期刊
PHYSICAL REVIEW B
卷 62, 期 15, 页码 10000-10003出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.62.10000
关键词
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In this paper we report the influence of the water vapor on the electrical resistance of a single-walled carbon nanotube mat (SWNTm). Our results show that the sample exhibits a crossover from decreasing to increasing conductance versus water concentration in the surrounding atmosphere. We suggest that the water molecules act as a donor doping the SWNTm which has p-type semiconductor character in the outgassed state. The time dependence of the SWNTm resistance after exposition to humid atmosphere is explained as an abnormal diffusion phenomenon.
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