Measurements of Electronic Transport Properties of Single-Walled Carbon Nanotubes Encapsulating Alkali-Metals and C60 Fullerenes via Plasma Ion Irradiation
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概要
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We report on the measurements of the electronic transport properties of Cs-encapsulated single-walled carbon nanotubes (SWNTs), Li-encapsulated SWNTs, and C60-encapsulated SWNTs synthesized by plasma ion irradiation method. After fabricating field-effect transistor (FET) configurations using pristine and plasma-ion-irradiated SWNTs, the electronic transport properties of these devices are investigated in vacuum at room temperature. As a result, C60-encapsulated SWNTs give rise to a p-type semiconducting property as pristine SWNTs do. On the other hand, it is clearly observed that Cs-encapsulated SWNTs exhibit n-type transport behavior. Moreover, Li-encapsulated SWNTs show an ambipolar transport property with both n-type and p-type characteristics. Thus, the electronic properties of SWNTs are found to be successfully controlled by plasma ion irradiation.
- 2005-04-15
著者
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OMOTE Kenji
Ideal Star Inc.
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KASAMA Yasuhiko
Ideal Star Inc.
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JEONG Goo-Hwan
Graduate School of Engineering, Tohoku University
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Izumida Takeshi
Graduate School Of Engineering Tohoku University
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Mimura Hidenori
Research Institute Of Electrical Commnication Tohoku University
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Hirata Takamichi
Graduate School Of Engineering Tohoku University
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Hatakeyama Rikizo
Graduate School Of Engineering Tohoku University
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Neo Yoichiro
Reseach Institute Of Electrical Communication Tohoku University
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Hatakeyama Rikizo
Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
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Kasama Yasuhiko
Ideal Star Corporation, Minami-Yoshinari 6-6-3, Aoba-ku, Sendai 989-3204, Japan
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Izumida Takeshi
Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
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Mimura Hidenori
Reseach Institute of Electrical Communication, Tohoku University,
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Omote Kenji
Ideal Star Corporation, Minami-Yoshinari 6-6-3, Aoba-ku, Sendai 989-3204, Japan
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