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.
Svensson
Johannes
J
Department of Physics, Göteborg University, Göteborg, Sweden.
Sourab
Abdelrahim A
AA
Tarakanov
Yury
Y
Lee
Dong Su
DS
Park
Seung Joo
SJ
Baek
Seung Jae
SJ
Park
Yung Woo
YW
Campbell
Eleanor E B
EE