Keywords: hydrogen effect, zinc oxide, hydrogen-doped ZnO films, cathode luminescence, electrical properties, optical properties
The effects of hydrogen on the electrical and optical properties of ZnO
Hydrogen atoms introduced into oxides are considered to modify the electronic structure of the compounds. The effect of hydrogen on the electrical and optical properties of zinc oxide (ZnO) films was examined. The electronic state of hydrogen-doped ZnO films was studied by Ultraviolet Photoelectron Spectroscopy (UPS) and cathode luminescence measurements. Hydrogen introduced in ZnO forms impurity donor states in the band gap of the compounds and shows a specific change in the material properties.