Published May 28, 2010 | Version v1
Journal article Metadata-only

Anomalous n-type electrical behaviour of Pd-contacted CNTFET fabricated on small-diameter nanotube

Creators

  • 1. Department of Electronic and Electrical Engineering, University of Sheffield, Mappin Building, Mappin Street, Sheffield S1 3JD (United Kingdom)
  • 2. Department of Engineering, University of Cambridge, 9 J J Thomson Avenue, Cambridge CB3 0FA (United Kingdom)

Description

A Pd-contacted dopant-free CNTFET with small-diameter (0.57 nm) carbon nanotube showing an anomalous n-type electrical characteristic is reported for the first time. This observed behaviour is attributed to a carbon nanotube work function higher than (or close to) palladium as well as a large hole-to-electron effective mass ratio of ∼ 2.5 predicted by hybridization in small-diameter nanotubes. A variation of the conduction type with temperature is also observed and is attributed to an increase of the palladium work function and decrease of the CNT work function with increasing temperature.

Availability note (English)

Available from http://dx.doi.org/10.1088/0957-4484/21/21/215202

Additional details

Identifiers

DOI
10.1088/0957-4484/21/21/215202;
PII
S0957-4484(10)44046-5;

Publishing Information

Journal Title
Nanotechnology (Print)
Journal Volume
21
Journal Issue
21
Journal Page Range
[7 p.]
ISSN
0957-4484

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
43024499
Subject category
S77: NANOSCIENCE AND NANOTECHNOLOGY;
Descriptors DEI
CARBON; EFFECTIVE MASS; ELECTRONS; NANOTUBES; PALLADIUM; WORK FUNCTIONS
Descriptors DEC
ELEMENTARY PARTICLES; ELEMENTS; FERMIONS; FUNCTIONS; LEPTONS; MASS; METALS; NANOSTRUCTURES; NONMETALS; PLATINUM METALS; TRANSITION ELEMENTS