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Ko, Hyunhyub
Functional Nanomaterials & Devices Lab
Research Interests
  • Functional nanomaterials, flexible electronics, electronic skins, wearable sensors

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Liquid-crystalline processing of highly oriented carbon nanotube arrays for thin-film transistors

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Title
Liquid-crystalline processing of highly oriented carbon nanotube arrays for thin-film transistors
Author
Ko, HyunhyubTsukruk, Vladimir V.
Keywords
Carbon nanotube arrays; CNT arrays; Micropatterned geometry; Tilted drop casting
Issue Date
2006-07
Publisher
AMER CHEMICAL SOC
Citation
NANO LETTERS, v.6, no.7, pp.1443 - 1448
Abstract
We introduce a simple solution-based method for the fabrication of highly oriented carbon nanotube (CNT) arrays to be used for thin-film transistors. We exploit the liquid-crystalline behavior of a CNT solution near the receding contact line during tilted-drop casting and produced long-range nematic-like ordering of carbon nanotube stripes caused by confined micropatterned geometry. We further demonstrate that the performance of thin-film transistors based on these densely packed and uniformly oriented CNT arrays is largely improved compared to random CNTs. This approach has great potential in low-cost, large-scale processing of high-performance electronic devices based on high-density oriented CNT films with record electrical characteristics such as high conductance, low resistivity, and high career mobility.
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DOI
10.1021/nl060608r
ISSN
1530-6984
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ECHE_Journal Papers
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