Three-terminal tunnelling device.

摘要

Three-terminal tunneling devices using three different bandgap semiconductor materials to segregate controlling carriers from controlled carriers are disclosed. Preferred embodiments include narrow bandgap quantum wells (52) and medium bandgap emitters (62) so that narrow bandgap bases (60) may inject and withdraw controlling electrons to and from a discrete energy level in the well (52) by tunneling with the controlled electron current tunneling from emitter (62) to collector (58) through a higher energy level in the well (52) or so that medium bandgap bases may control holes in the well with only a small forward bias on the emitter-base junction and thereby control electrons tunneling through the well from emitter to collector.