Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5468258 | Vacuum | 2017 | 15 Pages |
Abstract
In the present work, we report the dependence of lithium-ion (Li+) doping concentration on structure, optical and electrical properties of NiO films fabricated by radio frequency (rf) magnetron sputtering. It was found that the NiO grains were increased with increase in lithium-ion concentration from an anomalous state to a cubic shape following the NaCl-type structure. The NiO films presented highly c-axis preferred orientation with significant (111) diffraction. The samples marked A-C under the lithium-ion concentration of 1 at.%, 3 at.%, and 5 at.% respectively have optical band gap values of 3.72Â eV, 3.61Â eV and 3.47Â eV, respectively. Comparatively, the controllable electrical properties of NiO films can be achieved by the variations of crystal quality arise from the lithium-ion doping concentration.
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
Yang Zhao, Hui Wang, Xiaoyang Gong, Jingge Wang, Hehe Li, Miaomiao Tang, Xinzhong Li,