OMCVD-grown InP/GaInAs heterojunction bipolar transistors

We report the growth and fabrication of the first InP/ GaInAs heterojunction bipolar transistor by OMCVD. Fabricated transistors exhibited near-ideal emitter-base junction electrical characteristics over ten orders of magnitude, enabling us to obtain transistor current gains as high as 5000 at current densities as low as 1000 A cm−2. This is the highest current gain reported for this material system.