Journal of Vacuum Science & Technology A, Vol.27, No.4, 808-812, 2009
Fabrication and characterization of metal-semiconductor-metal nanorod using template synthesis
The authors attempted to fabricate and characterize one dimensional metal-semiconductor-metal (MSM) nanorod using a template. Cadmium selenide (CdSe) and polypyrrole (Ppy) were chosen as n-type and p-type semiconductor materials, respectively, whereas Au was chosen as a metal electrode. The fabrication of the nanorod was achieved by "template synthesis" method using polycarbonate membrane. The structure of the fabricated nanorod was analyzed using scanning electron microscopy and energy dispersive spectroscopy. In addition, the electrical properties of MSM nanorods were characterized using scanning probe microscopy (Seiko Instruments, SPA 300 HV) by probing with a conductive cantilever. I-V characteristics as a function of the temperature give the activation energy, as well as the barrier height of a metal-semiconductor contact, which is useful to understand the conduction mechanism of MSM nanorods.
Keywords:cadmium compounds;electrodes;gold;II-VI semiconductors;metal-semiconductor-metal structures;nanofabrication;nanostructured materials;organic semiconductors;scanning electron microscopy;scanning probe microscopy;X-ray chemical analysis