薄膜型有機デバイスの実現へ向けた静電塗布技術の確立

概要

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Electrospray deposition technique is one of the most interesting solution processes for thin film organic devices, such as organic light-emitting diodes and organic solar cells. This is because nano-size structures can be fabricated by controlling the evaporation speed of the organic solvent. Since we can realize multilayer organic thin films using the electrospray deposition technique like a thermal evaporation process, device performances will improve by optimizing the device structure. In this research, we investigated the relationship between the spray diameter while depositing the organic layer and several parameters of organic solvents to realize the large device area. In addition, we achieved the smooth surface of the organic thin film by adding the second organic solvent due to the controlled evaporation speed of the organic solvent.