Formation, Charge Transfer, Structural and Morphological Characteristics of ZnO Fractal-Percolation Nanosystems
Abstract
Structural and morphological characteristics of ZnO nanosystems in the form of three-dimensional network-like systems have been investigated. Current-voltage ( I- V) characteristics and charge transfer parameters of ZnO fractal-percolation nanosystems have been studied both in air and in vacuum at different temperatures and voltage sweep rates. The charge transfer characteristics show the presence of R αCi C αi chains in the nanosystems. The RC chains are formed because the Debye screening length has the same order of magnitude as the local values of ZnO nanowires radii. Gas-sensing tests based on I- V characteristics investigation have shown a possibility of distinguishing between reducing gases such as CH4 or C2H5OH.
- Publication:
-
Journal of Electronic Materials
- Pub Date:
- May 2019
- DOI:
- 10.1007/s11664-019-06977-2
- Bibcode:
- 2019JEMat..48.2788P
- Keywords:
-
- ZnO nanowires;
- gas sensor;
- current-voltage characteristics;
- charge transfer;
- reducing gas