“…If the Schottky barrier is equal or close to zero, an ohmic contact is expected. The current can flow inside or outside the device with minimum opposition, and the relationship between electrical potential (V) and current (I) is governed by Ohm , s law (Salinas et al, 2006;Sze, 1990), the contact is considered ohmic. If the barrier height is not close to zero, a rectifying contact can be expected.…”