Development of InAs/InAsSb Type II Strained-Layer Superlattice Unipolar Barrier Infrared Detectors

We recently reported mid-wavelength infrared (MWIR) InAs/InAsSb type II strained-layer superlattice (T2SLS) unipolar barrier detectors and focal-plane arrays with significantly higher operating temperature than InSb. Herein, we document the development leading to the MWIR InAs/InAsSb T2SLS detectors at the NASA Jet Propulsion Laboratory. We also briefly compare the InAs/InAsSb T2SLS with some other approaches.