A. Power Diode Structure and Properties
Nano-composites, especially Fe (iron), and CNTs are of
great interest due to their typical growth control
characteristics. The ratio of Fe to CNT determines the length
and diameter of CNTs. The higher the ratio, the larger are the
diameter and the length of CNTs that can be achieved. The Fe
(magnetic material) is an impurity resulting from the catalyst
used during CNTs growth but it is usually removed after the
synthesis is completed using HN03. The diameters of CNTs
are in the order of 2nm. In this application, it would be
preferable for CNTs to have the smallest diameters possible to
increase the probability of CNTs being semiconductor during
the synthesis and to align all the BSWCNTs in parallel to the
desired direction of conduction [11 ]-[22].