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Type: Artigo de periódico
Title: Structural and electronic properties of zigzag carbon nanotubes filled with small fullerenes
Author: Troche, KS
Coluci, VR
Rurali, R
Galvao, DS
Abstract: In this work we investigated the encapsulation of C-20 and C-30 fullerenes into semiconducting carbon nanotubes to study the possibility of bandgap engineering in such systems. Classical molecular dynamics simulations coupled to tight-binding calculations were used to determine the conformational and electronic properties of carbon nanotubes with an increasing fullerene concentration. We have observed that C-20 fullerenes behave similarly to a n-type dopant while C-30 can provide p-type doping in some cases. The combined incorporation of both types of fullerenes ( hybrid encapsulation) into the same nanotube leads to a behaviour similar to that found in electronic pn-junctions. These aspects can be exploited in the design of nanoelectronic devices using semiconducting carbon nanotubes.
Country: Inglaterra
Editor: Iop Publishing Ltd
Citation: Journal Of Physics-condensed Matter. Iop Publishing Ltd, v. 19, n. 23, 2007.
Rights: fechado
Identifier DOI: 10.1088/0953-8984/19/23/236222
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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