Formation of Azafullerene Encapsulated Single-Walled Carbon Nanotubes Using Plasma Ion Irradiation Method
نویسندگان
چکیده
The synthesis of azafullerene C59N is realized through a nitrogen plasma irradiation method, which is confirmed by the analysis of mass spectroscopy. A plasma consisting of a fullerene negative ion C60 and the azafullerene positive ion C59N��C60-C59N plasma��is generated by means of an electron beam ionization. C60 and C59N ions are selectively irradiated to single-walled carbon nanotubes (SWNTs) put on a substrate which is positively or negatively biased, respectively. The electrical transport properties of C60 and C59N irradiated SWNTs are investigated by fabricating them as the channels of field-effect transistor devices in vacuum at room temperature. C60 irradiated SWNTs realized by the positive substrate bias show the p-type transport property. On the other hand, C59N irradiated SWNTs realized by the negative substrate bias exhibit the n-type characteristic.
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