| 摘要 |
PROBLEM TO BE SOLVED: To provide a new-concept ohmic contact system with excellent electrical, optical, thermal and structural features, to increase an effective carrier density, to reduce a Schottky barrier by adjusting an energy bandgap between substances, and high in permeability.SOLUTION: A thin-film electrode forms an ohmic contact in a light emitting diode or in a laser diode. The thin-film electrode includes a first electrode layer laminated on a p-type gallium nitride layer and containing an Ni-X solid solution, and a second electrode layer laminated on the first electrode layer and containing at least one element selected from a group of Au, Pt, Pd, Ni, Ru, Rh, Re, C, Cu and Ir. |
