Effect of H2O adsorption on the electrical transport properties of double-walled carbon nanotubes |
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| Authors: | Dongsheng Tang Lijie Ci Sishen Xie |
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| Affiliation: | a College of Physics and Information Science, Hunan Normal University, Changsha 410081, PR China
b Institute of Physics, Chinese Academy of Sciences, Beijing 100080, PR China |
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| Abstract: | Water molecules adsorbed on a double-walled carbon nanotube (DWCNT) serve as charge trapping centers when present in low density and as electron donors when present in high density. There is a discontinuous change between the low- and high-density regions. H2O molecules are apt to be adsorbed on the outer surface of DWCNTs, and in this case the electrical transport properties are extremely sensitive to environment, which suggests that DWCNTs are hole doped and act as an electric dipole with the inner tube. |
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| Keywords: | Carbon nanotubes Electrical (electronic) properties Adsorption properties Transport properties |
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