Large scale synthesis and enhanced field emission properties from hybrid CuO/ZnO nanorod.

Abstract

Upper-directionally grown nanorods were synthesized on a large scale by a simple method of direct heating of Cu foil in air. Hybrid CuO/ZnO nanorods were fabricated by ZnO thin film coating using magnetron sputtering. Field emission (FE) measurements of CuO and hybrid CuO/ZnO nanorod films show that they have turn-on field of 3.81 and 3.24 V/microm and a current density of 0.39 and 1.1 microA/cm2 under an applied field of about 6.6 V/microm, respectively. By comparing X-ray photoelectron spectroscopy analysis and the FE properties of two types of samples, we concluded that the narrowing of band gap due to the change of electron binding energy of hybrid CuO/ZnO nanorods effectively improved FE.

Cite this paper

@article{Lee2011LargeSS, title={Large scale synthesis and enhanced field emission properties from hybrid CuO/ZnO nanorod.}, author={Jungwoo Lee and Eunkyung Park and Taehee Park and Jongtaek Lee and Myungmo Sung and Whikun Yi}, journal={Journal of nanoscience and nanotechnology}, year={2011}, volume={11 8}, pages={7299-302} }