Patent ID: 10923534

Abstract:
Provided is a rectifying element that prevents erroneous writing and an erroneous operation and that is substituted for a select transistor; a rewritable semiconductor device that uses a nonvolatile switch including the rectifying element and having excellent reliability, a small area, and low power consumption has a stacked structure of a first electrode 11, a first buffer layer 14, a rectifying layer 13, a second buffer layer 15, and a second electrode 12; and the rectifying layer 13 comprises a first silicon nitride layer 16 having a high nitrogen content (50 atm % or more) and second silicon nitride layers 17A and 17B having a lower nitrogen content than the first silicon nitride layer 16 (50 atm % or less), wherein the second silicon nitride layers 17A and 17B are in contact with the first and second buffer layers (14, 15), respectively, and the first silicon nitride layer 16 is sandwiched between the second silicon nitride layers 17A and 17B.