Zno, In < Sub > 2 < / Sub > O < Sub > 3 < / Sub > And Zno Nanorod Array Nanometer Piece Of The Cvd Growth And The Photoelectric Characteristics Of The Network

ZnO nanorod arrays and hexagonal nanodisk networks have been directly grown on a single Si substrate by low temperature CVD process. The photoluminescence (PL) and the field emission (FE) of ZnO nanorod arrays and nanodisk networks were investigated, respectively. In2O3nanorod arrays have been synthesized via in-suit growth process. Possible growth mechanisms were proposed of InO3nanorod arrays. The photocatalytic behaviors of InO3nanorod arrays were studied. These research results would provide a base for further research on synthesises of ZnO and In2O3nanostructures and their applications in photonic and electronic devices, field emission and photocatalyst. Specific results are as fellows,(1) Controllable low temperature vapor-solid growth of ZnO nanorod arrays and hexagonal nanodisk networks and their field emission property:ZnO nanorod arrays were grown directly on Si substrate by thermal evaporation of ZnCl2powder and a mixture of ZnCl2and InCl3·4H2O at450℃in air, respectively. Possible mechanisms are proposed to account for the growth of the ZnO nanorod arrays and hexagonal nanodisk networks via time-dependent experiments. Photoluminescence (PL) spectra of ZnO nanorod arrays and nanodisk networks were measured at room temperature, UV emission peak at379nm was observed in the PL spectrum for ZnO nanorod arrays and nanodisk networks. In addition to UV emission peak, three strong blue green emission peaks at450、465and485nm were observed in the PL spectrum for ZnO nanodisk networks. The FE properties of the ZnO nanorod arrays and nanodisk networks were investigated. Turn-on field and field-enhancement factor is2.6V/μm and14446for ZnO nanodisk networks, respectively. The results indicate that ZnO hexagonal nanodisk networks exhibit enhanced FE properties and are promising candidate in future field-emission-based device applications.(2) Synthesis and photocatalytic properties of In2O3nanorod arrays:In2O3nanorod arrays have been in-suit growth on the surface of indium grains by heating indium grains with As powders and ZnCl2at700℃under the flow of N2and O2. The products were characterized by SEM. EDS and XRD. The results showed that In2O3 nanorod arrays were single crystalline with the cubic structure. The roles of As and ZnCl2in the formation of In2O3nanorod arrays and time-dependent experiments have been investigated. The growth mechanism is briefly discussed. The photocatalytic activity of In2O3nanorod arrays were studied at room temperature. The results indicate that the photocatalytic activity of In2O3nanorod arrays in the photodegradation of acid naphthol red. The photodegradation of acid naphthol red catalyzed by the In2O3nanorod arrays is a pseudo first-order reaction.