Patent ID: 6686647
Filing Date: 2004-02-03
Classification: H01L

Abstract:
A Gunn diode, in which a first semiconductor layer of heavily doped n-type InP, an active layer of lightly doped n-type InP and a second semiconductor layer of heavily doped n-type InGaAs are formed on a semiconductor substrate of heavily doped n-type InP in said order, further comprising:a first electrode of smaller area and a second electrode of larger area both formed on the second semiconductor layer to apply voltages to the active layer, and a high resistance region formed at least deeply to the lower surface of the second semiconductor layer by ion implantation and separating a region covered with the first electrode from the other in the second semiconductor layer, so as to let regions under the first electrode in the second semiconductor layer and the active layer work as a Gunn diode.