Patent ID: 8207520
Filing Date: 2012-06-26
Classification: H01L

Abstract:
1. A programmable crosspoint device with an integral diode comprises: a first crossbar ; a second crossbar; a metallic interlayer; a switching oxide layer interposed between the first crossbar and the metallic interlayer, the switching oxide layer having a low resistance state and high resistance state; and an integral diode being interposed between the second crossbar layer and the metallic interlayer, the integral diode including a crystalline titanium oxide layer having a dopant concentration defining an Ohmic interface at one of the second crossbar layer or the metallic interlayer, the crystalline titanium oxide layer defining a rectifying interface at the other of the second crossbar layer or the metallic interlayer, the integral diode being configured to limit the flow of leakage current through the programmable crosspoint device in one direction.