•  
  •  
 
Nano Research

Article Title

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

Authors

Lixing Kang, Division of Advanced Nanomaterials, Suzhou Institute of Nanotech and Nanobionics, Chinese Academy of Sciences, Suzhou 215123, China Center for Nanochemistry, Beijing Science and Engineering Technology Research Center for Low Dimensional Carbon Materials, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China University of Chinese Academy of Sciences, Beijing 100049, China
Yue Hu, Center for Nanochemistry, Beijing Science and Engineering Technology Research Center for Low Dimensional Carbon Materials, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Hua Zhong, Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University, Beijing 100871, China
Jia Si, Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University, Beijing 100871, China
Shuchen Zhang, Center for Nanochemistry, Beijing Science and Engineering Technology Research Center for Low Dimensional Carbon Materials, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Qiuchen Zhao, Center for Nanochemistry, Beijing Science and Engineering Technology Research Center for Low Dimensional Carbon Materials, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Jingjing Lin, Center for Nanochemistry, Beijing Science and Engineering Technology Research Center for Low Dimensional Carbon Materials, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Qingwen Li, Division of Advanced Nanomaterials, Suzhou Institute of Nanotech and Nanobionics, Chinese Academy of Sciences, Suzhou 215123, China
Zhiyong Zhang, Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University, Beijing 100871, China
Lianmao Peng, Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University, Beijing 100871, China
Jin Zhang, Center for Nanochemistry, Beijing Science and Engineering Technology Research Center for Low Dimensional Carbon Materials, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China

Keywords

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

Abstract

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 (Vds) = the gate-source voltage (Vgs) = –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.

Graphical Abstract

Publisher

Tsinghua University Press

Share

COinS