Unusual transport characteristics of nitrogen-doped single-walled carbon nanotubes

被引：25

作者：

Min, Sep ^{[2
]}

Bae, Eun Ju ^{[3
]}

Kim, Un Jeong ^{[3
]}

Lee, Eun Hong ^{[3
]}

Park, Noejung ^{[4
]}

Hwang, Cheol Seong ^{[5
]}

Park, Wanjun ^{[1
]}

机构：

[1] Hanyang Univ, Dept Elect & Comp Engn, Seoul, South Korea

[2] Konkuk Univ, Sch Chem & Biol Engn, Seoul 143701, South Korea

[3] Samsung Adv Inst Technol, Yongin 449712, South Korea

[4] Dankook Univ, Dept Appl Phys, Seoul 140714, South Korea

[5] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151742, South Korea

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 04期

关键词：

D O I：

10.1063/1.2965805

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Electrical transport characteristics of nitrogen-doped single-walled carbon nanotubes (N-SWCNTs), in which the nitrogen dopant is believed to form a pyridinelike bonding configuration, are studied with the field effect transistor operations. Contrary to the expectation that the nitrogen atoms may induce a n-type doping, the electrical transports through our N-SWCNTs are either ambipolar in vacuum or p-type in air. Through the first-principles electronic structure calculations, we show that the nitrogen dopant indeed favors the pyridinelike configuration and the Fermi level of the pyridinelike N-SWCNT is almost at the intrinsic level. (C) 2008 American Institute of Physics.

引用

页数：3

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