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Tunneling of electrons through the barriers in heterostructures has been, within unified transfer matrix approach. The effect of barrier width the transmission coefficient of the electrons has been investigated for pairs of semi conducting materials that are gaining much importance. These pairs include CdS/CdSe, AlGaAs/GaAs and InAs/AlSb. Barrier have been reduced from 20nm to 5nm to observe the effect of scaling tunneling properties. Material depended is highlighted for electrons with varying from below the barrier height to above it. The electron mass inside the barrier and the well are often different. The results that the coupling effect leads to significant changes on the transmission. . The effective-mass dependant transmission coefficient has been with respect to electron energy. The computation is based on the matrix method by using MATLAB.
Gain et al. (Tue,) studied this question.