摘要:
A semiconductor memory device and a fabrication method thereof capable of improving electric contact characteristic between an access device and a lower electrode are provided. The semiconductor memory device includes an access device formed in a pillar shape on a semiconductor substrate, a first conductive layer formed over the access device, a protection layer formed on an edge of the first conductive layer to a predetermined thickness, and a lower electrode connected to the first conductive layer.
摘要:
A phase-change memory device including a phase-change region divided into multi layers and an operation method thereof are provided. The device includes a first phase-change layer to which a current is provided from a heating electrode, and a second phase-change layer formed with continuity to the first phase-change layer and having a different width from the first phase-change layer, and to which a current is provided from the heating electrode. The first and second phase-change layers include materials selected from a first group consisting of GeTe, GST415, GST315, GST225, GST124, GST147, and GST172 or a second group consisting of InSbSe, SnGeSe, GST, SnSbSe, and SiSbSe. The second phase-change layer includes a material different from the first phase-change layer, which is selected from the same group as the first phase-change layer and has smaller resistivity than the first phase-change layer.
摘要:
A method for fabricating a semiconductor device includes supplying a first source gas including a germanium (Ge) precursor onto a semiconductor substrate for a first time period, and periodically interrupting the supplying of the first source gas for the first time period to form Ge elements on the semiconductor substrate.
摘要:
A phase-change memory device including a multi-level cell and an operation method thereof are provided. The device includes a first phase-change material layer to which a current is provided from a heating electrode, and a second phase-change material layer formed with continuity to the first phase-change material layer and having a different width from the first phase-change material layer, and to which a current is provided from the heating electrode. The second phase-change material layer includes a material having smaller resistivity and a lower crystallization rate than the first phase-change material layer.
摘要:
A phase-change memory device with improved deposition characteristic and a method of fabricating the same are provided. The phase-change memory device includes a semiconductor substrate having a phase-change area, a first material-rich first phase-change layer forming an inner surface of the phase-change area and comprised of a hetero compound of the first material and a second material, and a second phase-change layer formed on a surface of the first phase-change layer to fill the phase-change area.
摘要:
A semiconductor device and a method of fabricating the same are provided. The semiconductor device includes a semiconductor substrate in which a word line region is formed, and a barrier metal layer arranged on the word line region and causing a Schottky junction. The barrier metal layer includes a first nitride material, in which a first material is nitrified, and a second nitride material, in which a second material is nitrified. The barrier metal layer is formed of a mixture of the first nitride material and the second nitride material. At least one of the first material or the second material is rich in a metal used to form the first nitride material or the second nitride material.
摘要:
A semiconductor device and a method of fabricating the same are provided. The semiconductor device includes a semiconductor substrate in which a word line region is formed, and a barrier metal layer arranged on the word line region and causing a Schottky junction. The barrier metal layer includes a first nitride material, in which a first material is nitrified, and a second nitride material, in which a second material is nitrified. The barrier metal layer is formed of a mixture of the first nitride material and the second nitride material. At least one of the first material or the second material is rich in a metal used to form the first nitride material or the second nitride material.
摘要:
A semiconductor memory device and a fabrication method thereof capable of improving electric contact characteristic between an access device and a lower electrode are provided. The semiconductor memory device includes an access device formed in a pillar shape on a semiconductor substrate, a first conductive layer formed over the access device, a protection layer formed on an edge of the first conductive layer to a predetermined thickness, and a lower electrode connected to the first conductive layer.