Patent ID: 8018020
Filing Date: 2011-09-13
Classification: H01L

Abstract:
1. A Schottky barrier diode comprising: a semiconductor substrate on which surface a semiconductor layer of first conduction type is provided; junction barrier layers including a plurality of semiconductor layers of second conduction type, and provided with a predetermined interval and at a predetermined depth from the surface of the semiconductor layer of the first conduction type; and a metal layer disposed so as to contact the semiconductor layer of first conduction type and the junction barrier layers, wherein: when a backward voltage is applied to the Schottky barrier diode, a width of a depletion layer of a junction between the semiconductor layer of the first conductive type and the semiconductor layers of second conduction type of the junction barrier layers is arranged such that an inside of the junction barrier layers is depleted, and a width w where, N N N V VR: backward applying voltage, w w w ε q: elementary electric charge, k: Boltzmann's constant, and T: temperature.