ZNO NANOSTRUCTURE: A REVIEW ON THEIR GROWTH AND STRUCTURAL PROPERTIES BY THERMAL EVAPORATE AND CHEMICAL VAPOR DEPOSITION METHODS

Abstract

In the past several decades, One-dimensional (1D) Zinc Oxide (ZnO) nanostructure was a unique material and ZnO has been extensively and intensively studied. Also, ZnO shows semiconducting and piezoelectric binary properties. Using of different techniques, nanowires, nanobelts, nanorings and nanosprings of ZnO had been fabricated under specific growth  conditions. Since, ZnO has a wide band gap (3.37 eV); large exciton binding energy (60 meV) and it could lead to lasing action based on exciton recombination. ZnO is one of the materials that has extraordinary physical and chemical properties, also for current and future it would be different electronic and optoelectronic device applications. This paper reviews the different  nanostructures of ZnO grown by two technique, for example, thermal evaporate and chemical vapor deposition also, comparison with together their corresponding growth mechanisms. The application of ZnO nanowire as nano-sensors and field effect transistors is demonstrated.

Keywords: Zinc oxide, Nanostructure, Growth ZnO, Thermal Evaporation, Chemical Vapor Deposition