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|Title:||Optical and Electrochemical Properties of Single-walled Carbon Nanotube Arrays Attached to Silicon (100) Surfaces|
|Citation:||Fullerenes, Nanotubes, and Carbon Nanostructures, 2008; 16(1):18-29|
|Publisher:||Taylor and Francis Inc|
|Jingxian Yu; Benjamin S. Flavel and Joseph G. Shapter|
|Abstract:||Arrays of aligned single-walled carbon nanotubes (SWCNTs) have been attached to a Si (100) surface using two approaches. The first method uses a self-assembled ethyl undecanoate monolayer (SWCNTs-SAM structure), while the second sees the nanotubes attached directly to an ultrathin SiO2 layer (SWCNTs-SiO2 structure). The optical and electrochemical properties of two nanotube arrays were compared by fluorescence spectroscopy and cyclic voltammetry. The results show that the SWCNTs-SiO2 structure has strong coupling between the attached SWCNTs and the silicon substrate, but the coupling gets smaller with increasing size of attached SWCNT bundles. The SWCNTs-SAM structure shows poor conductivity and electrochemical reversibility. The SWCNTs-SiO2 structure does appear to be a very useful substrate for use in further applications.|
|Keywords:||Single-walled carbon nanotubes; surface attachment; electrochemistry; fluorescence emission; coupling effects; silicon|
|Rights:||Copyright © 2011 Taylor & Francis Group, an informa business|
|Appears in Collections:||Chemistry and Physics publications|
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