ZnO nanocoral reef grown on porous silicon substrates without catalyst

Comparative study of ultraviolet detectors based on ZnO nanostructures grown on different substrates

“…The PS surface had a significant effect on the size and shape of the nanostructures; thus, there was a decrease in the length and size of the nanostructures based on the roughness of the surface morphology. 21 The mechanism for the morphological evolution of the ZnO nanostructures synthesized in the present study is based primarily on surface diffusion. For bulk crystals, minimization of the surface energy is the driving force for the evolution of crystalline morphology.…”

Seeded Porous Silicon Preparation as a Substrate in the Growth of ZnO Nanostructures

“…As can be seen, two distinct peaks are appeared where low emission peak intensity located within UV region and high intensity within the visible region. In the UV region, it can be attributed to the intrinsic property of the wurtzite ZnO and excitonic recombination [23,24]. On the other hand, the visible region can be ascribed to the radial recombination of photogenerated holes with single ionized charge states of specific defects, such as oxygen vacancies or zinc interstitials [25][26][27].…”

On the origin of white photoluminescence from ZnO nanocones/porous silicon heterostructures at room temperature

“…In particular, to obtain ZnO NWs using the VT technique the use of Au nanoclusters, which act as catalysts and nucleation centers on the growth substrates, is often necessary [14]. In order to avoid the use of gold, several research groups have tried various types of substrates, finding promising results with PS [15][16][17]. In addition to the possibility of avoiding the use of Au nanoclusters, the deposition of ZnO on PS is an attractive way of integrating the ZnO with the silicon-based electronics technology [18].…”