Patents by Inventor Shesh Mani Pandey

Shesh Mani Pandey 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: 9419082
    Abstract: P-type metal-oxide semiconductor field-effect transistors (pMOSFET's), semiconductor devices comprising the pMOSFET's, and methods of forming pMOSFET's are provided. The pMOSFET's include a silicon-germanium (SiGe) film that has a lower interface in contact with a semiconductor substrate and an upper surface, and the SiGe film has a graded boron doping profile where boron content increases upwardly over a majority of the width of boron-doped SiGe film between the lower interface of the SiGe film and the upper surface of the SiGe film.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: August 16, 2016
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Shiv Kumar Mishra, Zhiqing Li, Scott Beasor, Shesh Mani Pandey
  • Patent number: 9406752
    Abstract: A method of forming a source/drain region with an abrupt, vertical and conformal junction and the resulting device are disclosed. Embodiments include forming a gate electrode over and perpendicular to a semiconductor fin; forming first spacers on opposite sides of the gate electrode; forming second spacers on opposite sides of the fin; forming a cavity in the fin adjacent the first spacers, between the second spacers; partially epitaxially growing source/drain regions in each cavity; implanting a first dopant into the partially grown source/drain regions with an optional RTA thereafter; epitaxially growing a remainder of the source/drain regions in the cavities, in situ doped with a second dopant; and implanting a third dopant in the source/drain regions.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: August 2, 2016
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Peijie Feng, Jianwei Peng, Yanxiang Liu, Shesh Mani Pandey, Francis Benistant
  • Patent number: 9397162
    Abstract: A method of forming a source/drain region with abrupt vertical and conformal junction and the resulting device are disclosed. Embodiments include forming a first mask over a fin of a first polarity FET and source/drain regions of the first polarity FET; forming spacers on opposite sides of a fin of a second polarity FET, the second polarity being opposite the first polarity, on each side of a gate electrode; implanting a first dopant into the fin of the second polarity FET; etching a cavity in the fin of the second polarity FET on each side of the gate electrode; removing the first mask; performing rapid thermal anneal (RTA); epitaxially growing a source/drain region of the second polarity FET in each cavity; forming a second mask over the fin of the first polarity FET and source/drain regions of the first polarity FET; and implanting a second dopant in the source/drain regions of the second polarity FET.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: July 19, 2016
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Peijie Feng, Yanxiang Liu, Shesh Mani Pandey, Jianwei Peng, Francis Benistant
  • Publication number: 20160190251
    Abstract: A method of forming a source/drain region with an abrupt, vertical and conformal junction and the resulting device are disclosed. Embodiments include forming a gate electrode over and perpendicular to a semiconductor fin; forming first spacers on opposite sides of the gate electrode; forming second spacers on opposite sides of the fin; forming a cavity in the fin adjacent the first spacers, between the second spacers; partially epitaxially growing source/drain regions in each cavity; implanting a first dopant into the partially grown source/drain regions with an optional RTA thereafter; epitaxially growing a remainder of the source/drain regions in the cavities, in situ doped with a second dopant; and implanting a third dopant in the source/drain regions.
    Type: Application
    Filed: April 2, 2015
    Publication date: June 30, 2016
    Inventors: Peijie FENG, Jianwei PENG, Yanxiang LIU, Shesh Mani PANDEY, Francis BENISTANT
  • Publication number: 20160190252
    Abstract: A method of forming a source/drain region with abrupt vertical and conformal junction and the resulting device are disclosed. Embodiments include forming a first mask over a fin of a first polarity FET and source/drain regions of the first polarity FET; forming spacers on opposite sides of a fin of a second polarity FET, the second polarity being opposite the first polarity, on each side of a gate electrode; implanting a first dopant into the fin of the second polarity FET; etching a cavity in the fin of the second polarity FET on each side of the gate electrode; removing the first mask; performing rapid thermal anneal (RTA); epitaxially growing a source/drain region of the second polarity FET in each cavity; forming a second mask over the fin of the first polarity FET and source/drain regions of the first polarity FET; and implanting a second dopant in the source/drain regions of the second polarity FET.
    Type: Application
    Filed: April 6, 2015
    Publication date: June 30, 2016
    Inventors: Peijie FENG, Yanxiang LIU, Shesh Mani PANDEY, Jianwei PENG, Francis BENISTANT
  • Publication number: 20160043190
    Abstract: Semiconductor structures and methods of fabrication are provided, with one or both of an extended source-to-channel interface or an extended drain-to-channel interface. The fabrication method includes, for instance, recessing a semiconductor material to form a cavity adjacent to a channel region of a semiconductor structure being fabricated, the recessing forming a first cavity surface and a second cavity surface within the cavity; and implanting one or more dopants into the semiconductor material through the first cavity surface to define an implanted region within the semiconductor material, and form an extended channel interface, the extended channel interface including, in part, an interface of the implanted region within the semiconductor material to the channel region of the semiconductor structure. In one embodiment, the semiconductor structure with the extended channel interface is a FinFET.
    Type: Application
    Filed: August 8, 2014
    Publication date: February 11, 2016
    Applicant: GLOBALFOUNDRIES Inc.
    Inventors: Edmund Kenneth BANGHART, Mitsuhiro TOGO, Shesh Mani PANDEY
  • Publication number: 20150311293
    Abstract: P-type metal-oxide semiconductor field-effect transistors (pMOSFET's), semiconductor devices comprising the pMOSFET's, and methods of forming pMOSFET's are provided. The pMOSFET's include a silicon-germanium (SiGe) film that has a lower interface in contact with a semiconductor substrate and an upper surface, and the SiGe film has a graded boron doping profile where boron content increases upwardly over a majority of the width of boron-doped SiGe film between the lower interface of the SiGe film and the upper surface of the SiGe film.
    Type: Application
    Filed: April 23, 2014
    Publication date: October 29, 2015
    Applicant: GLOBALFOUNDRIES INC.
    Inventors: Shiv Kumar MISHRA, Zhiqing LI, Scott BEASOR, Shesh Mani PANDEY
  • Patent number: 9087860
    Abstract: Methods are provided for fabricating a fin-type field effect transistor(s), having a channel region within a fin. The methods include: establishing a protective material above an upper surface of the fin, and an isolation material adjacent to at least one sidewall of the fin, the isolation material being recessed down from the upper surface of the fin, for instance, for approximately a height of the channel region within the fin; and providing a punch-through stop dopant region within the fin below the channel region, the providing including implanting a punch-through stop dopant into the isolation material and laterally diffusing the punch-through stop dopant from the isolation material into the fin to form the punch-through stop region within the fin beneath the channel region.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: July 21, 2015
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Edmund Kenneth Banghart, Yanxiang Liu, Shesh Mani Pandey
  • Patent number: 8946039
    Abstract: Aspects of the present invention relate to an approach for implanting and forming a polysilicon resistor with a single implant dose. Specifically, a mask having a set of openings is formed over a resistor surface. The set of openings are typically formed in a column-row arrangement according to a predetermined pattern. Forming the mask in this manner allows the resistor surface to have multiple regions/zones. A first region is defined by the set of openings in the mask, and a second region is defined by the remaining portions of the mask. The resistor is then subjected to a single implant dose via the openings. Implanting the resistor in this manner allows the resistor to have multiple resistance values (i.e., a first resistance value in the first region, and a second resistance value in the second region).
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: February 3, 2015
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Jagar Singh, Shesh Mani Pandey, Roderick Miller, Nam Sung Kim
  • Patent number: 8828834
    Abstract: One illustrative method disclosed herein includes forming a plurality of layers of material above a semiconducting substrate, wherein the plurality of layers of material will comprise a gate structure for a transistor, performing a fluorine ion implantation process to implant fluorine ions into at least one of the plurality of layers of material, performing at least one ion implantation process to implant one of a P-type dopant material or an N-type dopant material into the substrate to form source/drain regions for the transistor, and performing an anneal process after the fluorine ion implantation process and the at least one ion implantation process have been performed.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: September 9, 2014
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Shesh Mani Pandey, Shiang Yang Ong, Jan Hoentschel
  • Publication number: 20130330900
    Abstract: One illustrative method disclosed herein includes forming a plurality of layers of material above a semiconducting substrate, wherein the plurality of layers of material will comprise a gate structure for a transistor, performing a fluorine ion implantation process to implant fluorine ions into at least one of the plurality of layers of material, performing at least one ion implantation process to implant one of a P-type dopant material or an N-type dopant material into the substrate to form source/drain regions for the transistor, and performing an anneal process after the fluorine ion implantation process and the at least one ion implantation process have been performed.
    Type: Application
    Filed: June 12, 2012
    Publication date: December 12, 2013
    Applicant: GLOBALFOUNDRIES INC.
    Inventors: Shesh Mani Pandey, Shiang Yang Ong, Jan Hoentschel
  • Publication number: 20130244388
    Abstract: Methods for fabricating integrated circuits are provided. In an embodiment, a method for fabricating an integrated circuit includes forming a gate stack on a semiconductor substrate. In the method, a first halo implantation is performed on the semiconductor substrate with a first dose of dopant ions to form first halo regions therein. A second halo spacer is formed around the gate stack. Then a second halo implantation is performed on the semiconductor substrate with a second dose of dopant ions to form second halo regions therein.
    Type: Application
    Filed: March 15, 2012
    Publication date: September 19, 2013
    Applicant: GLOBALFOUNDRIES INC.
    Inventors: Thilo Scheiper, Stefan Flachowsky, Shesh Mani Pandey
  • Patent number: 8153537
    Abstract: There is provided a method for fabricating a semiconductor device comprising the formation of a first device in the first device region, the first device comprising first diffusion regions. A stressor layer covering the substrate in the first device region and the first device is subsequently formed, the stressor layer having a first stress value. A laser anneal to memorize at least a portion of the first stress value in the first device is carried out followed by an activation anneal after the laser anneal to activate dopants in the first diffusion regions.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: April 10, 2012
    Assignee: Globalfoundries Singapore Pte. Ltd.
    Inventors: Sai Hooi Yeong, Tao Wang, Shesh Mani Pandey, Chia Ching Yeo, Ying Keung Leung, Elgin Kiok Boone Quek
  • Publication number: 20120070971
    Abstract: There is provided a method for fabricating a semiconductor device comprising the formation of a first device in the first device region, the first device comprising first diffusion regions. A stressor layer covering the substrate in the first device region and the first device is subsequently formed, the stressor layer having a first stress value. A laser anneal to memorize at least a portion of the first stress value in the first device is carried out followed by an activation anneal after the laser anneal to activate dopants in the first diffusion regions.
    Type: Application
    Filed: September 19, 2011
    Publication date: March 22, 2012
    Applicant: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Sai Hooi YEONG, Tao WANG, Shesh Mani Pandey, Chia Ching YEO, Ying Keung LEUNG, Elgin Kiok Boone QUEK