Oriented polycrystalline thin films of transition metal chalcogenides

摘要

A method of preparing a polycrystalline thin film or nested polyhedra of circular or nanotubular cross-section of a transition metal chalcogenide which includes (a) depositing a layer of a transition metal material or mixtures thereof on the substrate; and (b) heating the layer in a gaseous atmosphere containing one or more chalcogen materials for a time sufficient to allow the transition metal material and the chalcogen material to react and form the oriented polycrystalline thin film.