摘要:
A method of manufacturing the semiconductor device includes sequentially forming first to third mold layer patterns on a substrate and spaced apart from each other, forming a first semiconductor pattern between the first mold layer pattern and the second mold layer pattern, and a second semiconductor pattern between the second mold layer pattern and the third mold layer pattern, forming a first trench between the first mold layer pattern and the third mold layer pattern by removing a portion of the second mold layer pattern and portions of the first and second semiconductor patterns, depositing a material for a lower electrode conformally along side and bottom surfaces of the first trench, and forming first and second lower electrodes separated from each other on the first and second semiconductor patterns, respectively, by removing a portion of the material for a lower electrode positioned on the second mold layer pattern.
摘要:
Provided are methods of forming a material layer by chemically adsorbing metal atoms to a substrate having anions formed on the surface thereof, and a method of fabricating a memory device by using the material layer forming method. Accordingly, a via hole with a small diameter can be filled with a material layer without forming voids or seams. Thus, a reliable memory device can be obtained.
摘要:
A phase change memory device includes an impurity region on a substrate, the impurity region being in an active region, a metal silicide pattern at least partially buried in the impurity region, a diode on the impurity region, a lower electrode on the diode, a phase change layer pattern on the lower electrode, and an upper electrode on the phase change layer pattern.
摘要:
Provided is a non-volatile memory device including a bottom electrode disposed on a substrate and having a lower part and an upper part. A conductive spacer is disposed on a sidewall of the lower part of the bottom electrode. A nitride spacer is disposed on a top surface of the conductive spacer and a sidewall of the upper part of the bottom electrode. A resistance changeable element is disposed on the upper part of the bottom electrode and the nitride spacer. The upper part of the bottom electrode contains nitrogen (N).
摘要:
Provided are methods of fabricating a semiconductor device including a phase change layer. Methods may include forming a dielectric layer on a substrate, forming an opening in the dielectric layer and depositing, on the substrate having the opening, a phase change layer that contains an element that lowers a process temperature of a thermal treatment process to a temperature that is lower than a melting point of the phase change layer. Methods may include migrating a portion of the phase change layer from outside the opening, into the opening by the thermal treatment process that includes the process temperature that is lower than the melting point of the phase change layer.
摘要:
A method of forming a ferroelectric layer is provided. A metal-organic source gas is provided into a chamber into which an oxidation gas is provided for a first time period to form ferroelectric grains on a substrate. A ferroelectric layer is formed by performing at least twice a step of providing a metal-organic source gas into the chamber during the first time period using a pulse method to grow the ferroelectric grains.
摘要:
Provided are apparatus and methods for forming phase change layers, and methods of manufacturing a phase change memory device. A source material is supplied to a reaction chamber, and purges from the chamber. A pressure of the chamber is varied according to the supply of the source material and the purge of the source material.
摘要:
The phase change memory device includes a first electrode and a second electrode and a first phase change material pattern and a second phase change material pattern interposed between the first electrode and the second electrode, wherein the first and second phase change material patterns have respectively different electrical characteristics.
摘要:
Provided are FeRAM device constructions and fabrication methods that provide for the direct connection of metal patterns to ferroelectric capacitors. The FeRAM device constructions utilize a combination of one or more barrier layers incorporated in conductive plugs, barrier layers incorporated in primary conductive patterns or conductive patterns formed using one or more noble metals to suppress parametric drift associated with conventional FeRAM constructions.
摘要:
A semiconductor device includes a switching device disposed on a substrate. A buffer electrode pattern is disposed on the switching device. The buffer electrode pattern includes a first region having a first vertical thickness, and a second region having a second vertical thickness smaller than the first vertical thickness. A lower electrode pattern is disposed on the first region of the buffer electrode pattern. A trim insulating pattern is disposed on the second region of the buffer electrode pattern. A variable resistive pattern is disposed on the lower electrode pattern.