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Preparation of charge injection layer by electrophoresis of diamond nanoparticles

MetadataDetails
Publication Date2017-08-13
JournalMolecular Crystals and Liquid Crystals
AuthorsYosuke Goto, Fujio Ohishi, Kuniaki Tanaka, Hiroaki Usui
InstitutionsKanagawa University, Tokyo University of Agriculture and Technology

Thin films of diamond nanoparticles were prepared by electrophoretic deposition in water dispersion. The voltage applied to the electrode of electrophoretic deposition gave a crucial influence on the film growth of nanoparticles, and a voltage of 3 to 4 V was found to be optimum for film formation. It was possible to obtain uniform coverage by the diamond nanoparticles on a substrate surface at an early stage of film growth without coagulation of the particles. By depositing a thin layer of diamond nanoparticles on a surface of aluminum cathode, electron injection from the cathode to tris(8-hydroxyquinolinato)aluminum was notably enhanced. It was suggested that electrophoretically deposited diamond nanoparticles can play a role of electron-injection layer to organic semiconductors.