Electrical Properties and Gas Response in Alternate Layer-by-Layer Films of Copper Phthalocyanine Dyes
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概要
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Alternate layer-by-layer (LbL) films were fabricated using two kinds of copper phthalocyanine (CuPc) dyes and the electrical properties due to NO2 gas adsorption were investigated. Water-soluble CuPc dyes, that is, cationic Alcian blue, pyridine variant (AB) and anionic copper phthalocyanine-3,4$'$,4$''$,4$'''$-tetrasulfonic acid, tetrasodium salt (CuPcTs) were used for the alternate LbL films. Successive depositions of the CuPc alternate LbL films were confirmed using UV-visible absorption and ellipsometry measurements. The average thicknesses of the AB and CuPcTs monolayers were estimated to be 0.7 nm and 0.4 nm, respectively. The fundamental electrical properties were examined for the CuPc alternate LbL films with Au gap electrodes and the properties in the direction parallel to the surfaces of the LbL films were measured. The conduction currents were considered to be dominated by hopping conduction. The response to NO2 gas was also measured and the large increase in conduction currents due to NO2 gas adsorption was observed. The magnitude of the conduction current after 30 min exposure to 100 ppm NO2 gas was $10^{3}$–$10^{4}$ times larger than that in N2 gas.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2004-04-15
著者
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Kaneko Futao
Department Of Electrical And Electronic Engineering Faculty Of Engineering Niigata University
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Baba Akira
Department Of Cardiovascular Medicine Wakayama Medical University
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Kato Keizo
Department Of Electrical And Electronic Engineering
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Locklin Jason
Department Of Chemistry University Of Houston
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WATANABE Naoki
Graduate School of Science and Technology, Niigata University
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KATAGIRI Shigenobu
Graduate School of Science and Technology, Niigata University
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Shinbo Kazunari
Department Of Electrical And Electronic Engineering Niigata University
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Advincula Rigoberto
Department Of Chemistry University Of Alahama At Birmingham
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Kato Keizo
Department of Electrical and Electronic Eng., Niigata University, Ikarashi 2-8050, Niigata 950-2181, Japan
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Kaneko Futao
Department of Electrical and Electronic Eng., Niigata University, Ikarashi 2-8050, Niigata 950-2181, Japan
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Shinbo Kazunari
Department of Electrical and Electronic Eng., Niigata University, Ikarashi 2-8050, Niigata 950-2181, Japan
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Advincula Rigoberto
Department of Chemistry, University of Houston, 136 Fleming Building, Houston, Texas 77204-5003, USA
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Locklin Jason
Department of Chemistry, University of Houston, 136 Fleming Building, Houston, Texas 77204-5003, USA
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Katagiri Shigenobu
Graduate School of Science and Technology, Niigata University, Ikarashi 2-8050, Niigata 950-2181, Japan
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Baba Akira
Department of Chemistry, University of Houston, 136 Fleming Building, Houston, Texas 77204-5003, USA
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