Synthesis and photoluminescence properties of ZnO nanowire arrays

Abstract

In this paper we report a chemical method named coordination reaction method to synthesize ZnO nanowire arreys. ZnO nanowires with the diameter about 80 nm were successfully fabricated in the channels of the porous anodic alumina (PAA) template by the above coordination reaction method. The microstructures of ZnO/PAA assembly were characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The results showed that the ZnO nanowires can be uniformly assembled into the nanochannels of PAA template. The growth mechanism of ZnO nanowires and the conditions of the coordination reaction are discussed. Photoluminescence (PL) measurement shows that the ZnO/PAA assembly system has a blue emission band caused by the various defects of ZnO.

Effect of growth temperature on the structure and optical properties of ZnO nanorod arrays grown on ITO substrate

“…Znic oxide (ZnO), an important semiconducting oxide with a wide direct bandgap (3.37 eV) and a large exciton binding energy (60 meV) at room temperature , is considered as a promising material for various photonic and electrical applications. Recently, more and more attention has been paid to the preparation of ZnO nanostructures, such as nanowires, nanorods, nanotubes, nanosheets, nanoflowers, and nanosprings . Among those structures, ZnO nanorods or nanowires with highly oriented and ordered arrays in particular have drawn much attention for the development of novel nanodevices such as sensors, solar cells and UV lasers .…”

Structural tuning of photoluminescence in nanoporous anodic alumina by hard anodization in oxalic and malonic acids

“…nanowires, nanotubes, nanorods, etc.). Furthermore, as a consequence of its unique optical properties, NAA has demonstrated to be an excellent platform for developing such optical nanodevices as biosensors, interferometers, supports and so forth [ 31 - 35 ].…”

“…This feature is a crucial factor for controlling the PL behaviour of NAAMs at will, what is dearly important for studying the PL properties of several nanostructures as nanowires or nanotubes by themselves (i.e. minimising or eliminating the PL interferences from the NAA template) [ 33 , 35 ] or designing active optical nanostructures as biosensors [ 31 , 32 ].…”

The thermal stability of anodic alumina membranes at high temperatures

“…Nano‐porous anodic alumina membranes (AAM) have attracted considerable attention due to their unique structural properties, such as controllable pore diameters, extremely narrow pore‐size distributions and ideally shaped cylindrical pores . They have become popular versatile templates for the fabrication of nanometer‐sized fibrils, rods, wires and tubules of metal and semiconductors .…”