Dark Current and Electron Activation Energy in Quantum Brag Mirror Detectors (QBMDs)

This work presents a study on the dark current of Quantum Bragg Mirrors Detectors based on In
0.53
Ga
0.47
As/In
0.52
Al
0.48
As heterostructures. Three devices were investigated, with the first one having a single quantum well that serves as a reference. The other two have symmetric superlattices acting as quantum Bragg mirrors. The dark current was measured for each device as a function of the applied bias voltage, at temperatures ranging from 100K to 300K. The influence of quantum Bragg mirrors on the dark current and the estimation of activation energy of each device were analysed using Levine’s model.