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Graphene heat dissipating structure

United States Patent

9,721,867
August 1, 2017
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
Various technologies presented herein relate to forming one or more heat dissipating structures (e.g., heat spreaders and/or heat sinks) on a substrate, wherein the substrate forms part of an electronic component. The heat dissipating structures are formed from graphene, with advantage being taken of the high thermal conductivity of graphene. The graphene (e.g., in flake form) is attached to a diazonium molecule, and further, the diazonium molecule is utilized to attach the graphene to material forming the substrate. A surface of the substrate is treated to comprise oxide-containing regions and also oxide-free regions having underlying silicon exposed. The diazonium molecule attaches to the oxide-free regions, wherein the diazonium molecule bonds (e.g., covalently) to the exposed silicon. Attachment of the diazonium plus graphene molecule is optionally repeated to enable formation of a heat dissipating structure of a required height.
Washburn; Cody M. (Albuquerque, NM), Lambert; Timothy N. (Albuquerque, NM), Wheeler; David R. (Albuquerque, NM), Rodenbeck; Christopher T. (Alexandria, VA), Railkar; Tarak A. (Plano, TX)
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM), Qorvo US, Inc. (Greensboro, NC)
14/ 662,091
March 18, 2015
STATEMENT OF GOVERNMENTAL INTEREST This invention was developed under contract DE-AC04-94AL85000 between Sandia Corporation and the U.S. Department of Energy. The U.S. Government has certain rights in this invention.