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Advanced Materials

100 mm Long, Semiconducting Triple-Walled Carbon Nanotubes

Authors

  • Qian Wen,

    1. Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University Beijing 100084 (PR China)
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  • Weizhong Qian,

    Corresponding author
    1. Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University Beijing 100084 (PR China)
    • Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University Beijing 100084 (PR China). Fax: +86-10-6277-2051
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  • Jingqi Nie,

    1. Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University Beijing 100084 (PR China)
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  • Anyuan Cao,

    1. Department of Advanced Materials and Nanotechnology, College of Engineering, Peking University Beijing 100871 (PR China)
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  • Guoqing Ning,

    1. CNano Technology Limited, Two Technology St. BDA East District, Beijing 100023 (PR China)
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  • Yao Wang,

    1. Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University Beijing 100084 (PR China)
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  • Ling Hu,

    1. Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University Beijing 100084 (PR China)
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  • Qiang Zhang,

    1. Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University Beijing 100084 (PR China)
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  • Jiaqi Huang,

    1. Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University Beijing 100084 (PR China)
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  • Fei Wei

    Corresponding author
    1. Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University Beijing 100084 (PR China)
    • Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University Beijing 100084 (PR China). Fax: +86-10-6277-2051
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Abstract

Direct growth of 100 mm long, semiconducting triple-walled carbon nanotubes (TWNTs) on Si substrates by chemical vapor depoistion is reported. By tailoring the temperature for a certain gas flow rate, a yield of nearly 90% of centimeter-long TWNTs is obtained. The TWNTs show an unprecedented structural homogeneity, in which each shell maintains a constant chiral index extending over a very large distance (>60 mm). The semiconducting TWNTs can be directly fabricated into field-effect transistors.

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