Preparation method of graphene thin film field emission material
A graphene thin film and field emission technology, applied in electrolytic coating, electrophoretic plating, coating, etc., can solve the problems that hinder the application of graphene and lack of preparation methods, and achieve low cost, good controllability, and easy scale-up Effect
Inactive Publication Date: 2011-04-20
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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Abstract
The invention relates to the field of field emission electronic materials, in particular to a preparation method of a graphene thin film field emission material. The method comprises the following steps of: (1) uniformly dispersing graphene and metal cation inorganic salt capable of providing charges into an low polar organic solvent or directly dispersing the graphene into an aqueous solution of an ionic surfactant by adopting an ultrasonic method to prepare a stable graphene solution with charges; and (2) orderly depositing the graphene with the charges on a conductive substrate under the action of an external electric field by utilizing an electrophoretic deposition method to prepare a graphene film. The field emission material of the invention is an even and compact graphene film rich in graphene sheets perpendicularly to the plane. The method has the advantages of simple operation, low cost and good controllability and is suitable for preparing large-area graphene films, and the excellent field emission characteristics of the graphene film lay the foundation for applying the graphene film as a cold cathode material to high-performance field emission displays, and the like.
Application Domain
Electrophoretic coatings
Technology Topic
Cvd grapheneElectrophoretic deposition +11
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PUM
Property | Measurement | Unit |
Horizontal size | 500.0 | nm |
Thickness | 1.0 | µm |
Horizontal size | 3.0 ~ 5.0 | µm |
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