The Effect of Quantum Interferences on Emitter Current of Resonant Tunneling Diode and A New Definition for Quantum Capacitance

In this article, the effect of quantum interference between emitter and well electrons in resonant tunneling diode on the amount and direction of emitter current has been discussed. We have shown that the mentioned phenomenon has a considerable effect on diode time behavior. Furthermore, we have compared the results of this new model and the last presented one for the frequency response of diode and we have shown that the new model has a better confirmation by experimental data and a wrong negative sign wh ich has been entered in parameters of last papers will be resolved in new model. Then the exact meaning of quantum capacitance has been discussed and we have shown that the term which is known as quantum capacitance is just a simple storage capacitance and has not any quantum specification to get the “quantum” prefix, where the new model leads to a real quantum capacitance.