Thermoelectrically Cooled nBn T2SLs InAs/InAsSb/B-AlAsSb MWIR Detector

The paper reports on the nBn barrier mid-wave infrared InAs/InAsSb $(x_{Sb}=0.4)$ type-II superlattice detector operating in thermoelectrical cooling condition. AlAsSb $(y_{Sb}=0.975)$ was proved to be proper material not introducing extra barriers in valence band in analysed temperature range in nBn architectures. Detectivity ~1010 cmHz1/2/W at 200 K is reported without immersion lens.