Cryogenic DC characterization of InAs/Al80Ga20Sb self-switching diodes

Abstract

DC characterization of an InAs/Al80Ga20Sb self-switching diode for THz detection is presented at 300 K and 6 K. Compared to 300 K, an enhancement of the diode I-V nonlinearity and associated responsivity was observed under zerobias conditions at 6 K. The intrinsic responsivity was estimated to 490 V/W at 300 K and 4400 V/W at 6 K.