Importance

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Abstract

Provided are selector elements with active components comprising insulating matrices and mobile ions disposed within these insulating matrices. Also provided are methods of operating such selector elements. The insulating matrices and mobile ions may be formed from different combinations of materials. For example, the insulating matrix may comprise amorphous silicon or silicon oxide, while mobile ions may be silver ions. In another example, the active component comprises copper and germanium, selenium, or tellerium, e.g., Se₆₁Cu₃₉, Se₆₇Cu₃₃, or Se₅₆Cu₄₄. The active component may be a multilayered structure with a variable composition throughout the structure. For example, the concentration of mobile ions may be higher in a center of the structure, away from the electrode interfaces. In some embodiments, outer layers may be formed from Ge₃₃Se₂₄Cu₄₇, while the middle layer may be formed from Ge₄₇Se₂₉Cu₂₄.

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First Claim