Patents by Inventor Ralf Illgen
Ralf Illgen 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: 10176859Abstract: The present disclosure provides storage elements, such as storage transistors, wherein at least one storage mechanism is provided on the basis of a ferroelectric material formed in the buried insulating layer of an SOI transistor architecture. In further illustrative embodiments, one further storage mechanism is implemented in the gate electrode structure, thereby providing increased overall information density. In some illustrative embodiments, the storage mechanism in the gate electrode structure is provided in the form of a ferroelectric material.Type: GrantFiled: May 3, 2017Date of Patent: January 8, 2019Assignee: GLOBALFOUNDRIES Inc.Inventors: Stefan Duenkel, Ralf Illgen, Ralf Richter, Soeren Jansen
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Publication number: 20180322912Abstract: The present disclosure provides storage elements, such as storage transistors, wherein at least one storage mechanism is provided on the basis of a ferroelectric material formed in the buried insulating layer of an SOI transistor architecture. In further illustrative embodiments, one further storage mechanism is implemented in the gate electrode structure, thereby providing increased overall information density. In some illustrative embodiments, the storage mechanism in the gate electrode structure is provided in the form of a ferroelectric material.Type: ApplicationFiled: May 3, 2017Publication date: November 8, 2018Inventors: Stefan Duenkel, Ralf Illgen, Ralf Richter, Soeren Jansen
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Patent number: 10056376Abstract: A semiconductor device includes a semiconductor substrate and a fin positioned above the semiconductor substrate, wherein the fin includes a semiconductor material. Additionally, a ferroelectric high-k spacer covers sidewall surfaces of the fin and a non-ferroelectric high-k material layer covers the ferroelectric high-k spacer and the fin, wherein a portion of the non-ferroelectric high-k material layer is positioned on and in direct contact with the semiconductor material at the upper surface of the fin.Type: GrantFiled: August 16, 2016Date of Patent: August 21, 2018Assignee: GLOBALFOUNDRIES Inc.Inventors: Stefan Flachowsky, Ralf Illgen, Jan Hoentschel
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Patent number: 9966466Abstract: A semiconductor-on-insulator wafer includes a support substrate, an electrically insulating layer over the support substrate and a semiconductor layer over the electrically insulating layer. A semiconductor structure includes a transistor. The transistor includes an electrically insulating layer including a piezoelectric material over a support substrate, a semiconductor layer over the electrically insulating layer, a source region, a channel region and a drain region in the semiconductor layer, a gate structure over the channel region, a first electrode and a second electrode. The first electrode and the second electrode are provided at laterally opposite sides of the electrically insulating layer. The first and second electrodes are electrically insulated from the semiconductor layer and configured for applying a voltage to the piezoelectric material of the electrically insulating layer. The piezoelectric material creates a strain at least in the channel region in response to the voltage applied thereto.Type: GrantFiled: August 8, 2016Date of Patent: May 8, 2018Assignee: GLOBALFOUNDRIES Inc.Inventors: Stefan Flachowsky, Ralf Illgen
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Patent number: 9899417Abstract: A semiconductor structure includes a semiconductor substrate, a layer of electrically insulating material above the semiconductor substrate, and a layer of semiconductor material above the layer of electrically insulating material. A first transistor includes a first source region, a first drain region, and a first channel region formed in the semiconductor substrate, a first gate insulation layer positioned above the first channel region, and an electrically conductive first gate electrode, wherein the first gate insulation layer includes a first portion of the electrically insulating material. A second transistor includes a second source region, a second drain region, and a second channel region formed in the layer of semiconductor material, a second gate insulation layer positioned above the second channel region, and an electrically conductive second gate electrode, wherein a second portion of the layer of electrically insulating material is positioned below the second channel region.Type: GrantFiled: March 23, 2017Date of Patent: February 20, 2018Assignee: GLOBALFOUNDRIES Inc.Inventors: Stefan Flachowsky, Ralf Illgen
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Publication number: 20180040731Abstract: A semiconductor-on-insulator wafer includes a support substrate, an electrically insulating layer over the support substrate and a semiconductor layer over the electrically insulating layer. A semiconductor structure includes a transistor. The transistor includes an electrically insulating layer including a piezoelectric material over a support substrate, a semiconductor layer over the electrically insulating layer, a source region, a channel region and a drain region in the semiconductor layer, a gate structure over the channel region, a first electrode and a second electrode. The first electrode and the second electrode are provided at laterally opposite sides of the electrically insulating layer. The first and second electrodes are electrically insulated from the semiconductor layer and configured for applying a voltage to the piezoelectric material of the electrically insulating layer. The piezoelectric material creates a strain at least in the channel region in response to the voltage applied thereto.Type: ApplicationFiled: August 8, 2016Publication date: February 8, 2018Inventors: Stefan Flachowsky, Ralf Illgen
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Publication number: 20170338350Abstract: The present disclosure provides a semiconductor device including a substrate, a gate structure formed over the substrate, the gate structure including a first ferroelectric material having a first remanent polarization and a second ferroelectric material having a second remanent polarization, the first remanent polarization being smaller than the second remanent polarization, and source and drain regions formed in the substrate, the source and drain regions being laterally separated by a channel region extending along a length direction below the gate structure, wherein the first ferroelectric material and the second ferroelectric material are stacked in a plane parallel to an upper surface of the substrate.Type: ApplicationFiled: August 11, 2016Publication date: November 23, 2017Inventors: Stefan Flachowsky, Ralf Illgen
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Publication number: 20170200743Abstract: A semiconductor structure includes a semiconductor substrate, a layer of electrically insulating material above the semiconductor substrate, and a layer of semiconductor material above the layer of electrically insulating material. A first transistor includes a first source region, a first drain region, and a first channel region formed in the semiconductor substrate, a first gate insulation layer positioned above the first channel region, and an electrically conductive first gate electrode, wherein the first gate insulation layer includes a first portion of the electrically insulating material. A second transistor includes a second source region, a second drain region, and a second channel region formed in the layer of semiconductor material, a second gate insulation layer positioned above the second channel region, and an electrically conductive second gate electrode, wherein a second portion of the layer of electrically insulating material is positioned below the second channel region.Type: ApplicationFiled: March 23, 2017Publication date: July 13, 2017Inventors: Stefan Flachowsky, Ralf Illgen
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Patent number: 9685457Abstract: A method includes providing a semiconductor-on-insulator structure including a semiconductor substrate, a layer of electrically insulating material over the semiconductor substrate and a layer of semiconductor material over the layer of electrically insulating material. A first transistor is formed. The formation of the first transistor includes forming a dummy gate structure over the layer of semiconductor material, forming a source region of the first transistor and a drain region of the first transistor in portions of the semiconductor substrate adjacent the dummy gate structure, forming an electrically insulating structure annularly enclosing the dummy gate structure and performing a replacement gate process. The replacement gate process includes removing the dummy gate structure and a portion of the layer of semiconductor material below the dummy gate structure, wherein a recess is formed in the electrically insulating structure. The recess is filled with an electrically conductive material.Type: GrantFiled: July 22, 2015Date of Patent: June 20, 2017Assignee: GLOBALFOUNDRIES Inc.Inventors: Stefan Flachowsky, Ralf Illgen
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Patent number: 9583240Abstract: 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: GrantFiled: August 26, 2014Date of Patent: February 28, 2017Assignee: GLOBALFOUNDRIES Inc.Inventors: Stefan Flachowsky, Ralf Illgen, Jan Hoentschel
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Publication number: 20170025442Abstract: A method includes providing a semiconductor-on-insulator structure including a semiconductor substrate, a layer of electrically insulating material over the semiconductor substrate and a layer of semiconductor material over the layer of electrically insulating material. A first transistor is formed. The formation of the first transistor includes forming a dummy gate structure over the layer of semiconductor material, forming a source region of the first transistor and a drain region of the first transistor in portions of the semiconductor substrate adjacent the dummy gate structure, forming an electrically insulating structure annularly enclosing the dummy gate structure and performing a replacement gate process. The replacement gate process includes removing the dummy gate structure and a portion of the layer of semiconductor material below the dummy gate structure, wherein a recess is formed in the electrically insulating structure. The recess is filled with an electrically conductive material.Type: ApplicationFiled: July 22, 2015Publication date: January 26, 2017Inventors: Stefan Flachowsky, Ralf Illgen
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Publication number: 20160358915Abstract: A semiconductor device includes a semiconductor substrate and a fin positioned above the semiconductor substrate, wherein the fin includes a semiconductor material. Additionally, a ferroelectric high-k spacer covers sidewall surfaces of the fin and a non-ferroelectric high-k material layer covers the ferroelectric high-k spacer and the fin, wherein a portion of the non-ferroelectric high-k material layer is positioned on and in direct contact with the semiconductor material at the upper surface of the fin.Type: ApplicationFiled: August 16, 2016Publication date: December 8, 2016Inventors: Stefan Flachowsky, Ralf Illgen, Jan Hoentschel
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Patent number: 9449972Abstract: The present disclosure provides, in a first aspect, a semiconductor device, including a semiconductor substrate and a gate structure formed over the semiconductor substrate, wherein the gate structure comprises a fin and a ferroelectric high-k material formed at least over sidewall surfaces of the fin. Herein, a first thickness defined by a thickness of the ferroelectric high-k material formed over sidewalls of the fin is substantially greater than a second thickness defined by a thickness of the ferroelectric high-k material formed over an upper surface of the fin.Type: GrantFiled: March 6, 2015Date of Patent: September 20, 2016Assignee: GLOBALFOUNDRIES Inc.Inventors: Stefan Flachowsky, Ralf Illgen, Jan Hoentschel
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Publication number: 20160260714Abstract: The present disclosure provides, in a first aspect, a semiconductor device, including a semiconductor substrate and a gate structure formed over the semiconductor substrate, wherein the gate structure comprises a fin and a ferroelectric high-k material formed at least over sidewall surfaces of the fin. Herein, a first thickness defined by a thickness of the ferroelectric high-k material formed over sidewalls of the fin is substantially greater than a second thickness defined by a thickness of the ferroelectric high-k material formed over an upper surface of the fin.Type: ApplicationFiled: March 6, 2015Publication date: September 8, 2016Inventors: Stefan Flachowsky, Ralf Illgen, Jan Hoentschel
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Publication number: 20160071954Abstract: A methodology for robust post-gate spacer processing that exhibits reduced variability and marginalities, and the resulting device are disclosed. Embodiments may include forming an oxide layer over a gate stack, forming a nitride layer over the oxide layer, partially removing the nitride layer to expose a portion of the oxide layer, forming a protective nitride layer directly over the partially exposed oxide layer and a remaining portion of the nitride layer, removing the protective nitride layer from the gate stack, and at least partially removing the remaining portion of the nitride layer.Type: ApplicationFiled: September 4, 2014Publication date: March 10, 2016Inventors: Jan HOENTSCHEL, Sven BEYER, Ralf ILLGEN, Alexander EBERMANN
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Publication number: 20160064123Abstract: 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: ApplicationFiled: August 26, 2014Publication date: March 3, 2016Inventors: Stefan Flachowsky, Ralf Illgen, Jan Hoentschel
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Patent number: 9269714Abstract: 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: GrantFiled: June 10, 2013Date of Patent: February 23, 2016Assignee: GLOBALFOUNDRIES Inc.Inventors: Stefan Flachowsky, Ralf Illgen, Gerd Zschaezsch
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Patent number: 9224840Abstract: 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: GrantFiled: July 10, 2012Date of Patent: December 29, 2015Assignee: GLOBALFOUNDRIES, INC.Inventors: Stefan Flachowsky, Ralf Illgen, Jan Hoentschel
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Publication number: 20150214121Abstract: Methods for fabricating integrated circuits are provided. In an embodiment, a method for fabricating an integrated circuit includes providing an ultrathin body fully depleted silicon-on-insulator substrate. The method forms a temporary gate structure over the substrate and forms lightly doped source/drain extension areas around the gate structure. Further, the method includes performing an annealing process on the lightly doped source/drain extension areas. Outdiffusion from the lightly doped source/drain extensions is less than 5 nm during the annealing process. The method includes forming a strain region around the gate structure.Type: ApplicationFiled: April 2, 2015Publication date: July 30, 2015Inventors: Ralf Illgen, Stefan Flachowsky
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Patent number: 9023713Abstract: Integrated circuits and methods for fabricating integrated circuits are provided. In an embodiment, a method for fabricating an integrated circuit includes providing an ultrathin body (UTB) fully depleted silicon-on-insulator (FDSOI) substrate. A PFET temporary gate structure and an NFET temporary gate structure are formed on the substrate. The method implants ions to form lightly doped active areas around the gate structures. A diffusionless annealing process is performed on the active areas. Further, a compressive strain region is formed around the PFET gate structure and a tensile strain region is formed around the NFET gate structure.Type: GrantFiled: June 22, 2012Date of Patent: May 5, 2015Assignee: GLOBALFOUNDRIES, Inc.Inventors: Ralf Illgen, Stefan Flachowsky