Silicon Encapsulated Carbon Nanotubes
1 Institute for Functional Nanomaterials, University of Puerto Rico, San Juan, PR, USA
2 Department of Chemistry, University of Puerto Rico, P.O. Box 23323, San Juan, PR, 00931, USA
3 Department of Physics, University of Puerto Rico, P.O. Box 23343, San Juan, PR, 00931, USA
4 Sensors and Electronics Branch, Instrumentation and Controls Division, National Aeronautics and Space Administration Glenn Research Center, 21000 Brookpark Road, Cleveland, OH, 44135, USA
Nanoscale Research Letters 2009, 5:74-80 doi:10.1007/s11671-009-9446-zPublished: 9 October 2009
A dual stage process of depositing bamboo-like carbon nanotubes (BCNTs) by hot filament chemical vapor deposition (HFCVD) and coating Si using Radio frequency sputtering (RFS) technique. The films were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and electron field emission studies (EFE). SEM results suggest a dense network of homogeneous silicon-coated BCNTs. From the comprehensive analysis of the results provided by these techniques emerges the picture of Si encapsulated BCNTs.