CARBON NANOTUBES AND METHOD OF GROWING THE SAME, HYBRID STRUCTURE AND METHOD OF GROWING THE SAME AND LIGHT EMITTING DEVICE

摘要

A carbon nanotube is provided for a light-emitting diode when the carbon nanotube is applied to manufacture back light for liquid display, which results from a self-irradiation property in no need of using low-voltage fluorescent substances. A method for preparing a carbon nanotube comprises the following steps of: forming a multiple-thin-film structural catalyst layer to promote growth of carbon nanotube on a substrate; and injecting gas containing carbon to the catalyst layer in order to grow the carbon nanotube. The catalyst layer includes one or more first layer containing Zn and one or more second layer which does not contain the Zn. The first and second layers are laminated in turns. The second layer contains Ni. The catalyst layer is surface-treated to form catalyst grain. The formation of the catalyst grain is processed through a plasma treatment, laser treatment or a heat treatment.