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Urszula Dettlaf-Wegl,Viera Skakalova,Jannik Meyer,Jiri Cech,Bernd G. Mueller,Siegmar Roth 한국물리학회 2007 Current Applied Physics Vol.7 No.1
We present a comparative study of uorinated single wall carbon nanotubes and C60 peapods. The uorination was carried out byxenon diuoride treatment at moderate temperature (100.C). The uorination level was determined by EDX. In empty nanotubes aometry of C4F). TEM images show that this uorination procedure does not aect the peapod structure. The elemental mapping carriedout by EELS reveals homogenous distribution of uorine along the carbon nanotube bundle. This chemical treatment is found to changethe electrical properties of carbon nanotubes in bucky papers. Four-probe measurements indicate a conductivity decrease by up to twoorders of magnitude at room temperature. The temperature dependence of the conductivity indicates a signicant change in the chargecarrier density of this system. Moreover, a non-linear behavior of theIV characteristic is observed below 50 K in uorinated peapods.