Memory device with improved data retention
AssigneeSpansion LLC
InventorsZhida Lan, Sameer Haddad, Steven Avanzino
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Abstract
The present memory device include first and second electrodes, a passive layer between the first and second electrodes, and an active layer between the first and second and into which ions from the passive layer may be provided, and from which the ions may be provided into the passive layer. The active layer is made up of a base material and an impurity therein. The combined the material and impurity have a lower diffusion coefficient than the base material alone.
Claims23
A memory device comprising:
- first and second electrodes;
- a passive layer between the first and second electrodes;
- and
- an active layer between the first and second electrodes;
- the active layer comprising first and second materials, the first material having a first diffusion coefficient, the combined first and second materials having a second diffusion coefficient different from the first diffusion coefficient.
The memory device of claim 7 wherein the second material comprises aluminum.
A memory device comprising:
- first and second electrodes;
- a passive layer between the first and second electrodes;
- an active layer between the first and second electrodes and into which a charged specie from the passive layer may be provided, and from which said charged specie may be provided into the passive layer;
- the active layer comprising a first material and a second material, the first material having a first diffusion coefficient, the combined first and second materials having a second diffusion coefficient different from the first diffusion coefficient.
A method of fabricating a memory device comprising:
- providing a first electrode;
- providing a passive layer on the first electrode;
- providing a material on the passive layer, the material having a first diffusion coefficient;
- introducing an impurity into the material, the combined material and impurity providing an active layer, the combined material and impurity having a second diffusion coefficient different from the first diffusion coefficient;
- and
- providing a second electrode on the active layer.
Dependencies are inferred from the claim text.