Theoretical simulation of the barrier T2SLs InAs/InAsSb/B-AlSb longwave detector operating under thermoelectrical cooling

摘要

The paper reports on the barrier longwave infrared nBnn⁺ detector based on InAs/InAsSb (xSb = 0.38) type-II superlattice operating under thermoelectrical cooling ( > 190 K). AlSb was proved to minimize barrier in valence band in analyzed temperature range and assumed architecture. The highest detectivity of the simulated structure was assessed at the level of ~ 10⁹ cmHz^1/2/W at T ~ 230 K assuming immersion contribution.