Switchable electronic device and method of switching said device
AssigneeCambridge Display Technology Limited
InventorsNeil Greenham, Jianpu Wang
Life of this patent
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Abstract
A switchable electronic device comprises a hole blocking layer and a layer comprising a conductive material between first and second electrodes, wherein the conductivity of the device may be irreversibly switched upon application of a current having a current density of less than or equal to 100 A cm−2 to a conductivity at least 100 times lower than the conductivity of the device before switching. The conductive material is a doped organic material such as doped optionally substituted poly(ethylene dioxythiophene).
Claims40
A switchable electronic device comprising a hole blocking layer and a layer comprising a conductive material between first and second electrodes, wherein the conductivity of the device is irreversibly switched upon application of a current having a current density of less than or equal to 100 A cm−2 to a conductivity at least 100 times lower than the conductivity of the device before switching.
A method of forming an irreversibly switched electronic device wherein conductivity of the device before switching is at least 100 times higher than conductivity of the device after switching, the device comprising a hole blocking layer and a conductive layer comprising a switchable conductive material between first and second electrodes, the method comprising applying an electrical current density of less than or equal to 100 A cm−2 to the device.
A switchable or switched electronic device comprising a hole blocking layer and a layer comprising a conducting material between first and second electrodes, wherein the highest occupied molecular orbital (HOMO) level of the hole blocking layer is at least 1 eV below the HOMO level of the conducting material.
An electronic device that is switchable from a first state having high conductivity to a second state having lower conductivity comprising a first electrode layer, a first hole blocking layer over the first electrode layer, a layer comprising a conductive material over the first hole blocking layer;
- a second hole blocking layer over the layer comprising a conductive material;
- and a second electrode layer over the second hole blocking layer.
A method of forming an electronic device comprising forming a hole blocking layer and a layer comprising a conductive material between first and second electrodes layers, the device being switchable from a first state having high conductivity to a second state having lower conductivity, wherein the hole blocking layer and the layer comprising the conductive material are deposited from a solution.
Dependencies are inferred from the claim text.