摘要:
A semiconductor device includes a substrate; first conductive lines extending in a first direction; second conductive lines extending in a second direction; memory cell structures between the first conductive lines and the second conductive lines; and dummy cell structures that are electrically isolated and between the first conductive lines and the second conductive lines. The memory cell structures include a data storage material pattern including a phase change material layer; and a selector material pattern overlapping the data storage material pattern in a vertical direction. The dummy cell structures include a dummy pattern including a phase change material layer. The phase change material layer of the dummy pattern includes a crystalline phase portion and an amorphous phase portion. At a cross section of the phase change material layer of the dummy pattern, an area of the crystalline phase portion is larger than an area of the amorphous phase portion.
摘要:
There is provided a variable resistance memory device including a first electrode line layer including first electrode lines extending in a first direction and spaced apart from each other on a substrate, a second electrode line layer that is above the first electrode line layer and including second electrode lines extending in a second direction orthogonal to the first direction and spaced apart from each other, and a memory cell layer including memory cells between the first electrode line layer and the second electrode line layer. Each of the memory cells includes a selection device layer, an intermediate electrode layer, and a variable resistance layer. A first insulating layer is between the first electrode lines, a second insulating layer is between the memory cells, and a third insulating layer is between the second electrode lines. The second insulating layer includes air gaps on side surfaces of the memory cells.
摘要:
Three-dimensional semiconductor memory devices and methods of fabricating the same. The three-dimensional semiconductor devices include an electrode structure with sequentially-stacked electrodes disposed on a substrate, semiconductor patterns penetrating the electrode structure, and memory elements including a first pattern and a second pattern interposed between the semiconductor patterns and the electrode structure, the first pattern vertically extending to cross the electrodes and the second pattern horizontally extending to cross the semiconductor patterns.
摘要:
A three-dimensional (3D) semiconductor memory device includes an electrode separation pattern, a stack structure, a data storage layer, and a channel structure. The electrode separation pattern is disposed on a substrate. A stack structure is disposed on a sidewall of the electrode separation pattern. The stack structure includes a corrugated sidewall opposite to the sidewall of the electrode separation pattern. The sidewall of the electrode separation pattern is vertical to the substrate. A data storage layer is disposed on the corrugated sidewall. A channel structure is disposed on the charge storage layer.
摘要:
A chalcogen compound layer exhibiting ovonic threshold switching characteristics, a switching device, a semiconductor device, and/or a semiconductor apparatus including the same are provided. The switching device and/or the semiconductor device may include two or more chalcogen compound layers having different energy band gaps. Alternatively, the switching device and/or semiconductor device may include a chalcogen compound layer having a concentration gradient of an element of boron (B), aluminum (Al), scandium (Sc), manganese (Mn), strontium (Sr), and/or indium (In) in a thickness direction thereof. The switching device and/or a semiconductor device may exhibit stable switching characteristics while having a low off-current value (leakage current value).
摘要:
A variable resistance memory device includes first conductive lines extending in a first direction, second conductive lines extending in a second direction and crossing the first conductive lines in a plan view, and cell structures respectively provided at crossing points of the first conductive lines and the second conductive lines in the plan view. Each of the cell structures includes a switching pattern, a variable resistance pattern, and a first electrode provided between the switching pattern and the first conductive line, the first electrode including carbon. Each of the first conductive lines includes an upper pattern including a metal nitride in an upper portion thereof. The upper pattern is in contact with a bottom surface of the first electrode.
摘要:
A chalcogen compound layer exhibiting ovonic threshold switching characteristics, a switching device, a semiconductor device, and/or a semiconductor apparatus including the same are provided. The switching device and/or the semiconductor device may include two or more chalcogen compound layers having different energy band gaps. Alternatively, the switching device and/or semiconductor device may include a chalcogen compound layer having a concentration gradient of an element of boron (B), aluminum (Al), scandium (Sc), manganese (Mn), strontium (Sr), and/or indium (In) in a thickness direction thereof. The switching device and/or a semiconductor device may exhibit stable switching characteristics while having a low off-current value (leakage current value).
摘要:
A method of fabricating a variable resistance memory device that includes forming a plurality of memory cells on a substrate. Each of the plurality of memory cells in a switching device and a variable resistance pattern. A capping structure is formed that commonly covers lateral side surfaces of the plurality of memory cells. An insulating gapfill layer is formed that covers the capping structure and fills a region between adjacent memory cells of the plurality of memory cells. The forming of the capping structure includes forming a second capping layer including silicon oxide that covers the lateral side surfaces of the plurality of memory cells. At least a partial portion of the second capping layer is nitrided by performing a first decoupled plasma process to form a third capping layer that includes silicon oxynitride.
摘要:
A variable resistance memory device includes a plurality of memory cells arranged on a substrate. Each of the memory cells includes a selection element pattern and a variable resistance pattern stacked on the substrate. The selection element pattern includes a first selection element pattern having a chalcogenide material and a second selection element pattern having a metal oxide and coupled to the first selection element pattern.
摘要:
There is provided a variable resistance memory device including a first electrode line layer including first electrode lines extending in a first direction and spaced apart from each other on a substrate, a second electrode line layer that is above the first electrode line layer and including second electrode lines extending in a second direction orthogonal to the first direction and spaced apart from each other, and a memory cell layer including memory cells between the first electrode line layer and the second electrode line layer. Each of the memory cells includes a selection device layer, an intermediate electrode layer, and a variable resistance layer. A first insulating layer is between the first electrode lines, a second insulating layer is between the memory cells, and a third insulating layer is between the second electrode lines. The second insulating layer includes air gaps on side surfaces of the memory cells.