Maskless Patterning of Vapor-Deposited Photosensitive Film and its Application to Organic Light-Emitting Diodes
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概要
- 論文の詳細を見る
Photosensitive thin films were prepared by the codeposition of a polymerizable monomer and a photoinitiator, which were patterned by UV irradiation followed by development in an organic solvent. This technique was applied for the preparation of a phosphorescent layer of an organic light emitting diode (OLED) by combining a vinylcarbazole monomer, a dopant of a vinyl derivative of a iridium complex, and a photoinitiator of a benzophenone derivative. An OLED with multiple emitting elements was prepared by repeating this patterning process. It was confirmed that the patterning does not cause harmful damage to the device characteristics. Moreover, the device characteristics can be improved after the photo patterning because the photopolymerization stabilizes the deposited films. This method is advantageous as a new technique for patterning polymer films without using a shadow mask for vapor deposition or a photoresist.
- 2011-04-25
著者
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Usui Hiroaki
Department Of Material Systems Engineering Tokyo University Of Agriculture And Technology
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Saito Wataru
Department Of Electrical And Electronic Engineering Tokyo Institute Of Technology
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Tanaka Kuniaki
Department Of Biological Science Faculty Of Agriculture Shizuoka University
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Yokokura Seiji
Department Of Organic And Polymer Materials Chemistry Tokyo University Of Agriculture And Technology
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Muroyama Masakazu
Department Of Organic And Polymer Materials Chemistry Tokyo University Of Agriculture And Technology
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Muroyama Masakazu
Department of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
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Yokokura Seiji
Department of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
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