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US 12,513,913 B2Granted
Selective element doped with chalcogen element
AssigneeIndustry-University Cooperation Foundation Hanyang University
InventorJin Pyo Hong
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Abstract
Disclosed is a selective device having high selectivity and temperature stability. The selective device has a doped insulating layer. The doped insulating layer has a metal oxide and a chalcogen element introduced into the metal oxide. Metal oxide has amorphous structure with minimized defects, and the introduced chalcogen elements form a conductive channel at a specific voltage and realize bi-directional switching characteristics.
Claims7
A selective device comprising:
- a lower electrode;
- a doped insulating layer formed on the lower electrode and composed of a metal oxide doped with a chalcogen element;
- and
- an upper electrode formed on the doped insulating layer,
- wherein the metal oxide is HfO2 or Ta2O5, and the chalcogen element is Te or Se,
- wherein the metal oxide has an amorphous structure, and the chalcogen element exists without reacting with metal or oxygen constituting the metal oxide and has unshared electron pair so that the unshared electron pair acts as a defect in the doped insulating layer.
3 more elements
A selective device comprising:
- a lower electrode;
- a lower insulating layer formed on the lower electrode;
- a doped insulating layer formed on the lower insulating layer and composed of a metal oxide doped with a chalcogen element;
- an upper insulating layer formed on the doped insulating layer and made of the same material as the lower insulating layer;
- and
- an upper electrode formed on the upper insulating layer,
- wherein the metal oxide is HfO2 or Ta2O5, and the chalcogen element is Te or Se,
- wherein the metal oxide has an amorphous structure, and the chalcogen element exists without reacting with metal or oxygen constituting the metal oxide and has unshared electron pair so that the unshared electron pair acts as a defect in the doped insulating layer.
5 more elements
Dependencies are inferred from the claim text.