Patent ID: 7400030

Claim:
A semiconductor Schottky contact comprising: a Mg x Zn 1-x O semiconductor epitaxial film having a ( 11 2 0 ) family of planes, grown on a single crystal substrate having an orientation wherein primary symmetric axis ( 0001 ) of said Mg x Zn 1-x O semiconductor epitaxial film lies on the surface of said substrate, thereby resulting in zero net charge on said Mg x Zn 1-x O film and zero net dipole moment perpendicular to surface of said Mg x Zn 1-x O film; a metal layer deposited on said Mg x Zn 1-x O film to form a Schottky contact, wherein said substrate is R-plane sapphire, ( 11 2 0 ) Al 2 O 3 .