Improvement of Field Emission Characteristics of Carbon Nanotubes by Excimer Laser Treatment
Journal
Japanese Journal of Applied Physics
Journal Volume
41
Journal Issue
10
Pages
6132-6136
Date Issued
2002
Author(s)
Abstract
The density of carbon nanotubes (CNTs) deposited by microwave plasma chemical vapor deposition (MPCVD) is extremely high, which results in screening effect in the electric field. To achieve excellent field emission characteristics, an excimer laser treatment (ELT) was introduced to reduce the density of CNTs. Scanning electron microscopy (SEM) micrographs showed reduced densities of the CNTs, and the measurement of electrical characteristics results revealed the improved field emission properties under suitable ELT conditions. The turn-on field decreased from 3 V/μm to 2.1 V/μm, and the emission current density increased from 5.73 mA/cm2 to 87.13 mA/cm2 at the applied field of 5 V/μm.
Publisher
The Japan Society of Applied Physics
Type
journal article