摘要:
According to one embodiment of the present invention, an integrated circuit including a plurality of resistance changing memory cells is provided. Each memory cell includes: a semiconductor substrate; a select device arranged within the semiconductor substrate; and a memory element being arranged above the semiconductor substrate. The select device is a diode comprising a first semiconductor area of a first conductive type and a second semiconductor area of a second conductive type which are arranged adjacent to each other such that a lateral pn-junction is formed. The first semiconductor area is connected to a word line arranged on or above the semiconductor substrate. The second semiconductor area is connected to the memory element via a conductive connection element.
摘要:
A magneto resistive memory device is fabricated by etching a blanket metal stack comprised of a buffer layer, pinned magnetic layer, a tunnel barrier layer and a free magnetic layer. The problem of junction shorting from resputtered metal during the etching process is eliminated by formation of a protective spacer covering the side of the freelayer and tunnel barrier interface. The spacer is formed following the first etch through the free layer which stops on the barrier layer. After spacer formation a second etch is made to isolate the device. The patterning of the device tunnel junction is made using a disposable mandrel method that enables a self-aligned contact to be made following the completion of the device patterning process.
摘要:
A capacitor electrode is produced with an underlying barrier structure. A barrier incorporation layer is used and a CMP (chemical mechanical polishing) process is employed in order to produce the barrier structure. The capacitor electrode with an underlying barrier structure is produced by depositing a barrier layer on a semiconductor substrate; forming a barrier structure from the barrier layer with a lithographic mask and an etching step; depositing a barrier incorporation layer covering the barrier structure and surrounding regions; and removing the barrier incorporation layer with chemical mechanical polishing until the barrier structure is uncovered, to thereby form the capacitor electrode above the barrier structure.
摘要:
A semiconductor device (100) and method of fabrication thereof, wherein a plurality of first conductive lines (116) are formed in a dielectric layer (112) over a substrate (110), and an insulating cap layer (140) is disposed over the first conductive lines (116) and exposed portions of the dielectric layer (112). The insulating cap layer (140) is patterned and etched to expose stack portions of the first conductive lines (116). A conductive cap layer (144) is deposited over the exposed portions of the first conductive lines (116). A magnetic material stack (118) is disposed over the insulating cap layer (140), and the magnetic material stack is etched to form magnetic stacks. The insulating cap layer (140) and conductive cap layer (144) protect the underlying first conductive line (116) material during the etching processes.
摘要:
The invention relates to a microelectronic structure. In the structure, an oxygen-containing iridium layer is embedded between a silicon-containing layer and an oxygen barrier layer. The iridium layer is especially produced by a sputter process in an oxygen atmosphere with a low oxygen content. The oxygen-containing iridium layer is stale at temperatures up to 800° C. and withstands the formation of iridium silicide upon contact with the silicon-containing layer. Such micro-electronic structures are preferably used in semiconductor memories.
摘要:
A method for fabricating a patterned layer from a layer material. The method includes steps of: providing a substrate with at least one target region and at least one migration region; applying a layer material; adding a material to the layer material; and performing a heat treatment such that the layer material migrates from the migration region to the target region and a layer which is self-aligned and self-patterned with respect to the target region is formed. The method has the advantage that the layer material, which can often only be etched with difficulty, does not have to be patterned directly. The desired structure of the layer is predetermined by preliminarily structuring the substrate into a target region and a migration region, and is produced by the migration of the layer material as a result of the heat treatment.
摘要:
An integrated circuit includes an array of diodes and an electrode coupled to each diode. The integrated circuit includes a layer of resistance changing material coupled to the electrodes and bit lines coupled to the layer of resistance changing material. The layer of resistance changing material provides a resistance changing element at each intersection of each electrode and each bit line.
摘要:
An integrated circuit includes an array of diodes and an electrode coupled to each diode. The integrated circuit includes a layer of resistance changing material coupled to the electrodes and bit lines coupled to the layer of resistance changing material. The layer of resistance changing material provides a resistance changing element at each intersection of each electrode and each bit line.
摘要:
A method of fabricating a memory cell including a solid electrolyte layer doped with metallic material and an electrode layer arranged above the solid electrolyte layer. The method includes doping a solid electrolyte layer with metallic material and forming an electrode layer above the solid electrolyte layer, wherein doping the solid electrolyte layer is carried out before forming the electrode layer.
摘要:
The invention relates to a method for producing ferroelectric capacitors that are structured using the stack principle and that are used in integrated semiconductor memory chips. The individual capacitor modules have an oxygen barrier between a lower capacitor electrode and an electrically conductive plug. At a site where it is not covered by the corresponding oxygen barrier, an unstructured adhesive layer is oxidized by the oxygen arising during the tempering process of the ferroelectric and forms insulating segments at the site in such a way that the lower capacitor electrodes of the ferroelectric capacitors are electrically insulated from one another. This makes it possible to dispense with structuring the adhesive layer. Furthermore, the layer serves as a getter of oxygen and inhibits the diffusion of oxygen to the plug.