摘要:
Provided are semiconductor memory devices and the methods of fabricating the same. The method may include forming a plurality of diode patterns in each of a plurality of first trenches, each of the plurality of first trenches including at least two active regions, the plurality of diode patterns occupying a plurality of spaces, treating the plurality of diode patterns to form a plurality of semiconductor patterns in each of the plurality of spaces, removing portions of the plurality of semiconductor patterns to form a recess in each of the plurality of spaces, treating the of the plurality of semiconductor patterns to form a plurality of diodes in each of the plurality of spaces, forming a bottom electrode on each of the plurality of diodes, forming a plurality of memory elements on each of the bottom electrodes, and forming a plurality of upper interconnection lines on the plurality of memory elements.
摘要:
Provided are semiconductor memory devices and the methods of fabricating the same. The method may include forming a plurality of diode patterns in each of a plurality of first trenches, each of the plurality of first trenches including at least two active regions, the plurality of diode patterns occupying a plurality of spaces, treating the plurality of diode patterns to form a plurality of semiconductor patterns in each of the plurality of spaces, removing portions of the plurality of semiconductor patterns to form a recess in each of the plurality of spaces, treating the of the plurality of semiconductor patterns to form a plurality of diodes in each of the plurality of spaces, forming a bottom electrode on each of the plurality of diodes, forming a plurality of memory elements on each of the bottom electrodes, and forming a plurality of upper interconnection lines on the plurality of memory elements.
摘要:
A phase changeable material layer usable in a semiconductor memory device and a method of forming the same are disclosed. The method includes forming a plasma in a chamber having a substrate disposed therein, providing a first source gas including a germanium based material to form a first layer including the germanium based material on the substrate while maintaining the plasma in the chamber, providing a second source gas including a tellurium based material to react with the first layer to form a first composite material layer including a germanium-tellurium composite material on the substrate while maintaining the plasma in the chamber, providing a third source gas including an antimony based material to form a second layer including the antimony based material on the first composite material layer while maintaining the plasma in the chamber, and providing a fourth source gas including tellurium based material to react with the second layer including antimony based material to form a second composite material layer including an antimony-tellurium composite material on the first composite material layer. Accordingly, the phase changeable material layer may be formed at a low temperature and power to have desirable electrical characteristics.
摘要:
Provided is a method of forming a semiconductor device. The method can include loading a semiconductor substrate into semiconductor equipment. A base layer can be formed on the loaded semiconductor substrate by performing a base deposition process using a base source material. A first silicon layer can be formed on the base layer to a greater thickness than the base layer by performing a first silicon deposition process using a silicon source material different from the base source material. A first nitrided silicon layer can be formed by nitriding the first silicon layer using a first nitridation process. The semiconductor substrate having the first nitrided silicon layer can be unloaded from the semiconductor equipment.
摘要:
A method of forming a memory device includes forming a first interlayer insulating layer on a semiconductor substrate, forming a first electrode in the first interlayer insulating layer, the first electrode having a top surface of a rectangular shape extending in a first direction, and forming a variable resistance pattern on the first electrode, the variable resistance pattern having a bottom surface of a rectangular shape extending in a second direction crossing the first direction, the bottom surface of the variable resistance pattern contacting the first electrode, wherein the area of contact between the lower electrode and the variable resistance pattern is substantially equal to a multiplication of a minor axis length of a top surface of the first electrode and a minor axis length of a bottom surface of the variable resistance pattern.
摘要:
Provided are methods of forming a phase change memory device. A semiconductor device having a lower electrode and an interlayer insulating layer may be prepared. The lower electrode may be surrounded by the interlayer insulating layer. Source gases, a reaction gas and a purge gas may be injected into a process chamber of a semiconductor fabrication device to form a phase change material layer on a semiconductor substrate. The source gases may be simultaneously injected into the process chamber. The phase change material layer may be in contact with the lower electrode through the interlayer insulating layer. The phase change material layer may be etched to form a phase change memory cell in the interlayer insulating layer. An upper electrode may be formed on the phase change memory cell.
摘要:
Provided are methods of forming contact structures and semiconductor devices fabricated using the contact structures. The formation of a contact structure can include forming a first molding pattern on a substrate, forming an insulating layer to cover at least a sidewall of the first molding pattern, forming a second molding pattern to cover a sidewall of the insulating layer and spaced apart from the first molding pattern, removing a portion of the insulating layer between the first and second molding patterns to form a hole, and forming an insulating pattern between the first and second molding patterns, and forming a contact pattern in the hole.
摘要:
Provided are a phase change memory device and a method for forming the phase change memory device. The method includes forming a phase change material layer by providing reactive radicals to a substrate. The reactive radicals may comprise precursors for a phase change material and nitrogen.
摘要:
A phase change memory device includes a lower electrode provided on a substrate, an interlayer insulating layer including a contact hole exposing the lower electrode, and covering the substrate, a resistant material pattern filling the contact hole, a phase change pattern interposed between the resistant material pattern and the interlayer insulating layer, and extending between the resistant material pattern and the lower electrode, wherein the resistant material pattern has a higher resistance than the phase change pattern, and an upper electrode in contact with the phase change pattern, the upper electrode being electrically connected to the lower electrode through the phase change pattern.
摘要:
A semiconductor device includes an electrode having a metal silicide layer and a metal alloy layer, and a data storage element formed on the electrode. The metal silicide layer has a concave surface to correspond to a convex surface of the metal alloy layer such that the concave surface of the metal silicide layer and the convex surface of the metal alloy layer form a curved boundary.