Patent ID: 8766234

Claim:
A selector device comprising a first layer, wherein the first layer is operable as a first electrode; a second layer disposed on the first layer, wherein the second layer comprises a dielectric layer, wherein the second layer comprises a material having a leakage current density less than 10 3 A/cm 2 at 2 V; a third layer, wherein the third layer comprises a dielectric layer, wherein the third layer comprises a material different from that of the second layer, wherein the third layer comprises a material having a leakage current density greater than 10 6 A/cm 2 at 2 V; a fourth layer, wherein the fourth layer comprises a dielectric layer, wherein the fourth layer comprises a material having a leakage current density less than 10 3 A/cm 2 at 2 V; a fifth layer, wherein the fifth layer is operable as a second electrode, wherein a Schottky barrier between the fifth layer and the fourth layer is higher than 1 eV, wherein a Schottky barrier between the first layer and the second layer is higher than 1 eV.