Patent ID: 7482621
Filing Date: 2009-01-27
Classification: B82Y,H01L

Abstract:
1. A bistable electrical device that is convertible between a low resistance state and a high resistance state, said device comprising: a first electrode that includes a first electrode surface; a layer of low conductivity material having a first surface and a second surface wherein said first surface of said layer of low conductivity material is in electrical contact with said first electrode surface; a second electrode that includes a second electrode surface; and a buffer layer located between said second electrode surface and the second surface of said layer of low conductivity material, wherein said buffer layer is constructed of a material and a form to provide control of metal ion migration from said second electrode to said layer of low conductivity material when a voltage is applied between said first and second electrodes to thereby provide a bistable behavior of said bistable electrical device, and wherein said bistable electrical device is convertible between a high electrical resistance state and a low electrical resistance state when a first voltage is applied between said first and second electrodes and said bistable electrical device is convertible between said low electrical resistance state and a high electrical resistance state when a second voltage is applied between said first and second electrodes, said second voltage having a greater magnitude than said first voltage, wherein said organic low conductivity material is 2-amino-4,5-imidazoledicarbonitrile.