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Aligned High Density Semi‐Conductive Ultra‐Small Single‐Walled Carbon Nanotubes

Yun Wang,T. Ben,S. Qiu,V. Valtchev

Published 2019 in ChemistrySelect

ABSTRACT

Zeolite type material (AlPO-5, AFI-type) with rod-like morphol-ogy and mono-dimensional channel system running along the long crystal axis was vertically grown on a stainless-steel plate. The organic template used in the synthesis was carbonized to generate single-walled carbon nanotubes (SWCNTs). Thus, SWCNTs with a diameter of 0.4 nm, perfectly aligned and vertically oriented to the support surface with a density of 2.6 × 10 5 SWCNTs μm 2 , were obtained. The free end of AlPO-5 crystal was chemically etched in order to create contact surface and measure the conductivity of SWCNT@AlPO-5 film which was found to be 4.16 × 10 1 Ω 1 cm 1 . This approach of aligned SWCNTs can be applied to different types of substrates, thus opening the road to practical uses of SWCNTs. 1 Ω 1 cm 1 . The SWCNTs array is semiconductor type, and its size is far smaller than the dimensions of semiconductor materials currently used in computing and data storage. This material is expected to overcome the size limitation of silicon-based materials and have the potential to be used in electronic devices, significantly increasing computing speed and storage capacity.

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