: Methods of forming metallic tungsten films selectively on a conductive surface relative to a dielectric surface are described. A substrate is exposed to a first process condition to deposit a tungsten-containing film that is substrate free of tungsten metal. The tungsten-containing film is then converted to a metallic tungsten film by exposure to a second process condition.Type: GrantFiled: June 4, 2021Date of Patent: August 13, 2024Assignee: Applied Materials, Inc.Inventors: Ilanit Fisher, Chi-Chou Lin, Kedi Wu, Wen Ting Chen, Shih Chung Chen, Srinivas Gandikota, Mandyam Sriram, Chenfei Shen, Naomi Yoshida, He Ren
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Patent number: 12051734Abstract: Metal gate stacks and integrated methods of forming metal gate stacks are disclosed. Some embodiments comprise NbN as a PMOS work function material at a thickness in a range of greater than or equal to 5 ? to less than or equal to 50 ?. The PMOS work function material comprising NbN has an effective work function of greater than or equal to 4.75 eV. Some embodiments comprise HfO2 as a high-? metal oxide layer. Some embodiments provide improved PMOS bandedge performance evidenced by improved flatband voltage. Some embodiments exclude transition metal niobium nitride materials as work function materials.Type: GrantFiled: December 7, 2022Date of Patent: July 30, 2024Assignee: Applied Materials, Inc.Inventors: Srinivas Gandikota, Steven C. H. Hung, Mandyam Sriram, Jacqueline S. Wrench, Yixiong Yang, Yong Yang
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Publication number: 20240218502Abstract: Embodiments of the disclosure are directed to methods of depositing a molybdenum film directly on a substrate surface (e.g., a low-? dielectric material) by exposing the substrate surface to a molybdenum-containing precursor and an organosilane reducing agent at a temperature of less than or equal to 450° C. The molybdenum-containing precursor comprises one or more of molybdenum pentachloride (MoCl5), molybdenum dioxide dichloride (MoO2Cl2), molybdenum oxytetrachloride (MoOCl4), molybdenum hexafluoride (MoF6), molybdenum hexacarbonyl, bis(tert-butylimido)-bis(dimethylamido)molybdenum, or bis(ethylbenzene) molybdenum. The organosilane reducing agent comprises trimethylsilyl compounds, such as 1,4-bis(trimethylsilyl)-2-methyl-2,5-cyclohexadiene.Type: ApplicationFiled: January 4, 2023Publication date: July 4, 2024Applicant: Applied Materials, Inc.Inventors: Tuerxun Ailihumaer, Srinivas Gandikota, Yixiong Yang, Yogesh Sharma, Ashutosh Agarwal, Mandyam Sriram
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Publication number: 20240204061Abstract: Methods of manufacturing and processing semiconductor devices (i.e., electronic devices) are described. Embodiments of the disclosure advantageously provide methods to reduce the resistance of the work function layer of an electronic device, as well as using a low resistivity metal for filling the gate.Type: ApplicationFiled: December 19, 2022Publication date: June 20, 2024Inventors: Srinivas Gandikota, Yixiong Yang, Yongjing Lin, Tuerxun Ailihumaer, Tengzhou Ma, Yuanhua Zheng, Zhihui Liu, Shih Chung Chen, Janardhan Devrajan, Yi Xu, Yu Lei, Mandyam Sriram
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Publication number: 20240170254Abstract: Embodiments of the disclosure are directed to PEALD batch processing chambers. Some embodiments are directed to processing chambers having one or more inductively coupled plasma (ICP) coils electrically connected to at least one RF power source. Some embodiments are directed to processing chambers having a wafer cassette comprising a plurality of platforms, each platform configured to support at least one wafer for processing, and one or more RF power sources electrically connected to the plurality of platforms in the wafer cassette. In some embodiments, the plurality of platforms have a first set of electrodes having a first polarity and a second set of electrodes having a second polarity, and one or more RF power sources electrically connected to the plurality of platforms in the wafer cassette.Type: ApplicationFiled: November 21, 2022Publication date: May 23, 2024Applicant: Applied Materials, Inc.Inventors: Jianming Fu, Tza-Jing Gung, Sanjeev Baluja, Haitao Wang, Mandyam Sriram, Srinivas Gandikota, Steven V. Sansoni
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Publication number: 20240141492Abstract: Susceptor assemblies having a susceptor base with a plurality of pockets formed in a surface thereof are described. Each of the pockets has a pocket edge angle in the range of 30 to 75° and a pocket edge radius in the range of 0.40±0.05 mm to 1.20 mm±0.05 mm. The pockets have a raised central region and an outer region that is deeper than the raised central region, relative to the surface of the surface of the susceptor base.Type: ApplicationFiled: March 23, 2023Publication date: May 2, 2024Applicant: Applied Materials, Inc.Inventors: Prasanth Narayanan, Vijayabhaskara Venkatagiriyappa, Keiichi Tanaka, Ning Li, Robert B. Moore, Robert C. Linke, Mandyam Sriram, Mario D. Silvetti, Michael Racine, Tae Kwang Lee
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Publication number: 20240102157Abstract: Embodiments of the disclosure are directed to methods of depositing a molybdenum film directly on a substrate surface (e.g., a low-K dielectric material) by exposing the substrate surface to a molybdenum-containing precursor and a plasma at a temperature of less than or equal to 400° C. The molybdenum-containing precursor comprises one or more of molybdenum pentachloride (MoCl5), molybdenum dioxide dichloride (MoO2Cl2), molybdenum oxytetrachloride (MoOCl4), molybdenum hexacarbonyl, bis(tert-butylimido)-bis(dimethylamido)molybdenum, or bis(ethylbenzene) molybdenum. The plasma comprises one or more of hydrogen (H2), nitrogen (N2), or a silane (SixHy). In some embodiments, when the molybdenum-containing precursor comprises molybdenum hexafluoride (MoF6), the plasma does not include hydrogen (H2).Type: ApplicationFiled: September 22, 2022Publication date: March 28, 2024Applicant: Applied Materials, Inc.Inventors: TUERXUN AILIHUMAER, Srinivas Gandikota, Yixiong Yang, Yogesh Sharma, Ashutosh Agarwal, Mandyam Sriram
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Publication number: 20240096688Abstract: Apparatus and methods to process one or more wafers are described. A plurality of process stations are arranged in a circular configuration around a rotational axis. A support assembly with a rotatable center base defining a rotational axis, at least two support arms extending from the center base and heaters on each of the support arms is positioned adjacent the processing stations so that the heaters can be moved amongst the various process stations to perform one or more process condition.Type: ApplicationFiled: November 29, 2023Publication date: March 21, 2024Applicant: Applied Materials, Inc.Inventors: Michael Robert Rice, Joseph AuBuchon, Sanjeev Baluja, Mandyam Sriram
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Patent number: 11923172Abstract: Processing chambers with a plurality of processing stations and individual wafer support surfaces are described. The processing stations and wafer support surfaces are arranged so that there is an equal number of processing stations and heaters. An RF generator is connected to a first electrode in a first station and a second electrode in a second station. A bottom RF path is formed by a connection between a first support surface and a second support surface.Type: GrantFiled: February 8, 2022Date of Patent: March 5, 2024Assignee: APPLIED MATERIALS, INC.Inventors: Hari Ponnekanti, Tsutomu Tanaka, Mandyam Sriram, Dmitry A. Dzilno, Sanjeev Baluja, Mario D. Silvetti
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Patent number: 11894257Abstract: Apparatus and methods to process one or more wafers are described. A plurality of process stations are arranged in a circular configuration around a rotational axis. A support assembly with a rotatable center base defining a rotational axis, at least two support arms extending from the center base and heaters on each of the support arms is positioned adjacent the processing stations so that the heaters can be moved amongst the various process stations to perform one or more process condition.Type: GrantFiled: October 26, 2018Date of Patent: February 6, 2024Assignee: Applied Materials, Inc.Inventors: Michael Rice, Joseph AuBuchon, Sanjeev Baluja, Mandyam Sriram
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Patent number: 11887856Abstract: 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.Type: GrantFiled: June 14, 2021Date of Patent: January 30, 2024Assignee: APPLIED MATERIALS, INC.Inventors: Kelvin Chan, Yihong Chen, Jared Ahmad Lee, Kevin Griffin, Srinivas Gandikota, Joseph Yudovsky, Mandyam Sriram
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Publication number: 20230366094Abstract: An apparatus for depositing film stacks in-situ (i.e., without a vacuum break or air exposure) are described. In one example, a plasma-enhanced chemical vapor deposition apparatus configured to deposit a plurality of film layers on a substrate without exposing the substrate to a vacuum break between film deposition phases, is provided. The apparatus includes a process chamber, a plasma source and a controller configured to control the plasma source to generate reactant radicals using a particular reactant gas mixture during the particular deposition phase, and sustain the plasma during a transition from the particular reactant gas mixture supplied during the particular deposition phase to a different reactant gas mixture supplied during a different deposition phase.Type: ApplicationFiled: July 13, 2023Publication date: November 16, 2023Inventors: Jason Dirk Haverkamp, Pramod Subramonium, Joseph L. Womack, Dong Niu, Keith Fox, John B. Alexy, Patrick G. Breiling, Jennifer L. Petraglia, Mandyam A. Sriram, George Andrew Antonelli, Bart J. van Schravendijk
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Publication number: 20230313378Abstract: Substrate support, substrate support assemblies and process chambers comprising same are described. The substrate support has a thermally conductive body with a top surface, a bottom surface and an outer edge, and a plurality of long edge purge channel outlet opening at the outer edge of the thermally conductive body. The substrate support is configured to support a substrate to be processed on a top surface of the substrate support. The top surface of the thermally conductive body may have a ceramic coating. Each of the plurality of purge channel outlet is in fluid communication with a long edge purge channel. The long edge purge channel is coated with a long edge purge channel coating. A substrate support assembly includes the substrate support and the support post coupled to the substrate support. The processing chamber include a chamber body and the substrate support within the chamber body.Type: ApplicationFiled: March 31, 2022Publication date: October 5, 2023Applicant: Applied Materials, Inc.Inventors: Yongjing Lin, Lei Zhou, Muhannad Mustafa, Shih Chung Chen, Zhihui Liu, Chi-Chou Lin, Bin Cao, Janardhan Devrajan, Mario D. Silvetti, Mandyam Sriram
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Publication number: 20230307216Abstract: Processing chambers comprising a chamber body, a remote plasma source (RPS) outside the chamber body, a first connection line between the remote plasma source and the interior volume of the chamber body through the top wall and a second connection line between the remote plasma source and the interior volume through the sidewall of the chamber body. Methods of cleaning a processing chamber comprising flowing an etchant gas through the RPS into the chamber body, followed by a flow recovery gas through the RPS into the chamber body through both the first connection line and second connection line.Type: ApplicationFiled: October 18, 2022Publication date: September 28, 2023Applicant: Applied Materials, Inc.Inventors: Prasanth Narayanan, Shrihari Sampathkumar, Keiichi Tanaka, Mario D. Sanchez, Muhammad M. Rasheed, Mandyam Sriram
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Publication number: 20230295803Abstract: Methods of forming metal-containing films for electronic devices (e.g., logic devices and/or memory devices) and methods for reducing equivalent oxide thickness (EOT) penalty in electronic devices are disclosed. The methods comprise exposing a substrate surface to a metal precursor, such as titanium chloride (TiCl4), a reducing agent, such as a cyclic 1,4-diene, and a reactant, ammonia (NH3), either simultaneously, partially simultaneously or separately and sequentially to form the metal-containing film.Type: ApplicationFiled: April 14, 2023Publication date: September 21, 2023Applicant: Applied Materials, Inc.Inventors: Haoming Yan, Shih Chung Chen, Mandyam Sriram, EunKee Hong, Janardhan Devrajan, Lakmal C. Kalutarage, Yongjing Lin, Lisa Michelle Mandrell, Arkaprava Dan
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Publication number: 20230245925Abstract: A method for forming a metal nitride layer on a substrate includes exposing a substrate having features formed therein to a first deposition gas mixture including metal source material in a processing chamber to deposit metal source material in the features, supplying a first purge gas mixture into the processing chamber to remove excess metal source material and reaction byproducts from the processing chamber, exposing the substrate to a second deposition gas mixture including a nitride source compound in the processing chamber to form no more than one monolayer of metal nitride, supplying a second purge gas mixture into the processing chamber to remove excess nitride source compound and reaction byproducts from the processing chamber, and exposing the substrate to plasma using a microwave plasma source.Type: ApplicationFiled: March 24, 2023Publication date: August 3, 2023Inventors: Wenyi LIU, Wei TANG, Srinivas GANDIKOTA, Yixiong YANG, Yong WU, Jianqiu GUO, Arkaprava DAN, Mandyam SRIRAM
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Publication number: 20230146837Abstract: Pedestal heater radiators, pedestal assemblies including the pedestal heater radiators and methods of decreasing deposition non-uniformity are described. The pedestal heater radiator has a first radiator body and a second radiator body with different emissivities. The first radiator body and second radiator body are sized and positioned to decrease the heat loss differential between sides of the pedestal.Type: ApplicationFiled: November 9, 2021Publication date: May 11, 2023Applicant: Applied Materials, Inc.Inventors: Muhannad Mustafa, Mario D. Silvetti, Mandyam Sriram, Sanjeev Baluja
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Patent number: 11646226Abstract: A method for forming a metal nitride layer on a substrate includes exposing a substrate having features formed therein to a first deposition gas mixture including metal source material in a processing chamber to deposit metal source material in the features, supplying a first purge gas mixture into the processing chamber to remove excess metal source material and reaction byproducts from the processing chamber, exposing the substrate to a second deposition gas mixture including a nitride source compound in the processing chamber to form no more than one monolayer of metal nitride, supplying a second purge gas mixture into the processing chamber to remove excess nitride source compound and reaction byproducts from the processing chamber, and exposing the substrate to plasma using a microwave plasma source.Type: GrantFiled: May 11, 2020Date of Patent: May 9, 2023Assignee: Applied Materials, Inc.Inventors: Wenyi Liu, Wei Tang, Srinivas Gandikota, Yixiong Yang, Yong Wu, Jianqiu Guo, Arkaprava Dan, Mandyam Sriram