Patent ID: 7605047

Claim:
A method for integrating two bipolar transistors in a semiconductor body, the method comprising the steps of: providing, for a first bipolar transistor, a first emitter semiconductor region, a first base semiconductor region, and a first collector semiconductor region; applying a recombination layer to the first bipolar transistor, which is adjacent to a first emitter semiconductor region or a first collector semiconductor region and is formed so that charge carriers recombine on the recombination layer; and providing a second bipolar transistor on the recombination layer, the second bipolar transistor including a second emitter semiconductor region, a second base semiconductor region, and a second collector semiconductor region, wherein the second bipolar transistor is provided on the recombination layer so that the second emitter semiconductor region is adjacent to the recombination layer if the first collector semiconductor region is adjacent to the recombination layer, and the second collector semiconductor region is adjacent to the recombination layer if the first emitter semiconductor region is adjacent to the recombination layer.