Published February 13, 2008 | Version v1
Journal article Metadata-only

Enhanced field emission from aligned multistage carbon nanotube emitter arrays

Creators

  • 1. Nanomaterials and Device Lab, Department of Mechanical and Materials Engineering, Florida International University, Miami, FL 33174 (United States)
  • 2. School of Nano Engineering, Center for Nano Manufacturing, Inje University, Gimhae, GyungNam 621-749 (Korea, Republic of)

Description

In this work we report on the synthesis and field emission properties of carbon nanotube multistage emitter arrays grown on porous silicon by catalytic thermal chemical vapor deposition. The vertically oriented multistage array structures consisted of SWNTs and thin MWNTs grown on MWNTs, confirmed by TEM and Raman analysis. Higher field emission current ∼32 times and low threshold field ∼1.5 times were obtained for these structures in comparison to only MWNT arrays. The enhanced field emission results for these multistage emitters are a consequence of higher field concentration, which is ∼3 times more than MWNTs

Additional details

Identifiers

DOI
10.1088/0957-4484/19/6/065605;
PII
S0957-4484(08)60235-4;

Publishing Information

Journal Title
Nanotechnology (Print)
Journal Volume
19
Journal Issue
6
Journal Page Range
p. 065605
ISSN
0957-4484

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
39039559
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CARBON; CHEMICAL VAPOR DEPOSITION; FIELD EMISSION; NANOTUBES; POROUS MATERIALS; SILICON; TRANSMISSION ELECTRON MICROSCOPY
Descriptors DEC
CHEMICAL COATING; DEPOSITION; ELECTRON MICROSCOPY; ELEMENTS; EMISSION; MATERIALS; MICROSCOPY; NANOSTRUCTURES; NONMETALS; SEMIMETALS; SURFACE COATING