Study of Optical, Electrical and Magnetic Propertiesof Composite Nanomaterials on the Basisof Broadband Oxide Semiconductors

摘要

Vertically oriented arrays of zinc oxide nanorods with high structural perfection and good optical properties have been obtained by gas—phase synthesis from the elements on the substrates. Homogeneous and heterogeneous o-n transitions have been produced on the basis of these arrays of nanorods. Thermal growth from salt mixtures has been used to synthesize zinc oxide nanorods doped with transition metals (Fe, Mn, Cr). Zinc oxide nanorods doped with iron, manganese, tin, and lithium showed room-temperature ferromagnetic properties. Two-terminal planar structures have been produced from the nanorods doped with chrome. These structures are sensitive to ultraviolet radiation and insensitive to visible light. The field-effect transistor made from the zinc oxide nanorod doped with chrome has electron conductivity and works in the enhancement mode.