Patents by Inventor Stefan Flachowsky

Stefan Flachowsky 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: 9368513
    Abstract: A semiconductor device includes a semiconductor material positioned above a substrate and a gate structure positioned above a surface of the semiconductor material, the gate structure covering a non-planar surface portion of the surface. A sidewall spacer is positioned adjacent to the gate structure and includes first dopants having one of an N-type and a P-type conductivity, wherein the sidewall spacer covers an entire sidewall surface of the gate structure and partially covers the surface of the semiconductor material. Source/drain extension regions that include the first dopants are positioned within the non-planar surface portion and in alignment with the sidewall spacer, wherein a concentration of the first dopants within a portion of the sidewall spacer proximate the non-planar surface portion substantially corresponds to a concentration of the first dopants within the source/drain extension regions proximate the non-planar surface portion.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: June 14, 2016
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Gerd Zschätzsch, Stefan Flachowsky, Dominic Thurmer
  • Patent number: 9368506
    Abstract: Integrated circuits and methods for fabricating integrated circuits are provided. In an exemplary embodiment, an integrated circuit includes a semiconductor substrate doped with a first conductivity-determining impurity. The semiconductor substrate has formed therein a first well doped with a second conductivity-determining impurity that is different from the first conductivity-determining impurity, a second well, formed within the first well, and doped with the first conductivity-determining impurity, and a third well spaced apart from the first and second wells and doped with the first conductivity-determining impurity. The integrated circuit further includes a floating gate structure formed over the semiconductor substrate.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: June 14, 2016
    Assignee: GLOBALFOUNDRIES, INC.
    Inventors: Ricardo Pablo Mikalo, Stefan Flachowsky
  • Publication number: 20160163815
    Abstract: The present disclosure provides in one aspect for a semiconductor device structure which may be formed by providing source/drain regions within a semiconductor substrate in alignment with a gate structure formed over the semiconductor substrate, wherein the gate structure has a gate electrode structure, a first sidewall spacer and a second sidewall spacer, the first sidewall spacer covering sidewall surfaces of the gate electrode structure and the sidewall spacer being formed on the first sidewall spacer. Furthermore, forming the semiconductor device structure may include removing the second sidewall spacer so as to expose the first sidewall spacer, forming a third sidewall spacer on a portion of the first sidewall spacer such that the first sidewall spacer is partially exposed, and forming silicide regions in alignment with the third sidewall spacer in the source/drain regions.
    Type: Application
    Filed: April 23, 2015
    Publication date: June 9, 2016
    Inventors: Jan Hoentschel, Stefan Flachowsky, Ralf Richter, Peter Javorka
  • Patent number: 9349734
    Abstract: The present disclosure provides a method of forming a semiconductor device structure with selectively fabricating semiconductor device structures having fully silicided (FuSi) gates and partially silicided gates. In aspects of the present disclosure, a semiconductor device structure with a first semiconductor device and a second semiconductor device is provided, wherein each of the first and second semiconductor devices includes a gate structure over an active region, each of the gate structures having a gate electrode material and a gate dielectric material. The gate electrode material of the first semiconductor device is recessed, resulting in a recessed first gate electrode material which is fully silicided during a subsequent silicidation process. On the gate electrode material of the second semiconductor device, a silicide portion is formed during the silicidation process.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: May 24, 2016
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Peter Javorka, Stefan Flachowsky, Gerd Zschätzsch
  • Publication number: 20160141393
    Abstract: A method includes forming a plurality of fins in a semiconductor substrate using a common patterning process. A conductive layer is formed above the plurality of fins. A mask is formed above the conductive layer. The conductive layer is etched using the mask to define trenches in the conductive layer. A first insulating layer is formed above the conductive layer and in the trenches. First and second contacts are formed connected to respective ends of the conductive layer.
    Type: Application
    Filed: January 21, 2016
    Publication date: May 19, 2016
    Inventors: Jan Hoentschel, Stefan Flachowsky, Andreas Kurz, Sven Beyer, Wolfgang Buchholtz
  • Patent number: 9343374
    Abstract: Forming a poly-Si device including pulling back spacers prior to silicidation and the resulting device are provided. Embodiments include forming two poly-Si gate stacks on an upper surface of a substrate; forming a hardmask over the second poly-Si gate stack; forming eSiGe with a silicon cap at opposite sides of the first poly-Si gate stack; removing the hardmask; forming nitride spacers at opposite sides of each of the poly-Si gate stacks; forming deep source/drain regions at opposite sides of the second poly-Si gate stack; forming a wet gap fill layer around each of the poly-Si gate stacks to a thickness less than the poly-Si gate stack height from the substrate's upper surface; removing an upper portion of the nitride spacers down to the height of the wet gap fill layer followed by removing the wet gap fill layer; and performing silicidation of the deep source/drain regions and the silicon cap.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: May 17, 2016
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Jan Hoentschel, Peter Javorka, Stefan Flachowsky, Ralf Richter
  • Publication number: 20160118483
    Abstract: The present disclosure provides, in various aspects of the present disclosure, a semiconductor device which includes a semiconductor stack disposed over a surface of a substrate and a gate structure partially formed over an upper surface and two opposing sidewall surfaces of the semiconductor stack, wherein the semiconductor stack includes an alternating arrangement of at least two layers formed by a first semiconductor material and a second semiconductor material which is different from the first semiconductor material.
    Type: Application
    Filed: October 23, 2014
    Publication date: April 28, 2016
    Inventors: Stefan Flachowsky, Jan Hoentschel, Ralf Richter, Peter Javorka
  • Patent number: 9324831
    Abstract: Methods for forming gates without spacers and the resulting devices are disclosed. Embodiments may include forming a channel layer on a substrate; forming a dummy gate on the channel layer; forming an interlayer dielectric (ILD) on the channel layer and surrounding the dummy gate; forming a trench within the ILD and the channel layer by removing the dummy gate and the channel layer below the dummy gate; forming an un-doped channel region at the bottom of the trench; and forming a gate above the un-doped channel region within the trench.
    Type: Grant
    Filed: August 18, 2014
    Date of Patent: April 26, 2016
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Gerd Zschätzsch, Stefan Flachowsky, Jan Hoentschel
  • Publication number: 20160071947
    Abstract: A method disclosed herein includes providing a substrate including a semiconductor material. A first area of the substrate is recessed relative to a second area of the substrate, and an active region of a first transistor is formed in the recessed area. An active region of a second transistor is formed in the second area of the substrate. First and second dummy gate structures are formed over the active regions of the first transistor and the second transistor, respectively. At least a portion of the first and second dummy gate structures is replaced with at least a portion of a gate structure of the first transistor and the second transistor, respectively. The gate structure of the first transistor includes a ferroelectric material, and the gate structure of the second transistor does not include a ferroelectric material.
    Type: Application
    Filed: September 10, 2014
    Publication date: March 10, 2016
    Inventors: Maciej Wiatr, Stefan Flachowsky
  • Publication number: 20160064123
    Abstract: The present disclosure relates to a semiconductor structure comprising a positive temperature coefficient thermistor and a negative temperature coefficient thermistor, connected to each other in parallel by means of connecting elements which are configured such that the resistance resulting from the parallel connection is substantially stable in a predetermined temperature range, and to a corresponding manufacturing method.
    Type: Application
    Filed: August 26, 2014
    Publication date: March 3, 2016
    Inventors: Stefan Flachowsky, Ralf Illgen, Jan Hoentschel
  • Publication number: 20160064382
    Abstract: The present disclosure provides a method of forming a semiconductor device structure with selectively fabricating semiconductor device structures having fully silicided (FuSi) gates and partially silicided gates. In aspects of the present disclosure, a semiconductor device structure with a first semiconductor device and a second semiconductor device is provided, wherein each of the first and second semiconductor devices includes a gate structure over an active region, each of the gate structures having a gate electrode material and a gate dielectric material. The gate electrode material of the first semiconductor device is recessed, resulting in a recessed first gate electrode material which is fully silicided during a subsequent silicidation process. On the gate electrode material of the second semiconductor device, a silicide portion is formed during the silicidation process.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 3, 2016
    Inventors: Peter Javorka, Stefan Flachowsky, Gerd Zschätzsch
  • Publication number: 20160064515
    Abstract: One exemplary embodiment provides a method of making an integrated circuit. The method includes forming a dummy gate structure above a semiconductor substrate, etching an exposed semiconductor substrate outside the dummy gate structure, depositing silicon oxide over the dummy gate structure and the semiconductor substrate to form a silicon oxide layer, etching source and drain contact vias through the silicon oxide layer, implanting source and drain dopants through the source and drain contact vias, removing the dummy gate structure, forming a final gate structure, etching substantially all of the silicon oxide layer, and depositing an ultra low K dielectric to form an ultra low K dielectric layer.
    Type: Application
    Filed: August 28, 2014
    Publication date: March 3, 2016
    Inventors: Gerd Zschatzsch, Stefan Flachowsky, Jan Hoentschel
  • Publication number: 20160064510
    Abstract: An illustrative device disclosed herein includes a semiconductor substrate. The substrate includes a source region, a drain region and a channel region. The channel region is arranged between the source region and the drain region. A gate insulation layer is provided over the channel region. A floating gate electrode is provided over the gate insulation layer. A layer of a ferroelectric material is provided over the floating gate electrode. A top electrode is provided over the layer of ferroelectric material. A projected area of the top electrode onto a plane that is perpendicular to a thickness direction of the semiconductor substrate is smaller than a projected area of the floating gate electrode onto the plane.
    Type: Application
    Filed: August 26, 2014
    Publication date: March 3, 2016
    Inventors: Johannes Mueller, Stefan Mueller, Stefan Flachowsky
  • Patent number: 9269714
    Abstract: A device includes a substrate, a P-channel transistor and an N-channel transistor. The substrate includes a first layer of a first semiconductor material and a second layer of a second semiconductor material. The first and second semiconductor materials have different crystal lattice constants. The P-channel transistor includes a channel region having a compressive stress in a first portion of the substrate. The channel region of the P-channel transistor includes a portion of the first layer of the first semiconductor material and a portion of the second layer of the second semiconductor material. The N-channel transistor includes a channel region having a tensile stress formed in a second portion of the substrate. The channel region of the N-channel transistor includes a portion of the first layer of the first semiconductor material and a portion of the second layer of the second semiconductor material. Methods of forming the device are also disclosed.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: February 23, 2016
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Stefan Flachowsky, Ralf Illgen, Gerd Zschaezsch
  • Patent number: 9257530
    Abstract: One exemplary embodiment provides a method of making an integrated circuit. The method includes forming a dummy gate structure above a semiconductor substrate, etching an exposed semiconductor substrate outside the dummy gate structure, depositing silicon oxide over the dummy gate structure and the semiconductor substrate to form a silicon oxide layer, etching source and drain contact vias through the silicon oxide layer, implanting source and drain dopants through the source and drain contact vias, removing the dummy gate structure, forming a final gate structure, etching substantially all of the silicon oxide layer, and depositing an ultra low K dielectric to form an ultra low K dielectric layer.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: February 9, 2016
    Assignee: GLOBALFOUNDRIES, INC.
    Inventors: Gerd Zschatzsch, Stefan Flachowsky, Jan Hoentschel
  • Patent number: 9236440
    Abstract: When forming field effect transistors, a common problem is the formation of a Schottky barrier at the interface between a metal thin film in the gate electrode and a semiconductor material, typically polysilicon, formed thereupon. Fully silicided gates are known in the state of the art which may overcome this problem. The claimed method proposes an improved fully silicided gate achieved by forming a gate structure including an additional metal layer between the metal gate layer and the gate semiconductor material. A silicidation process can then be optimized so as to form a lower metal silicide layer comprising the metal of the additional metal layer and an upper metal silicide layer forming an interface with the lower metal silicide layer.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: January 12, 2016
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Roman Boschke, Stefan Flachowsky, Elke Erben
  • Patent number: 9231045
    Abstract: Integrated circuits and methods for fabricating integrated circuits are provided. In an embodiment, an integrated circuit includes a first transistor structure that includes an etch-stop material layer, a first workfunction material layer disposed over the etch-stop material layer, a second workfunction material layer disposed over the first workfunction material layer, and a metal fill material disposed over the second workfunction material layer. The integrated circuit further includes a second transistor structure that includes a layer of the etch-stop material, a layer of the second workfunction material disposed over the etch-stop material layer, and a layer of the metal fill material disposed over the second workfunction material layer. Still further, the integrated circuit includes a resistor structure that includes a layer of the etch-stop material, a layer of the metal fill material disposed over the etch-stop material layer, and a silicon material layer disposed over the metal fill material layer.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: January 5, 2016
    Assignee: GLOBALFOUNDRIES, INC.
    Inventors: Jan Hoentschel, Stefan Flachowsky, Nicolas Sassiat, Ralf Richter
  • Patent number: 9224655
    Abstract: One illustrative method disclosed herein includes the steps of forming a masking layer that covers a P-type transistor and exposes at least a gate cap layer of an N-type transistor, performing a first etching process through the masking layer to remove a portion of the gate cap of the N-type transistor so as to thereby define a reduced thickness gate cap layer for the N-type transistor, removing the masking layer, and performing a common second etching process on the P-type transistor and the N-type transistor that removes a gate cap layer of the P-type transistor and the reduced thickness gate cap of the N-type transistor.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: December 29, 2015
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Peter Javorka, Ralf Richter, Stefan Flachowsky, Jan Hoentschel
  • Patent number: 9224840
    Abstract: A method is disclosed for fabricating an integrated circuit in a replacement-gate process flow utilizing a dummy-gate structure overlying a plurality of fin structures. The method includes removing the dummy-gate structure to form a first void space, depositing a shaper material to fill the first void space, removing a portion of the plurality of fin structures to form a second void space, epitaxially growing a high carrier mobility material to fill the second void space, removing the shaper material to form a third void space, and depositing a replacement metal gate material to fill the third void space.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: December 29, 2015
    Assignee: GLOBALFOUNDRIES, INC.
    Inventors: Stefan Flachowsky, Ralf Illgen, Jan Hoentschel
  • Publication number: 20150372100
    Abstract: Integrated circuits having improved contacts and improved methods for fabricating integrated circuits having contacts are provided. In an embodiment, a method for fabricating an integrated circuit includes providing a semiconductor substrate with a source/drain region. The method deposits an interlayer dielectric material over the semiconductor substrate. Further, the method etches the interlayer dielectric material to form a hole defining an exposed portion of the source/drain region. The method includes forming a contact forming a contact in the hole over the exposed portion of the source/drain region and forming an interconnect in the hole over the contact.
    Type: Application
    Filed: June 19, 2014
    Publication date: December 24, 2015
    Inventors: Gerd Zschätzsch, Stefan Flachowsky, Jan Hoentschel