Raman Study of Bromine Doped Single-walled Carbon Nanotubes under high pressure

【Author】

Jan Carlsten;Thomas Wagberg;Bertil Sundqvist;

【Abstract】

<正> An enhancement of electrical conductivity hasbeen observed for single-walled carbon nanotubes(SWNT) doped with bromine and other halogens.Recent studies show that iodine appears insidenanotube bundles as linear polyiodide chains.Bromine has similar properties to iodine.However,the structure of Br_2 doped materials is still notclear.Raman spectra under HP show pronouncedchanges of breathing modes in pristine SWNTsamples.This effect gives us a further possibility tounderstand the characteristic properties.We presentRaman results for several SWNT samples doped withBr_2,both at ambient pressure and under high

【Keywords】

Single-walled nanotube; Doping; High Pressure.

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