Method to improve yield and simplify operation of polymer memory cells
View Patent ↗Systems and methodologies are provided for simplifying a polymer memory cell's operation by employing a post polymer growth treatment to form ionic or super ionic metal compounds therein. Such post polymer growth treatment facilitates distribution and mobility of metal ions (or charged metallic molecules) within an active layer of the polymer memory cell, and mitigates (or eliminates) a need for initialization procedures. Moreover, the post treatment of the present invention can also facilitate controlling a distribution of various thresholds (e.g., write and erase threshold), and set them to predetermined values Accordingly, variability in threshold values of polymer memory cells that can result from initialization processes can be mitigated (or eliminated), and thicker polymer layers can be employed without an initialization penalty.
1. A memory device comprising:
an active layer with at least one of a metal particle and a metal containing molecular group (MCMG) that changes a state based on a migration of ions therefrom when subject to at least one of an external electric field and light radiation, the active layer treated with a compound that reacts with the at least one of the metal particles and the MCMG to form at least one of a metal ion and at least one of a charged chalcocide and a disparate metallic molecule in the active layer such that a need for an initialization process is at least one of mitigated and eliminated;
at least one of a passive layer and a superionic layer that facilitates supply of ions to the active layer; and
the active layer and at least one of the passive layer and the superionic layer are post treated with a compound comprising at least one of ammonium sulfate (NH 4 ) 2 S, ammonium selenide (NH 4 ) 2 Se, hydrogen sulfide (H 2 S), hydrogen selenide (H 2 Se), and hydrogen telluride (H 2 Te).
2. The memory device of claim 1 , the active layer is a polymer layer.
3. The memory device of claim 1 , the active layer is formed via a CVD process.
4. The memory device of claim 1 , the active layer is comprised of at least one redox active metal, wherein the redox active metal includes at least one of: a metallocenes complex and a polypyridine metal complex.
5. The memory device of claim 1 , the active layer comprises at least one of: polyaniline, polythiophene, polypyrrole, polysilane, polystyrene, polyfuran, polyindole, polyazulene, polyphenylene, polyfluorene, polypyridine, polybipyridine, polyphthalocyanine, polysexithiofene, poly(siliconoxohemiporphyrazine), poly(germaniumoxohemiporphyrazine), and poly(ethylenedioxythiophene) or copolymers thereof.
6. The memory device of claim 1 , the active layer comprises at least one of: hydrocarbons; organic molecules with donor and acceptor properties, metallo-organic complexes; porphyrin, phtalocyanine, and hexadecafluorophthalocyanine.
7. The memory device of claim 1 , the active layer is comprised of at least one organic molecule with a donor acceptor property, wherein the organic molecule includes at least one of: N-Ethylcarbazole, tetrathiotetracene, tetrathiofulvalene, tetracyanoquinodimethane, tetracyanoethylene, cloranol, and dinitrophenyl.
8. The memory device of claim 1 , the active layer is comprised of at least one metallo-organic complex, wherein the metallo-organic complex includes at least one of bisdiphenylglyoxime, bisorthophenylenediimine, and tetraaza-tetramethylannulene.
9. The memory device of claim 1 , the active layer comprises organic material selected from the group comprising of polyacetylene, polyphenylacetylene, polydiphenylacetylene, polyaniline, poly(p-phenylene vinylene), poly(phenylene), poly(fluorene), polythiophene, polyporphyrins, porphyrinic macrocycles, thiol derivatized polyporphyrins, polymetallocenes, polyferrocenes, polyphthalocyanines, polyvinylenes, and polystiroles.
10. The memory device of claim 1 , the active layer comprises material selected from the group comprising of electric dipole elements, polymer ferroelectrics clusters, non-organic ferro-electrics, salts, alkalis, acids, and water molecules.