Large-Scale Synthesis of Six-Nanometer-Wide ZnO Nanobelts

Abstract

Using a thin film of metallic tin as catalyst, ultrasmall single-crystalline zinc oxide nanobelts have been synthesized in large quantity using a simple solid-vapor technique. The nanobelts have an average width of 5.5 nm and a narrow size distribution of (1.5 nm. The nanobelts grew along the [0001] direction, with (21 h1 h0) top/bottom surfaces and (011 h0) side surfaces. Photoluminescence measurement showed a blue shift in the emission spectrum compared to that acquired from ZnO nanobelts of ∼200 nm in width. These ultrafine nanobelts should be good candidates for investigating size-induced electrical and optical properties of functional oxides.

ZnO nanostructures for optoelectronic applications

“…A typical ZnO field effect transistor showed a gate threshold voltage of −15 V, a switching ratio of nearly 100 and a peak conductivity of 1.25 × 10− 3 Ω cm− 1 . A completely analogous behavior has been observed in the case of carbon nanotubes deposited on top of Au electrodes or covered by Ti electrodes [22].…”

Investigation of Porous Zn Growth Mechanism during Zn Reactive Sputter Deposition

“…Metal oxides, in particular ZnO have been selected as materials of choice for such applications due to their exceptionally chemically active surfaces enabling their easy functionalization. Furthermore, a wide array of morphologies has been developed including nanoparticles [1], nanowires [2], nanobelts [3] and more exotic shapes as nanoforests [4]. ZnO nanostructures with porous morphology were recently demonstrated by our group using reactive magnetron Zn sputtering [5].…”

3D-Architected and Integrated Metal Oxide Nanostructures and Beyond Produced by Three-Dimensional Nanotemplate Pulsed Laser Deposition

“…Figure 3(c) shows the CL spectrum at RT for a single ZnO nanobox with w = 200 nm, L = 4 µm, and h = 300 nm. The luminescence line centered at ∼390 nm indicates the near-band-edge (NBE) emission [15][16][17]. The absence of a peak centered at 2.38 eV corresponding to typical green defects [16,18,19] guarantees the high quality of the ZnO nanobox.…”