Optical and Electrical Properties of Size-Controlled Cu–7,7$'$,8,8$'$-Tetracyanoquinodimethane Nanocrystals
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概要
- 論文の詳細を見る
We report the optical and electrical properties of Cu–TCNQ (TCNQ = 7,7$'$,8,8$'$-tetracyanoquinodimethane) nanocrystals (NCs) fabricated by previously reported chemical reduction reprecipitation methods. The size of the resulting NCs ranges from 50 nm to 10 μm along the long axis. Raman experiment, X-ray photoelectron spectroscopic experiment, and elemental analysis reveal that these NCs have few TCNQ dianions due to the excess amount of Cu. The absorption of interband transition in the near-infrared region shows a blue shift, and the band gap increases with decreasing NC size. The obtained NCs show high electric conductivity, compared with typical Cu–TCNQ microcrystals, and multistep switching due to the existence of TCNQ dianions.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2010-01-25
著者
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MASUHARA Akito
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
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Nakanishi Hachiro
Institute For Chemical Reaction Science Tohoku University
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Kasai Hitoshi
Institute For Multidisciplinary Research For Advanced Materials Tohoku University
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Oikawa Hidetoshi
Institute Of Multidisciplinary Research For Advanced Materials (imram) Tohoku University
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Nakanishi Hachiro
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
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Hiraishi Kentaro
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
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Oikawa Hidetoshi
Institute for Chemical Reaction Science, Tohoku University, Aoba-ku, Sendai 980-8577, Japan
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Masuhara Akito
Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Aoba-ku, Sendai 980-8577, Japan
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Masuhara Akito
Institute for Multidisciplinary Research for Advanced Materials, Tohoku University
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