Nano Research

, Volume 8, Issue 11, pp 3694–3703 | Cite as

Large-area growth of ultra-high-density single-walled carbon nanotube arrays on sapphire surface

  • Lixing Kang
  • Yue Hu
  • Hua Zhong
  • Jia Si
  • Shuchen Zhang
  • Qiuchen Zhao
  • Jingjing Lin
  • Qingwen LiEmail author
  • Zhiyong Zhang
  • Lianmao Peng
  • Jin ZhangEmail author
Research Article


A scalable approach to obtaining high-density, large-area single-walled carbon nanotube (SWNT) arrays is essential for realizing the full potential of SWNTs in practical electronic devices; this is still a great challenge. Here, we report an improved synthetic method for large-area growth of ultra-high-density SWNT arrays on sapphire surfaces by combining Trojan catalysts (released from the substrate, to assure ultra-high density) with Mo nanoparticles (loaded on the surface, to stabilize the released Trojan catalysts) as cooperating catalysts. Dense and perfectly aligned SWNTs covered the entire substrate and the local density was as high as 160 tubes/μm. Field-effect transistors (FETs) built on such arrays gave an output current density of −488 μA/μm at the drain-source voltage (V ds) = the gate-source voltage (V gs) =–2 V, corresponding to an on-conductance per width of 244 μS/μm. These results confirm the wide range of potential applications of Trojan-Mo catalysts in the structure-controlled growth of SWNTs.


single-walled carbon nanotube arrays ultra-high density large area cooperating catalysts 


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Supplementary material

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Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Lixing Kang
    • 1
    • 2
    • 3
  • Yue Hu
    • 2
  • Hua Zhong
    • 4
  • Jia Si
    • 4
  • Shuchen Zhang
    • 2
  • Qiuchen Zhao
    • 2
  • Jingjing Lin
    • 2
  • Qingwen Li
    • 1
    Email author
  • Zhiyong Zhang
    • 4
  • Lianmao Peng
    • 4
  • Jin Zhang
    • 2
    Email author
  1. 1.Division of Advanced Nanomaterials, Suzhou Institute of Nanotech and NanobionicsChinese Academy of SciencesSuzhouChina
  2. 2.Center for Nanochemistry, Beijing Science and Engineering Technology Research Center for Low Dimensional Carbon Materials, College of Chemistry and Molecular EngineeringPeking UniversityBeijingChina
  3. 3.University of Chinese Academy of SciencesBeijingChina
  4. 4.Key Laboratory for the Physics and Chemistry of Nanodevices, Department of ElectronicsPeking UniversityBeijingChina

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