Resonant tunneling spectroscopy in Schottky diodes

Abstract
A new method to detect deep centers close to the interface in metal‐semiconductor contacts is reported. The presence of humps in the logIFVF characteristics attributed to resonant tunneling contributions to the total forward current is investigated via the slope changes in the logIFVF plots. Although the relation between the voltage VFm at which the minimum of d2 logIF/ dV2F occurs, and the energy position of the levels causing the resonant tunneling current is not easy to calculate, this new method represents a powerful means to detect traps lying near the interface.