Patent ID: 7741147

Claim:
A method of fabricating a semiconductor structure to include a Schottky barrier in which a population of mobile p-type dopants are disposed within a bulk or epitaxial metal oxide structure, comprising the steps of: elevating the temperature of the metal oxide structure; creating an electric field within a first selected region of the metal oxide structure such that at least a portion of the mobile p-type dopants migrate from a second selected region of the structure which is outside said electric field toward said first selected region of the structure within said electric field, thereby creating a depletion region in said second selected region; and removing the electric field and lowering the temperature of the metal oxide structure such that the migrated mobile p-type dopants remain in their migrated locations, whereby at least a portion of said second selected region becomes one portion of a Schottky barrier, and further whereby exposure of the structure to light in order to cause the mobile p-type dopants to migrate is not performed.