Fabrication of CNx/C nanotube arrays via chemical modification in situ and application in an electronic nano-device

Abstract

CN_x/C nanotube arrays were fabricated via a simple chemical modification porous alumina membrane in situ method. The nanotubes consist of two sections featuring straight and hollow cylinder structure, one section made of N-doped carbon and the other one made of pure carbon. The metal–semiconductor junction was formed in the middle as a result of being doped or undoped with nitrogen. The on–off current ratio at ±5 V is 25. The applicability of chemical modification in situ technique provides us with a good opportunity for practical use of the multiwall nanotube for future nano-devices.