Patent ID: 7700969
Filing Date: 2010-04-20
Classification: H01L

Abstract:
1. A semiconductor device exhibiting an interband tunneling characteristic, the semiconductor device comprising: an n-type layer having a conduction band edge; a tunneling barrier layer having a bandgap, the tunneling barrier layer disposed on the n-type layer; and a p-type layer having a valence band edge, the p-type layer disposed on the tunneling barrier layer; and where a Fermi level of the device, when no bias voltage is applied, is close in energy to the conduction band edge of the n-type layer and the valence band edge of the p-type layer; and where the Fermi level lies in the bandgap of the tunneling barrier layer; wherein the n-type layer comprises n doped InAs, the tunneling barrier layer comprises AlSb, and the p-type layer comprises GaSb, and wherein a AlGaSb layer is formed between the tunneling barrier layer and the p-type layer.