The dependence of the Schottky barrier height on carbon nanotube diameter for Pd-carbon nanotube contacts.
Direct measurements are presented of the Schottky barrier (SB) heights of carbon nanotube devices contacted with Pd electrodes. The SB barrier heights were determined from the activation energy of the temperature-dependent thermionic emission current in the off-state of the devices. The barrier heights generally decrease with increasing diameter of the nanotubes and they are in agreement with the values expected when assuming little or no influence of Fermi level pinning.
Department of Physics, Göteborg University, Göteborg, Sweden.
Johannes
J
Svensson
Abdelrahim A
AA
Sourab
Yury
Y
Tarakanov
Dong Su
DS
Lee
Seung Joo
SJ
Park
Seung Jae
SJ
Baek
Yung Woo
YW
Park
Eleanor E B
EE
Campbell