Cheng-Chieh Chao

from San Jose, CA

Cheng-Chieh Chao Phones & Addresses

  • San Jose, CA
  • Santa Clara, CA

Us Patents

  • Irradiation Assisted Nucleation Of Quantum Confinements By Atomic Layer Deposition

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  • US Patent:
    8551868, Oct 8, 2013
  • Filed:
    Mar 24, 2011
  • Appl. No.:
    13/065582
  • Inventors:
    Timothy P. Holme - Menlo Park CA, US
    Andrei Iancu - Stanford CA, US
    Hee Joon Jung - Palo Alto CA, US
    Michael C Langston - Los Altos Hills CA, US
    Munekazu Motoyama - Kumamoto, JP
    Friedrich B. Prinz - Woodside CA, US
    Takane Usui - Palo Alto CA, US
    Hitoshi Iwadate - Palo Alto CA, US
    Neil Dasgupta - San Francisco CA, US
    Cheng-Chieh Chao - Mountain View CA, US
  • Assignee:
    The Board of Trustees of the Leland Stanford Junior Universit - Palo Alto CA
    Honda Patents & Technologies North America, LLC - Raymond OH
  • International Classification:
    H01L 21/36
  • US Classification:
    438478, 438487, 257 9, 257 14, 257E33008, 257E29069, 257E21089, 977755, 977762, 977773, 977774
  • Abstract:
    A method of fabricating quantum confinements is provided. The method includes depositing, using a deposition apparatus, a material layer on a substrate, where the depositing includes irradiating the layer, before a cycle, during a cycle, and/or after a cycle of the deposition to alter nucleation of quantum confinements in the material layer to control a size and/or a shape of the quantum confinements. The quantum confinements can include quantum wells, nanowires, or quantum dots. The irradiation can be in-situ or ex-situ with respect to the deposition apparatus. The irradiation can include irradiation by photons, electrons, or ions. The deposition is can include atomic layer deposition, chemical vapor deposition, MOCVD, molecular beam epitaxy, evaporation, sputtering, or pulsed-laser deposition.
  • Electrode/Electrolyte Interfaces In Solid Oxide Fuel Cells

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  • US Patent:
    20090011314, Jan 8, 2009
  • Filed:
    Jul 3, 2008
  • Appl. No.:
    12/217503
  • Inventors:
    Cheng-Chieh Chao - Palo Alto CA, US
    Timothy P. Holme - Stanford CA, US
    Friedrich B. Prinz - Woodside CA, US
    Masayuki Sugawara - Palo Alto CA, US
  • International Classification:
    H01M 8/10
  • US Classification:
    429 30
  • Abstract:
    A solid oxide fuel cell (SOFC) with reduced electrical resistance and greater vacancy density control is provided. The SOFC includes an interfacial layer deposited, preferably by atomic layer deposition (ALD), between an electrode layer and an electrolyte layer. The interfacial layer includes an ion-conductive material. By use of ALD, the interfacial layer can have a very small thickness and can include layered structures of alternating materials. The interfacial layer can also include doping gradient structures of doped ion-conductive materials. Ultra-thin film platinum layers for high current density and cermet layers at the electrode/electrolyte interface are also provided.
  • Closed-End Nanotube Arrays As An Electrolyte Of A Solid Oxide Fuel Cell

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  • US Patent:
    20100183948, Jul 22, 2010
  • Filed:
    Dec 7, 2009
  • Appl. No.:
    12/653111
  • Inventors:
    Cheng-Chieh Chao - Stanford CA, US
    Turgut M. Gür - Palo Alto CA, US
    Munekazu Motoyama - Kumamoto, JP
    Friedrich B. Prinz - Woodside CA, US
    Joon Hyung Shim - Cupertino CA, US
    Joong Sun Park - Stanford CA, US
  • International Classification:
    H01M 8/10
  • US Classification:
    429495
  • Abstract:
    The present invention provides solid oxide fuel cell that includes an electrolyte membrane, a first electrode layer, and a second electrode layer, where the electrolyte membrane is disposed between the first electrode layer and the second electrode layer. The electrolyte membrane includes a solid electrolyte structure having at least two solid electrolyte nanoscopic closed-end tubes, where an open-ended base of each solid electrolyte nanoscopic closed-end tube is connected by a solid electrolyte layer.
  • Solid-Oxide Fuel Cells With Concentric Laminating Electrolytes In A Nanoporous Membrane

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  • US Patent:
    20110027694, Feb 3, 2011
  • Filed:
    Jul 26, 2010
  • Appl. No.:
    12/804705
  • Inventors:
    Cheng-Chieh Chao - Stanford CA, US
    Friedrich B. Prinz - Woodside CA, US
    Turgut M. Gür - Palo Alto CA, US
    Joon Hyung Shim - Seoul, KR
  • International Classification:
    H01M 8/10
  • US Classification:
    429496, 429495
  • Abstract:
    A solid oxide fuel cell with an electrolyte membrane having one or more layers with interfaces perpendicular to the surfaces of the membrane is provided. The layers can be deposited on vertical walls of holes in a nanoporous membrane until the layers fully fill the holes, thereby forming superlattices in the holes. The final shape of the superlattices in this example will be concentric, laminating layers as seen in a top view looking down on the membrane. According to one aspect, conventional electrodes can be deposited on both sides of the membrane for current collection and surface charge transfer reactions.
  • Nano-Patterned Electrolytes In Solid Oxide Fuel Cells

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  • US Patent:
    20110076589, Mar 31, 2011
  • Filed:
    Sep 14, 2010
  • Appl. No.:
    12/807777
  • Inventors:
    Cheng-Chieh Chao - Stanford CA, US
    Yi Cui - Stanford CA, US
    Ching-Mei Hsu - Stanford CA, US
    Young Beom Kim - Stanford CA, US
    Friedrich B. Prinz - Woodside CA, US
  • International Classification:
    H01M 8/10
  • US Classification:
    429480
  • Abstract:
    A nano-patterned membrane electrode assembly (MEA) is provided, which includes an electrolyte membrane layer having a three-dimensional close-packed array of hexagonal-pyramids, a first porous electrode layer, disposed on a top surface of the electrolyte membrane layer that conforms to a top surface-shape of the three-dimensional close-packed array of hexagonal-pyramids, and a second porous electrode layer disposed on a bottom surface of said electrolyte membrane layer that conforms to a bottom surface-shape of the three-dimensional close-packed array of hexagonal-pyramids, where a freestanding nano-patterned MEA is provided.

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