Effect of barrier asymmetry on tunneling current in double barrier quantum well structure

In this paper, the current-voltage characteristics of a double barrier quantum well structure has been studied. The current through the structure has been calculated after obtaining the transmission coefficient using quantum mechanical approach. The effect of barrier height asymmetry as well as barrier width non-uniformity on the tunneling current density has been investigated. The results indicate suitable designs to obtain high current density and desired peak-to-valley ratio.