Electrical Property of Vertically Grown Carbon Nanotube and Its Application to the Nanofunctional Devices
CHONBUK NATIONAL UNIV CHONJU (KOREA) DEPT OF PHYSICS
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A highly ordered porous alumina array which hole size is decreased down to 20nm was fabricated by a two step anodization method. Carbon Nanotube was grown vertically with thermal CVD at 6OO-7OO degrees C. By using rapid thermal annealing method, low-ohmic contact was formed between multi wall nanotubes and metal electrode and its resistance shows tens to hundreds ohms. The alumina layer which is existed between nanotube and electrode acts as a barrier for conductance. The resistance of carbon nanotube shows the temperatureT exp-1 dependence at 4.21K T 19.9K and semiconducting behavior at this temperature region.
- Physical Chemistry
- Electricity and Magnetism