Patent ID: 8716047

Claim:
A method for producing a transparent conductive electrode comprising TiO 2 contacting with a p-type Group III nitride-based compound semiconductor layer, the method comprising: laminating an amorphous TiO 2 layer on the p-type Group III nitride-based compound semiconductor layer, said laminating being performed by a sputtering method and without heating; and thermally treating the amorphous TiO 2 layer at 400° C. to 800° C. to crystallize the amorphous TiO 2 layer and form an anatase TiO 2 layer, wherein said sputtering method comprises passing through a gas including oxygen and an inert gas, and wherein the p-type Group III nitride-based compound semiconductor layer is cooled to a temperature equal to or lower than a room temperature for laminating the amorphous TiO 2 layer after a film deposition of the amorphous TiO 2 layer.