Quantum magneto transport properties of nanostructure multi quantum wells short wave Infrared detectors

In this paper, we investigated the band structure and quantum magneto transport properties of the In_0.53Ga_0.47As(d₁=100Å)/InP(d₂=70Å) type I multi quantum wells (MQWs) at low temperature. These studies were based on the envelope function and effective mass formalisms. We calculated the effect of d₁, d₂, the band valence offset and temperature on the band gap and the cut-off wavelength of detection. The result of the computed density of states and the position of Fermi level indicate that this sample is quasi two-dimensional system with n-type conductivity. The calculated evolution of the cutoff wavelength with temperature predicts this MQWs can be used as a short-infrared detector. Furthermore, we interpreted theoretically the photoluminescence, the Shubnikov de Haas (SdH) and quantum Hall effects observed by Pusep et al. (paper)