Patent ID: 9099639
Filing Date: 2015-08-04
Classification: H01L

Abstract:
1. A resistance switching material element comprising: a first electrode; a self-rectifying layer directly on the first electrode, the self-rectifying layer including a first dielectric material layer directly on the first electrode and a second dielectric material layer on the first dielectric material layer in a thickness direction of the self-rectifying layer, and the first dielectric material layer and the second dielectric material layer having different conduction band offsets from each other; a resistance switching material layer on the self-rectifying layer to contact the self-rectifying layer, the resistance switching material layer including a first material layer and a second material layer, and the resistance switching material layer being configured to have resistance switching properties due to ionic species transfer between the first and second material layers; and a second electrode directly on the resistance switching material layer, wherein the self-rectifying layer is configured to have a tunneling mechanism that varies according to an applied voltage, and the self-rectifying layer is configured to have direct tunneling properties in which a flow of current is restricted if a first voltage is applied to the resistance switching material element, the self-rectifying layer is configured to have tunneling properties in which the flow of current rapidly increases if a second voltage is applied to the resistance switching material element, and the first voltage is less than the second voltage.