Effect of plasma parameters on growth and field emission of electrons from cylindrical metallic carbon nanotube surfaces

Abstract

The effect of plasma parameters (e.g., electron density and temperature, ion density and temperature, neutral atom density, and temperature) on the growth (without a catalyst), structure, and field emission of electrons from a cylindrical metallic carbon nanotube (CNT) surfaces has been theoretically investigated. A theoretical model of charge neutrality, including the kinetics of electrons, positively charged ions, and neutral atoms, and the energy balance of the various species in plasma, has been developed. Numerical calculations of the radius of the cylindrical CNT for different CNT number densities and plasma parameters have been carried out for the typical glow discharge plasma parameters. It is found that, on increasing the CNT number density and plasma parameters, the radius of cylindrical CNT decreases and consequently, the field emission factor for the metallic cylindrical CNT surfaces increase.

Exploration of Novel Hafnium Oxide (HfO2) Based Plasma-Assisted Gate All Around Carbon Nanotube FET (GAA-CNTFET) for High Sensing Applications

“…Increasing values of n i and T i lead to a faster generation of carbon monomers, thus leading to more diffusion of carbon ions. [27][28][29] This leads to an increase in CNT length. PECVD parameters directly influence device performance because they influence device geometry (radius and length).…”

Parametric instabilities in single-walled carbon nanotubes

“…There has been a growing interest in the field of carbon nanotubes [1][2][3][4][5][6][7][8][9][10][11][12][13][14] since they were discovered by Iijima, [15] because of their unique properties and great potential applications. Their most advanced applications include nanoelectronics, hydrogen storage, field-emitters, biological and chemical gas sensors, medicine, nanomaterials, etc.…”