Patent ID: 7339209

Claim:
An integrated semiconductor structure including a heterojunction bipolar transistor and a Schottky diode, the semiconductor structure comprising a substrate; the heterojunction bipolar transistor comprising a transistor collector contact layer overlying and contacting the substrate, a transistor collector ohmic contact to the transistor collector contact layer, a transistor collector layer overlying and contacting the transistor collector contact layer, a transistor base layer overlying and contacting the transistor collector layer, a transistor base ohmic contact to the transistor base layer, a transistor emitter structure overlying and contacting the transistor base layer, and a transistor emitter ohmic contact overlying and contacting the transistor emitter structure; and the Schottky diode comprising an emitter layer overlying and contacting the transistor base layer, a diode contact layer overlying and contacting the emitter layer, a diode cathode ohmic contact to the diode contact layer, a Schottky diode barrier layer structure overlying and contacting the diode contact layer, and a diode anode contact to the Schottky diode barrier layer structure.