Patent ID: 6844251

Claim:
A method of improving breakdown voltage of a semiconductor device which includes a Schottky charge transfer junction, such method comprising the steps of: coupling a metal electrode of the semiconductor device to a drift layer of the semiconductor device through a Schottky charge transfer junction, said drift layer being of a first doping type, at least a portion of said metal electrode in direct contact with said drift layer to form the Schottky charge transfer junction; and providing a junction termination layer of a relatively constant thickness in direct contact with the drift layer of the semiconductor device and laterally adjacent the metal electrode along an outside edge of the charge transfer junction; said junction termination layer extending outwards from the Schottky charge transfer junction, said junction termination layer having a controlled length and being doped with a doping material of a second doping type in sufficient concentration to provide a charge depletion region laterally adjacent the outside edge of the Schottky charge transfer junction when the Schottky charge transfer junction is reverse biased.