Title :
Chemical Bonding and Schottky Barrier for Metal-Carbon Nanotube Contacts
Author :
He, Yu ; Zhang, Jinyu ; Zhang, Ming ; Wang, Yan ; Yu, Zhiping
Author_Institution :
Inst. of Microelectron., Tsinghua Univeristy, Beijing
Abstract :
We investigate both end-contact and side-contact structures between Al, Pd, Sc and carbon nanotube (CNT) in this paper. The different structures show the different chemical bonds and charge transfer at the metal-CNT contact interfaces. A novel method based on dipole effect is proposed to calculate the Schottky barrier height (SBH). Different SBHs for the contacts are due to different electro-negativity of metal atoms as well as the chemical bonds.
Keywords :
Schottky barriers; aluminium; bonds (chemical); carbon nanotubes; charge exchange; electrical contacts; electronegativity; palladium; scandium; Al-C; Pd-C; Sc-C; Schottky barrier height; charge transfer; chemical bonding; electro-negativity; end-contact structure; metal atoms; metal-CNT contact interfaces; metal-carbon nanotube contacts; side-contact structure; Bonding; Carbon nanotubes; Charge transfer; Chemicals; Contacts; Electrodes; Electrons; Geometry; Microelectronics; Schottky barriers;
Conference_Titel :
Computational Electronics, 2009. IWCE '09. 13th International Workshop on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3925-6
Electronic_ISBN :
978-1-4244-3927-0
DOI :
10.1109/IWCE.2009.5091091
