High-throughput Solution Processing of Large Scale Graphene for Device Applications
- Technology Benefits
- High Throughput Largest area graphene Stable and robust production of graphene sheets Reproducible
- Technology Application
- High capacity hard drives Replace Silicon in computing as a Single electron transistors: Computers, wireless devices, PDA, mobile phones, medical devices Spintronic devices Photovoltiacs Flexible and transparent electronics
- Detailed Technology Description
- Researchers at UCLA have developed a novel solution process for the large-scale production of single layered graphene. The resulting graphene sheets have the largest area yet reported by an order of magnitude, resulting in significantly easier processing. Field effect devices were also fabricated by conventional photolithography that displayed currents that were 3 orders of magnitude higher than any every observed for chemically produced graphene. This versatile technique reproducibly produces large graphene sheets, enabling a vast array of applications.
- Supplementary Information
- Patent Number: US20100273060A1
Application Number: US2010747087A
Inventor: Yang, Yang | Kaner, Richard B. | Tung, Chun-Chih | Allen, Matthew J.
Priority Date: 14 Jan 2008
Priority Number: US20100273060A1
Application Date: 9 Jun 2010
Publication Date: 28 Oct 2010
IPC Current: C01B003102 | B29C004300 | H01B000104 | H01M0004583
US Class: 4292318 | 252502 | 264105 | 423445R | 977742 | 977750
Assignee Applicant: The Regents of the University of California
Title: HIGH-THROUGHPUT SOLUTION PROCESSING OF LARGE SCALE GRAPHENE AND DEVICE APPLICATIONS
Usefulness: HIGH-THROUGHPUT SOLUTION PROCESSING OF LARGE SCALE GRAPHENE AND DEVICE APPLICATIONS
Summary: Method for producing carbon macro-molecular structures used for an electrical, electronic or electro-optic device having capacitor, supercapacitor, diode, light emitting diode, photodiode, transistor, photovoltaic cell, chemical sensor, biosensor, battery, display device, field emission display, or assembly; composite material; hydrogen storage device; and electrode (all claimed).
Novelty: Production of carbon macro-molecular structures comprises dissolving graphitic material in solvent to provide suspension of carbon-based macro-molecular structures in solvent
- Industry
- Optics
- Sub Category
- LED/OLED
- Application No.
- 9105403
- Others
-
State of Development
This process has been tested and reproduced, and field effect devices have been fabricated.
Background
Graphene was first isolated about 4 years ago, and has since received considerable buzz for potential use in electronics. Sheets of graphene, or nanofabric, are similar to unrolled nanotubes. Electrons can travel over 100 times faster in graphene than in silicon, making these sheets suitable for next generation, fast-switching transistors. While theoretical studies of graphene promote excitement, real prototypes have been far less forthcoming. Tremendous efforts to develop a scalable production method have been made, however bulk processing has not been achieved. Current production methods are time and labor intensive, and produce little yield. Furthermore when small fragments are fabricated, they are not large enough for computer wafer design. These limitations have, thus far, limited the commercialization and integration of graphene into electronics.
Additional Technologies by these Inventors
- Solution-Deposition of CIGS Solar Cell by Spray-Coating
- Three-Terminal Organic Memory Devices
- Bottom Insulating Gate Vertical Organic Transistor
- Rewritable Nano-Surface Organic Electrical Bistable Devices
- Organic Electrical Bistable Devices Fabricated by Solution Processing
- Organic Bistable Device and Organic Memory Cells
- Solution Synthesis and Deposition of Kesterite Copper Zinc Tin Chalcogenide Films
- Polarizing Photovoltaic Device and its Application in Liquid Crystal Displays and Tandem Solar Cells
- Conjugated Polymers with Selenium Substituted Diketopyrrolopyrrole Unit for Electronics Devices
- Multiple Donor/Acceptor Bulk Heterojunction Solar Cells
- Au Nanoparticles Doped Polyaniline Nanofiber Non-Volatile Memory Device
- Titanium Oxide as the Window Layer for Metal Chalcogenide Photovoltaic Devices
- Novel Polymers For Polymer Solar Cells, Transistors, And Sensors
- Silver Nanowire-Indium Tin Oxide Nanoparticle As A Transparent Conductor For Optoelectronic Devices
- Design Of Semi-Transparent, Transparent, Stacked Or Top-Illuminated Organic Photovoltaic Devices
- Amorphous Silicon And Polymer Hybrid Tandem Photovoltaic Cell
- Efficient And Stable Of Perovskite Solar Cells With All Solution Processed Metal Oxide Transporting Layers
- A Bi-Functional Lewis Base Additive For Microscopic Homogeneity In Perovskite Solar Cells
Tech ID/UC Case
20393/2008-422-0
Related Cases
2008-422-0
- *Abstract
-
UCLA scientists have developed a novel, high-throughput processing technique that produces large sheets of graphene nanofabric. This innovation will enable large scale integration of graphene as a substitute for silicon in electronics.
- *IP Issue Date
- Aug 11, 2015
- *Principal Investigator
-
Name: Matthew Allen
Department:
Name: Richard Kaner
Department:
Name: Chun-Chih Tung
Department:
Name: Yang Yang
Department:
- Country/Region
- USA
