Patents by Inventor Stacey F. Bent
Stacey F. Bent 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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Publication number: 20220367739Abstract: A perovskite-based solar cell comprising a transparent electrode disposed on a buffer layer that protects the perovskite from damage during the deposition of the electrode is disclosed. The buffer material is deposited using either low-temperature atomic-layer deposition, chemical-vapor deposition, or pulsed chemical-vapor deposition. In some embodiments, the perovskite material is operative as an absorption layer in a multi-cell solar-cell structure. In some embodiments, the perovskite material is operative as an absorption layer in a single-junction solar cell structure.Type: ApplicationFiled: March 24, 2022Publication date: November 17, 2022Inventors: Kevin Alexander BUSH, Axel F. PALMSTROM, Michael David MC GEHEE, Stacey F. BENT
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Publication number: 20220136106Abstract: Advanced precursors for selective atomic layer deposition (ALD) of aluminum oxide (Al2O3) using self-assembled monolayers (SAM) are provided. Area selective atomic layer deposition (AS-ALD) is a highly sought-after strategy for the fabrication of next-generation electronics. Embodiments described herein provide a process of selective ALD of Al2O3 that achieves an excellent selectivity between an SAM-coated surface and non-coated surface by adopting one of several novel ALD precursors. Some embodiments further optimize process parameters (e.g., growth temperature, precursor partial pressure, precursor dosing time, purging time, reactant dosing time, and number of cycles) to further improve selectivity of the ALD precursor.Type: ApplicationFiled: November 1, 2021Publication date: May 5, 2022Inventors: Il-Kwon Oh, Stacey F. Bent
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Publication number: 20220139703Abstract: Improved selective atomic layer deposition of metal oxides is provided that has large-ligand (i.e., molecular weight >20) metal precursors. A small molecule inhibitor on non-growth surfaces is used to distinguish growth surfaces from non-growth surfaces. This approach does not rely on formation of a self-assembled monolayer on the non-growth surfaces.Type: ApplicationFiled: October 29, 2021Publication date: May 5, 2022Inventors: Josiah Yarbrough, Il-Kwon Oh, Stacey F. Bent
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Patent number: 11296244Abstract: A perovskite-based solar cell comprising a transparent electrode disposed on a buffer layer that protects the perovskite from damage during the deposition of the electrode is disclosed. The buffer material is deposited using either low-temperature atomic-layer deposition, chemical-vapor deposition, or pulsed chemical-vapor deposition. In some embodiments, the perovskite material is operative as an absorption layer in a multi-cell solar-cell structure. In some embodiments, the perovskite material is operative as an absorption layer in a single junction solar cell structure.Type: GrantFiled: September 15, 2017Date of Patent: April 5, 2022Assignee: The Board of Trustees of the Leland Stanford Junior UniversityInventors: Kevin Alexander Bush, Axel F Palmstrom, Michael David McGehee, Stacey F Bent
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Publication number: 20190221690Abstract: A perovskite-based solar cell comprising a transparent electrode disposed on a buffer layer that protects the perovskite from damage during the deposition of the electrode is disclosed. The buffer material is deposited using either low-temperature atomic-layer deposition, chemical-vapor deposition, or pulsed chemical-vapor deposition. In some embodiments, the perovskite material is operative as an absorption layer in a multi-cell solar-cell structure. In some embodiments, the perovskite material is operative as an absorption layer in a single junction solar cell structure.Type: ApplicationFiled: September 15, 2017Publication date: July 18, 2019Inventors: Kevin Alexander BUSH, Axel F PALMSTROM, Michael David MC GEHEE, Stacey F BENT
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Patent number: 8821968Abstract: A method of fabricating a layer-structured catalysts at the electrode/electrolyte interface of a fuel cell is provided. The method includes providing a substrate, depositing an electrolyte layer on the substrate, depositing a catalyst bonding layer to the electrolyte layer, depositing a catalyst layer to the catalyst bonding layer, and depositing a microstructure stabilizing layer to the catalyst layer, where the bonding layer improves adhesion of the catalyst onto the electrolyte. The catalyst and a current collector is a porous catalyst and a fully dense current collector, or a fully dense catalyst and a fully dense current collector structure layer. A nano-island catalyst and current collector structure layer is deposited over the catalyst and current collector or over the bonding layer, which is deposited over the electrolyte layer. The fuel cell can be hydrogen-fueled solid oxide, solid oxide with hydrocarbons, solid sensor, solid acid, polymer electrolyte or direct methanol.Type: GrantFiled: October 31, 2008Date of Patent: September 2, 2014Assignees: The Board of Trustees of the Leland Stanford Junior University, Honda Motor Co., LtdInventors: Xirong Jiang, Xu Tian, Friedrich B. Prinz, Stacey F. Bent, Joon Hyung Shim, Masayuki Sugawara, Hong Huang
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Patent number: 8802483Abstract: A method of forming a self-organized nanostructured solar cell is provided. The method includes depositing a semiconductor film on a substrate, where the semiconductor film includes a mixture of at least two constituents, then activating the semiconductor film during or after the deposition. Here, the activated semiconductor film self-assembles into an organized nanostructure geometry on the substrate, where the organized nanostructure includes a first structure of the at least one constituent having a first polarity and a second structure of the at least one constituent having a second polarity opposite to the first polarity. Further, the invention includes depositing a contact on a top surface of the organized nanostructure geometry.Type: GrantFiled: June 11, 2009Date of Patent: August 12, 2014Assignee: The Board of Trustees of the Leland Stanford Junior UniversityInventors: Stacey F. Bent, Bruce M. Clemens
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Patent number: 8084087Abstract: A method of growing spatially-separated and size-controlled particles on substrate surfaces is provided. The method utilizes chemical modification of the substrate surface, an atomic layer deposition (ALD) system, providing a modified layer to the substrate surface and providing an ALD material for nanoparticle deposition. The method induces a Volmer-Weber growth method, where islands of the nanoparticles are formed on the surface. The modified layer controls a number of nucleation sites on the surface, where controlling the number of ALD cycles limits an amount of deposited the material for discrete the nanoparticles.Type: GrantFiled: February 14, 2008Date of Patent: December 27, 2011Assignees: The Board of Trustees of the Leland Stanford Junior University, Honda Motor Co., Ltd.Inventors: Stacey F. Bent, Rong Chen, Xirong Jiang, Marja N. Mullings, Yuji Saito
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Publication number: 20090314342Abstract: A method of forming a self-organized nanostructured solar cell is provided. The method includes depositing a semiconductor film on a substrate, where the semiconductor film includes a mixture of at least two constituents, then activating the semiconductor film during or after the deposition. Here, the activated semiconductor film self-assembles into an organized nanostructure geometry on the substrate, where the organized nanostructure includes a first structure of the at least one constituent having a first polarity and a second structure of the at least one constituent having a second polarity opposite to the first polarity. Further, the invention includes depositing a contact on a top surface of the organized nanostructure geometry.Type: ApplicationFiled: June 11, 2009Publication date: December 24, 2009Inventors: Stacey F. Bent, Bruce M. Clemens
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Publication number: 20090218311Abstract: A method of fabricating a layer-structured catalysts at the electrode/electrolyte interface of a fuel cell is provided. The method includes providing a substrate, depositing an electrolyte layer on the substrate, depositing a catalyst bonding layer to the electrolyte layer, depositing a catalyst layer to the catalyst bonding layer, and depositing a microstructure stabilizing layer to the catalyst layer, where the bonding layer improves adhesion of the catalyst onto the electrolyte. The catalyst and a current collector is a porous catalyst and a fully dense current collector, or a fully dense catalyst and a fully dense current collector structure layer. A nano-island catalyst and current collector structure layer is deposited over the catalyst and current collector or over the bonding layer, which is deposited over the electrolyte layer. The fuel cell can be hydrogen-fueled solid oxide, solid oxide with hydrocarbons, solid sensor, solid acid, polymer electrolyte or direct methanol.Type: ApplicationFiled: October 31, 2008Publication date: September 3, 2009Inventors: Xirong Jiang, Xu Tian, Friedrich B. Prinz, Stacey F. Bent, Joon Hyung Shim, Masayuki Sugawara, Hong Huang
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Publication number: 20080274282Abstract: A method of growing spatially-separated and size-controlled particles on substrate surfaces is provided. The method utilizes chemical modification of the substrate surface, an atomic layer deposition (ALD) system, providing a modified layer to the substrate surface and providing an ALD material for nanoparticle deposition. The method induces a Volmer-Weber growth method, where islands of the nanoparticles are formed on the surface. The modified layer controls a number of nucleation sites on the surface, where controlling the number of ALD cycles limits an amount of deposited the material for discrete the nanoparticles.Type: ApplicationFiled: February 14, 2008Publication date: November 6, 2008Inventors: Stacey F. Bent, Rong Chen, Xirong Jiang, Marja N. Mullings, Yuji Saito
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Patent number: 7147865Abstract: Devices and methods are provided for administering a fluid to a neuronal site. The device comprises a reservoir, an aperture in fluid connection to the reservoir, and electrical means for moving to the fluid to or through the aperture. The electrical means may take the form of electroosmotic force, piezoelectric movement of a diaphragm or electrolysis of a solution. The electrical means may be external to the host, implanted in the host or may be photodiodes activated by light, particularly where the neuronal site is associated with the retina.Type: GrantFiled: November 13, 2003Date of Patent: December 12, 2006Assignee: The Board of Trustees of the Leland Stanford UniversityInventors: Harvey A. Fishman, David Bloom, Stacey F. Bent, Mark C. Peterman, Jaan Noolandi, Neville Mehenti
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Patent number: 7001608Abstract: The invention provides microfabricated devices and methods for directing the growth of a cell process to form an artificial synapse. The devices are called artificial synapse chips. The artificial synapse comprises a nanofabricated aperture (about 50–100 nm in size) that connects the cell process to a chemical or electrical means of neuronal excitation. Such an aperture width mimics the length scales of a natural synapse and thus emphasizes the localized spatial relationship between a neuron and a stimulation source. The invention further provides devices and methods for regenerating a nerve fiber into an electrode. The invention thus provides a regeneration electrode that uses a novel neural interface for stimulation and that uses novel surface methods for directing neuronal growth making possible in vivo connection of the devices to neural circuitry in a retina and other anatomical locations.Type: GrantFiled: June 27, 2002Date of Patent: February 21, 2006Assignee: The Board of Trustees of the Lealand Stanford Junior UniversityInventors: Harvey A. Fishman, Mark Blumenkranz, Stacey F. Bent, David M. Bloom, Mark C. Peterman
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Publication number: 20040224002Abstract: Devices and methods are provided for administering a fluid to a neuronal site. The device comprises a reservoir, an aperture in fluid connection to the reservoir, and electrical means for moving to the fluid to or through the aperture. The electrical means may take the form of electroosmotic force, piezoelectric movement of a diaphragm or electrolysis of a solution. The electrical means may be external to the host, implanted in the host or may be photodiodes activated by light, particularly where the neuronal site is associated with the retina.Type: ApplicationFiled: November 13, 2003Publication date: November 11, 2004Inventors: Harvey A. Fishman, David M. Bloom, Stacey F. Bent, Mark C. Peterman, Jaan Noolandi, Neville Mehenti
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Publication number: 20030032946Abstract: The invention provides microfabricated devices and methods for directing the growth of a cell process to form an artificial synapse. The devices are called artificial synapse chips. The artificial synapse comprises a nanofabricated aperture (about 50-100 nm in size) that connects the cell process to a chemical or electrical means of neuronal excitation. Such an aperture width mimics the length scales of a natural synapse and thus emphasizes the localized spatial relationship between a neuron and a stimulation source. The invention further provides devices and methods for regenerating a nerve fiber into an electrode. The invention thus provides a regeneration electrode that uses a novel neural interface for stimulation and that uses novel surface methods for directing neuronal growth making possible in vivo connection of the devices to neural circuitry in a retina and other anatomical locations.Type: ApplicationFiled: June 27, 2002Publication date: February 13, 2003Inventors: Harvey A. Fishman, Mark Blumenkranz, Stacey F. Bent, David M. Bloom, Mark C. Peterman, Jonathan M. Ziebarth, Christina Lee, Theodore Leng