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|Type:||Artigo de periódico|
|Title:||Structural and electronic properties of zigzag carbon nanotubes filled with small fullerenes|
|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.|
|Editor:||Iop Publishing Ltd|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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