Optical and Charge Transport Properties of a New n-Type Solution-Processible Quinoidal Oligothiophene
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概要
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Quinoidal oligothiophenes have recently emerged as a promising class of organic semiconductors for organic electronics. In this study, solution-processed neat films of a novel n-type quinoidal quaterthiophene modified with electron-withdrawing groups [QQT(OMe)2] are characterized in details by absorption spectroscopy, ultraviolet photoelectron spectroscopy, atomic force microscopy, Raman spectroscopy and field-effect transistor characteristics. Top-contact transistor with Au source/drain electrodes shows in the saturation regime a field-effect electron mobility of $5\times 10^{-4}$ cm2 V-1 s-1 with a threshold voltage of $-34$ V. The results indicate that QQT(OMe)2 is a promising candidate for future solution-processed transparent organic electronic devices. This study provides relevant information about the influence of the substituents along the thiophene backbone on the intermolecular interactions and the electronic properties of these oligomers. The results should be taken into account in the development of novel high mobility quinoidal oligothiophenes.
- 2010-01-25
著者
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Matsumoto Mutsuyoshi
Department Of Materials Science And Technology Faculty Of Industrial Science And Technology Tokyo Un
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AOYAMA Tetsuya
Supramolecular Science Laboratory, RIKEN (The Institute of Physical and Chemical Research)
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Wada Tatsuo
Supramolecular Science Laboratory Riken (the Institute Of Physical And Chemical Research)
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Muto Tsuyoshi
Supramolecular Science Laboratory Riken (the Institute Of Physical And Chemical Research)
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Nakao Aiko
Advanced Technology Support Division, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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Ribierre Jean
Supramolecular Science Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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Watanabe Satoshi
Supramolecular Science Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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Gu Jie
Supramolecular Science Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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Muto Tsuyoshi
Supramolecular Science Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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Wada Tatsuo
Supramolecular Science Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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Matsumoto Mutsuyoshi
Department of Materials Science and Engineering, Faculty of Industrial Science and Technology, Tokyo University of Science
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Aoyama Tetsuya
Supramolecular Science Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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