Reversible non-volatile switch based on a TCNQ charge transfer c

Details Reversible non-volatile switch based on a TCNQ charge transfer c Reversible non-volatile switch based on a TCNQ charge transfer c

1990-12-21

1993-12-21

Crane, Sara W.

Active solid-state devices (e.g., transistors, solid-state diode

Organic semiconductor material

257 2, H01L 2928

Patent

active

052723593

ABSTRACT:
A solid-state synaptic memory matrix (10) having switchable weakly conductive connections at each node (24) whose resistances can be selectably increased or decreased over several orders of magnitude by control signals of opposite polarity, and which will remain stable after the signals are removed, comprises an insulated substrate (16), a set of electrical conductors (14) upon which is deposited a layer (18) of an organic conducting polymer, which changes from an insulator to a conductor upon the transfer of electrons, such as polymerized pyrrole doped with 7,7,8,8-tetracyanoquinodimethane (TCNQ), covered by a second set of conductors (20) laid at right angles to the first.

REFERENCES:
patent: 3341362 (1967-09-01), Hacskaylo
patent: 3519999 (1970-07-01), Gregor
patent: 4507672 (1985-03-01), Potember et al.
patent: 4761677 (1988-08-01), Sasaki
patent: 4806995 (1989-02-01), Day et al.
Day et al, "Synthesis of Aliphatic Polymers . . . " Jour. of Polymer Science, Part A, vol. 24, 1986, pp. 645-654.
Reynolds, "Advances in the Chemistry of Conducting Organic Polymers," Jour. of Molecular Electronics, vol. 2, 1986, pp. 1-21.

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