摘要:
Provided is a non-volatile memory device that can be highly integrated and may have a high reliability. Some embodiments of the non-volatile memory device include a first doping layer having a first conductivity on a substrate, a semiconductor pillar extending from the first doping layer on the substrate in an upward direction and having second conductivity opposite to the first conductivity, and a control gate electrode surrounding a sidewall of the semiconductor pillar. Embodiments of the non-volatile memory device may include a charge storage layer interposed between the semiconductor pillar and the control gate electrode and a second doping layer of the first conductivity that is disposed on the semiconductor pillar and is electrically connected to the semiconductor pillar.
摘要:
Provided are non-volatile memory devices that may realize high integration and have high reliability. A plurality of first semiconductor layers are stacked on a substrate. A plurality of second semiconductor layers are interposed between the plurality of first semiconductor layers, respectively, and are recessed from one end of each of the plurality of first semiconductor layers to define a plurality of first trenches between the plurality of first semiconductor layers. A plurality of first storage nodes are provided on surfaces of the second semiconductor layers inside the plurality of first trenches. Devices may include a plurality of first control gate electrodes that are formed on the plurality of first storage nodes to fill the plurality of first trenches.
摘要:
Methods of manufacturing non-volatile memory devices that can reduce or prevent loss of charges stored in a charge storage layer and/or that can improve charge storage capacity by neutral beam irradiation of an insulating layer are disclosed. The methods include forming a tunneling insulating layer on a substrate, forming a charge storage layer on the tunneling insulating layer, forming a blocking insulating layer on the charge storage layer, irradiating the blocking insulating layer and/or the tunneling insulating layer with a neutral beam, and forming a gate conductive layer on the blocking insulating layer.
摘要:
A nonvolatile memory device, includes a semiconductor substrate having a bottom part, a second vertical part positioned vertically on the bottom part, and a first vertical part having a width smaller than a width of the second vertical part and positioned on the second vertical part to have a boundary step therebetween; a charge trap layer disposed on a lateral surface of the first vertical part and on an upper surface of the boundary step; and a control gate electrode disposed on an upper surface of the bottom part and on lateral surfaces of the second vertical part and the charge trap layer.
摘要:
A non-volatile semiconductor memory device comprises a substrate including a source region, a drain region and a channel region provided between the source region and the drain region with a gate stack located above the channel region with a metal gate located above the gate stack. The metal gate is comprised of a metal having a specific metal work function relative to a composition of a layer of the gate stack that causes electrons to travel through the entire thickness of the blocking layer via direct tunneling. The gate stack preferably comprises a multiple layer stack selected from a group of multiple layer stacks consisting of: ONO, ONH, OHH, OHO, HHH, or HNH, where O is an oxide material, N is SiN, and H is a high κ material.
摘要:
A non-volatile semiconductor memory device comprises a substrate including a source region, a drain region and a channel region provided between the source region and the drain region with a gate stack located above the channel region with a metal gate located above the gate stack. The metal gate is comprised of a metal having a specific metal work function relative to a composition of a layer of the gate stack that causes electrons to travel through the entire thickness of the blocking layer via direct tunneling. The gate stack preferably comprises a multiple layer stack selected from a group of multiple layer stacks consisting of: ONO, ONH, OHH, OHO, HHH, or HNH, where O is an oxide material, N is SiN, and H is a high κ material.
摘要:
Nonvolatile memory transistors including active pillars having smooth side surfaces with an acute inward angle are provided. The transistor has an active pillar having smooth side surfaces with an acute inward angle and protrudes from semiconductor substrate. A gate electrode surrounds the side surfaces of the active pillar. A charge storage layer is provided between the active pillar and the gate electrode. Nonvolatile memory arrays including the transistor and related methods of fabrication are also provided.
摘要:
In a method of manufacturing a memory device having improved erasing characteristics, the method includes sequentially forming a tunneling oxide layer, a charge storing layer, and a blocking oxide layer on a semiconductor substrate; annealing the semiconductor substrate including the tunneling oxide layer, the charge storing layer, and the blocking oxide layer under a gas atmosphere so that the blocking oxide layer has a negative fixed oxide charge; forming a gate electrode on the blocking oxide layer with the negative fixed oxide charge and etching the tunneling oxide layer, the charge storing layer, and the blocking oxide layer to form a gate structure; and forming a first doped region and a second doped region in the semiconductor substrate at sides of the gate structure by doping the semiconductor substrate with a dopant.
摘要:
In a method of manufacturing a memory device having improved erasing characteristics, the method includes sequentially forming a tunneling oxide layer, a charge storing layer, and a blocking oxide layer on a semiconductor substrate; annealing the semiconductor substrate including the tunneling oxide layer, the charge storing layer, and the blocking oxide layer under a gas atmosphere so that the blocking oxide layer has a negative fixed oxide charge; forming a gate electrode on the blocking oxide layer with the negative fixed oxide charge and etching the tunneling oxide layer, the charge storing layer, and the blocking oxide layer to form a gate structure; and forming a first doped region and a second doped region in the semiconductor substrate at sides of the gate structure by doping the semiconductor substrate with a dopant.
摘要:
A method of programming a silicon oxide nitride oxide semiconductor (SONOS) memory device is provided. The SONOS memory device includes a substrate, first and second impurity regions spaced apart on the substrate, a gate oxide layer formed over the substrate between the first and second impurity regions, a trap layer formed over the gate oxide layer, an insulation layer formed over the trap layer, and a gate electrode formed over the insulation layer. The method of programming the SONOS device includes writing data into the SONOS memory device by applying a first voltage to the first impurity region, a gate voltage to the gate electrode, and a second voltage to the second impurity region, where the second voltage is a negative voltage.