摘要:
In a method of forming a titanium aluminum nitride layer, a first reactant is formed on a substrate by reacting a first source including titanium and a second source including nitrogen. A second reactant is formed by providing a third source including aluminum onto the substrate having the first reactant thereon and reacting the third source with the first reactant. A third reactant is formed by providing a fourth source including nitrogen onto the substrate having the second reactant thereon and reacting the fourth source with the second reactant. The titanium aluminum nitride layer having a good step coverage is formed on the substrate. Processes of forming the titanium aluminum nitride layer are simplified and deposition rate is improved. Therefore, a phase-change memory device using the titanium aluminum nitride layer as a lower electrode may have an improved throughput.
摘要:
According to an embodiment of the present invention, a method for cleaning a process chamber includes removing a TiAlN layer from an inner wall of the process chamber using a first cleaning gas containing a TiCl4 gas. According to principles of this invention, dry cleaning, without wet cleaning, is possible for cleaning the process chamber.
摘要:
An interconnection structure having an oxygen trap pattern in a semiconductor device, and a method of fabricating the same are provided. The interconnection structure includes a lower interlayer insulating layer formed on a semiconductor substrate. A metal layer pattern and a capping layer pattern are sequentially stacked on the lower interlayer insulating layer. An oxygen trap pattern is disposed on the capping layer pattern and includes a conductive oxygen trap pattern.
摘要:
Provided is a method of forming a barrier metal layer of a semiconductor device. In the method, a barrier metal layer is formed on a top surface of a semiconductor substrate and then an electrode layer is formed on the semiconductor substrate. Forming the barrier metal layer includes performing a cyclic process repeatedly at least twice. The cyclic process includes depositing a titanium layer and nitriding the deposited titanium layer.
摘要:
A method of fabricating a semiconductor memory device includes forming a first insulating layer and a sacrificial layer on a substrate. The first insulating layer and the sacrificial layer have an opening therein. A first conductive layer is formed in the opening and on the sacrificial layer. A second insulating layer is formed on the first conductive layer. The second insulating layer, the first conductive layer and the sacrificial layer are then planarized until the first insulating layer is exposed, thereby forming a first conductive pattern and a second insulating layer pattern in the opening. A phase change material layer is formed on the first conductive pattern, the first insulating layer and the second insulating layer pattern. A second conductive pattern is formed on the phase change material layer. A semiconductor memory device and a data processing system adopting the semiconductor memory device are also provided.
摘要:
A semiconductor device includes a substrate, a plurality of gate structures, a first insulating interlayer pattern, and a second insulation layer pattern. The substrate has an active region and a field region, each of the active region and the field region extends in a first direction, and the active region and the field region are alternately and repeatedly arranged in a second direction substantially perpendicular to the first direction. The gate structures are spaced apart from each other in the first direction, each of the gate structures extends in the second direction. The first insulation layer pattern is formed on a portion of a sidewall of each gate structure. The second insulation layer pattern covers the gate structures and the first insulation layer pattern, and has an air tunnel between the gate structures, the air tunnel extending in the second direction.