THE FABRICATION OF GRAPHENE ELECTRODES BY INKJET PRINTING AND ITS TRANSPARENT THIN FILM SPEAKER APPLICATION

摘要

PURPOSE: A graphene electrode manufacturing method using inkjet printing is provided to reduce the manufacturing time and loss of raw materials. CONSTITUTION: A graphite oxide is dispersed in water using a supersonic wave generator and a waterborne graphene oxide nano particle solution capable of being used for a conductive ink for inkjet printing is manufactured. In order to evenly deposit the waterborne graphene oxide nano particle solution on a piezoelectric polymer film, the chemical property of the surface of the piezoelectric polymer film is improved through plasma processing. The waterborne graphene oxide nano particle is injected in a printer head, a graphene oxide thin film is formed by discharging an ink on both surfaces of the piezoelectric polymer film through a printer. The piezoelectric polymer film in which the graphene oxide thin film is formed is placed inside a vapor deposition reactor containing a reducing agent and a graphene electrode is formed by vaporizing the reducing agent below an appropriate temperature in a vacuum. Active noise is removed by adhering a transparent supporting material to a graphene electrode based piezoelectric polymer film. [Reference numerals] (AA) Output(V); (BB) Time(sec); (CC,DD) Graphene electrode;