Charge Carrier Mobilities in Amorphous Triphenylamine--Fluorene Copolymers: Role of Triphenylamine Unit in Intra- and Intermolecular Charge Transport
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概要
- 論文の詳細を見る
We investigated the effect of the triphenylamine (TPA) content of TPA--fluorene copolymers on their charge carrier mobilities. Intramolecular mobilities were measured by flash-photolysis time-resolved microwave conductivity (TRMC), while intermolecular hole mobilities were determined on the basis of space-charge limited current (SCLC) and field-effect transistor (FET). TRMC and SCLC except for FET showed an analogous dependence on the TPA content. The results are discussed from the viewpoints of delocalization of singly-occupied molecular orbital of radical cation, conformation of polymer chain, and trap effect. This study highlights the importance of optimizing the TPA content in the polyfluorene backbone for electronic device application.
- Japan Society of Applied Physicsの論文
- 2012-06-25
著者
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Seki Shu
Department Of Applied Chemistry Graduate School Of Engineering Osaka University
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Saeki Akinori
Department Of Applied Chemistry Graduate School Of Engineering Osaka University
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Fukumatsu Takahiro
Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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Fukumatsu Takahiro
Department Of Applied Chemistry Graduate School Of Engineering Osaka University
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