Growth of Aligned ZnO Nanorods

Abstract

Growth of high-density and aligned ZnO nanorods on ZnO film substrate has been demonstrated using vapor-transport of thermally evaporated Zn metal powders followed by condensation. Morphological studies show that the nanorods grow preferentially from a hexagonal ZnO base with a uniform hexagonal structure following three-dimensional island-like growth mechanism. Structural and spectroscopic properties clearly indicate that the nanorods are relatively good and defect-free in quality. These nanorods have potential for technological implications.

Hydrothermal synthesis and optical properties of Ni doped ZnO hexagonal nanodiscs

“…When they were excited by the laser of 325 nm, the excitons take up higher energy levels at the bottom of conduction band. Radioactive recombination of these excitons will lead to a blue shift and broaden of UV emission peak [24]. The lattice strain induced by the lattice distance would also lead to some shift in band gap but may not play a major role in the determination of band gap as the small deformation of the lattice distances.…”

Synthesis and optical properties of Ce-doped ZnO hexagonal nanoplatelets

“…When they were excited by the laser of 325 nm, the excitons take up higher-energy levels at the bottom of the conduction band. Radioactive recombination of these excitons will lead to a blue shift and broadening of UV emission peak [31]. The lattice strain induced by the lattice distance would also lead to some shift in band gap but may not play a major role in the determination of band gap as the small deformation of the lattice distances.…”

Synthesis and characterization of composite of gold nanoparticles attached ZnO nanorods

“…Various methods have been utilized to grow ZnO nanostructures on various substrates. Among all of processes, thermal evaporation is one of the most commonly used synthesis processes, such as physical vapor deposition (PVD) [9], chemical vapor deposition (CVD) [10]. There were also reports on wet chemical synthesis of ZnO nanostructures which can generate ZnO nanostructures through heating aqueous solution of zinc nitrate hexahydrate and hexamethylenetetramine in the water bath [11].…”