摘要:
An integrated circuit device. The integrated circuit device includes a semiconductor substrate having a surface region. A gate dielectric layer overlies the surface region of the substrate. The device includes a MOS device having a p+ active region. The p+ active region forms a first electrode for a resistive switching device. The resistive switching device includes an amorphous silicon switching material overlying the p+ active region and a metal electrode overlies the first metal conductor structure. The metal electrode includes a metal material, upon application of a positive bias to the metal electrode, forms a metal region in the amorphous silicon switching material. The MOS device provides for a select transistor for the integrated circuit device.
摘要:
A switching device includes a substrate; a first electrode formed over the substrate; a second electrode formed over the first electrode; a switching medium disposed between the first and second electrode; and a nonlinear element disposed between the first and second electrodes and electrically coupled in series to the first electrode and the switching medium. The nonlinear element is configured to change from a first resistance state to a second resistance state on application of a voltage greater than a threshold.
摘要:
A non-volatile memory device includes a first electrode, a resistive switching material stack overlying the first electrode. The resistive switching material stack comprising a first resistive switching material and a second resistive switching material. The second resistive switching material overlies the first electrode and the first resistive switching material overlying the second resistive switching material. The first resistive switching material is characterized by a first switching voltage having a first amplitude. The second resistive switching material is characterized by a second switching voltage having a second amplitude no greater than the first switching voltage. A second electrode comprising at least a metal material physically and electrically in contact with the first resistive switching material overlies the first resistive switching material.
摘要:
A non-volatile resistive switching memory device. The device includes a first electrode, a second electrode, a switching material in direct contact with a metal region of the second electrode, and a resistive material disposed between the second electrode and the switching material. The resistive material has an ohmic characteristic and a resistance substantially the same as an on state resistance of the switching device. The resistive material allows for a change in a resistance of the switching material upon application of voltage pulse without time delay and free of a reverse bias after the voltage pulse. The first voltage pulse causes a programming current to flow from the second electrode to the first electrode. The resistive material further causes the programming current to be no greater than a predetermined value.
摘要:
A method of forming a two terminal device. The method includes forming a first dielectric material overlying a surface region of a substrate. A bottom wiring material is formed overlying the first dielectric material and a switching material is deposited overlying the bottom wiring material. The bottom wiring material and the switching material is subjected to a first patterning and etching process to form a first structure having a top surface region and a side region. The first structure includes at least a bottom wiring structure and a switching element having a first side region, and a top surface region including an exposed region of the switching element. A second dielectric material is formed overlying at least the first structure including the exposed region of the switching element. The method forms an opening region in a portion of the second dielectric layer to expose a portion of the top surface region of the switching element. A top wiring material including a conductive material is formed overlying at lease the opening region such that the conductive material is in direct contact with the switching element. A second etching process is performed to form at least a top wiring structure. In a specific embodiment, the side region of the first structure including a first side region of the switching element is free from a contaminant conductive material from the second etching process.
摘要:
A resistive switching device. The device includes a substrate and a first dielectric material overlying a surface region of the substrate. The device includes a first electrode overlying the first dielectric material and an optional buffer layer overlying the first electrode. The device includes a second electrode structure. The second electrode includes at least a silver material. In a specific embodiment, a switching material overlies the optional buffer layer and disposed between the first electrode and the second electrode. The switching material comprises an amorphous silicon material in a specific embodiment. The amorphous silicon material is characterized by a plurality of defect sites and a defect density. The defect density is configured to intrinsically control programming current for the device.
摘要:
A method for programming a two terminal resistive memory device, the method includes applying a bias voltage to a first electrode of a resistive memory cell of the device; measuring a current flowing through the cell; and stopping the applying of the bias voltage if the measured current is equal to or greater than a predetermined value.
摘要:
A resistive switching device. The device includes a first electrode comprising a first metal material overlying the first dielectric material and a switching material comprising an amorphous silicon material. The device includes a second electrode comprising at least a second metal material. In a specific embodiment, the device includes a buffer material disposed between the first electrode and the switching material. The buffer material provides a blocking region between the switching material and the first electrode so that the blocking region is substantially free from metal particles from the second metal material when a first voltage is applied to the second electrode.
摘要:
A method for programming a two terminal resistive memory device, the method includes applying a bias voltage to a first electrode of a resistive memory cell of the device; measuring a current flowing through the cell; and stopping the applying of the bias voltage if the measured current is equal to or greater than a predetermined value.
摘要:
A method of suppressing propagation of leakage current in an array of switching devices. The method includes providing a dielectric breakdown element integrally and serially connected to a switching element within each of the switching device. A read voltage (for example) is applied to a selected cell. The propagation of leakage current is suppressed by each of the dielectric breakdown element in unselected cells in the array. The read voltage is sufficient to cause breakdown in the selected cells but insufficient to cause breakdown in the serially connected, unselected cells in a specific embodiment. Methods to fabricate of such devices and to program, to erase and to read the device are provided.