pnp-Type GaAs Inversion-Base Bipolar Transistor (pnp-type GaAs IBT)

Abstract
A pnp-type GaAs inversion-base bipolar transistor was fabricated for the first time. The common emitter current gain obtained was β=1010 at 77 K. By measuring the FET mode operation of the GaAs IBT, it was confirmed that the two-dimensional electron gas really worked as a base of the transistor.