摘要:
A diode may be foamed within a molding layer on a substrate. A conductive buffer pattern having a greater planar area than the diode may be on the diode and molding layer. An electrode structure may be on the conductive buffer pattern. A data storage pattern may be on the electrode structure. One lateral surface of the conductive buffer pattern may be vertically aligned with one lateral surface of the electrode structure.
摘要:
A phase change structure includes a first phase change material layer pattern and a second phase change material layer pattern. The first phase change material layer pattern may partially fill a high aspect ratio structure, and the second phase change material layer pattern may fully fill the high aspect ratio structure. The first phase change material layer pattern may include a first phase change material, and the second phase change material layer pattern may include a second phase change material having a composition substantially different from a composition of the first phase change material.
摘要:
A diode may be formed within a molding layer on a substrate. A conductive buffer pattern having a greater planar area than the diode may be on the diode and molding layer. An electrode structure may be on the conductive buffer pattern. A data storage pattern may be on the electrode structure. One lateral surface of the conductive buffer pattern may be vertically aligned with one lateral surface of the electrode structure.
摘要:
A sacrificial pattern is formed to partially cover the pipe-shaped electrode. A sacrificial spacer is formed on a lateral surface of the sacrificial pattern. The sacrificial spacer extends across the pipe-shaped electrode. The sacrificial spacer has a first side and a second side opposite the first side. The sacrificial pattern is removed to expose the pipe-shaped electrode proximal to the first and second sides of the sacrificial spacer. The pipe-shaped electrode exposed on both sides of the sacrificial spacer may be primarily trimmed. The pipe-shaped electrode is retained under the sacrificial spacer to form a first portion, and a second portion facing the first portion. The second portion of the pipe-shaped electrode is secondarily trimmed. The sacrificial spacer is removed to expose the first portion of the pipe-shaped electrode. A data storage plug is formed on the first portion of the pipe-shaped electrode.
摘要:
A phase-change memory device includes a word line on a substrate and a phase-change memory cell on the word line and comprising a phase-change material pattern. The device also includes a non-uniform conductivity layer pattern comprising a conductive region on the phase-change material pattern and a non-conductive region contiguous therewith. The device further includes a bit line on the conductive region of the non-uniform conductivity layer pattern. In some embodiments, the phase-change memory cell may further include a diode on the word line, a heating electrode on the diode and wherein the phase-change material layer is disposed on the heating electrode. An ohmic contact layer and a contact plug may be disposed between the diode and the heating electrode.
摘要:
A conductive pattern on a substrate is formed. An insulating layer having an opening exposing the conductive pattern is formed. A bottom electrode is formed on the conductive pattern and a first sidewall of the opening. A spacer is formed on the bottom electrode and a second sidewall of the opening. The spacer and the bottom electrode are formed to be lower than a top surface of the insulating layer. A data storage plug is formed on the bottom electrode and the spacer. The data storage plug has a first sidewall aligned with a sidewall of the bottom electrode and a second sidewall aligned with a sidewall of the spacer. A bit line is formed on the data storage plug.
摘要:
A phase-change memory device includes a word line on a substrate and a phase-change memory cell on the word line and comprising a phase-change material pattern. The device also includes a non-uniform conductivity layer pattern comprising a conductive region on the phase-change material pattern and a non-conductive region contiguous therewith. The device further includes a bit line on the conductive region of the non-uniform conductivity layer pattern. In some embodiments, the phase-change memory cell may further include a diode on the word line, a heating electrode on the diode and wherein the phase-change material layer is disposed on the heating electrode. An ohmic contact layer and a contact plug may be disposed between the diode and the heating electrode.
摘要:
A contact structure that includes a first pattern formed on a substrate, wherein the first pattern has a recessed region in an upper surface thereof, a planarized buffer pattern formed on the first pattern, and a conductive pattern formed on the planarized buffer pattern.
摘要:
A contact structure that includes a first pattern formed on a substrate, wherein the first pattern has a recessed region in an upper surface thereof, a planarized buffer pattern formed on the first pattern, and a conductive pattern formed on the planarized buffer pattern.