摘要:
Provided are a semiconductor memory device and a fabricating method thereof. The device includes a stack including vertical channel structures that penetrate insulating patterns and gate electrodes that are alternately and repeatedly stacked on each other. Each of the gate electrodes includes first and second gate conductive layers. In a first region between an outer side of the stack and the vertical channel structures, the first gate conductive layer is adjacent to the vertical channel structures and includes a truncated end portion, the second gate conductive layer has a portion adjacent to the vertical channel structures and covered by a corresponding one of the first gate conductive layer and an opposite portion that is not covered with the first gate conductive layer. In a second region between the vertical channel structures, the first gate conductive layer may be extended to continuously cover surfaces of the second gate conductive layer.
摘要:
Provided are a semiconductor device and a method of fabricating the same. The method may include forming an electrode structure including insulating layers and electrode layers alternatingly stacked on a substrate, forming a channel hole to penetrate the electrode structure, forming a data storage layer on a sidewall of the channel hole, and forming a semiconductor pattern on a sidewall of the data storage layer to be electrically connected to the substrate. The electrode layers may be metal-silicide layers, and the insulating layers and the electrode layers may be formed in an in-situ manner using the same deposition system.
摘要:
Provided are a semiconductor device and a method of fabricating the same. The method may include forming an electrode structure including insulating layers and electrode layers alternatingly stacked on a substrate, forming a channel hole to penetrate the electrode structure, forming a data storage layer on a sidewall of the channel hole, and forming a semiconductor pattern on a sidewall of the data storage layer to be electrically connected to the substrate. The electrode layers may be metal-silicide layers, and the insulating layers and the electrode layers may be formed in an in-situ manner using the same deposition system.
摘要:
A nonvolatile memory device includes gate electrodes three dimensionally arranged on a semiconductor substrate, a semiconductor pattern extending from the semiconductor substrate and crossing sidewalls of the gate electrodes, a metal liner pattern formed between the semiconductor pattern and formed on a top surface and a bottom surface of each of the gate electrodes, and a charge storage layer formed between the semiconductor pattern and the metal liner pattern.
摘要:
A method for manufacturing a three-dimensional semiconductor memory includes forming a plurality of stacked structures disposed on a substrate to be spaced apart from each other, each of the stacked structures including a plurality of dielectric patterns and a plurality of polysilicon patterns alternately stacked, forming a metal layer to cover sidewalls of the stacked structures and a top surface of the substrate exposed between the stacked structures, and forming stacked gate electrodes on the substrate and a conductive line in the substrate by performing a silicidation process between the metal layer and each of the polysilicon patterns and the substrate.
摘要:
Semiconductor devices and methods of fabricating semiconductor devices that may include forming an insulation structure including insulation patterns that are sequentially stacked and vertically separated from each other to provide gap regions between the insulation patterns, forming a first conductive layer filling the gap regions and covering two opposite sidewalls of the insulation structure, and forming a second conductive layer covering the first conductive layer. A thickness of the second conductive layer covering an upper sidewall of the insulation structure is greater than a thickness of the second conductive layer covering a lower sidewall of the insulation structure.
摘要:
Semiconductor devices and methods of fabricating semiconductor devices that may include forming an insulation structure including insulation patterns that are sequentially stacked and vertically separated from each other to provide gap regions between the insulation patterns, forming a first conductive layer filling the gap regions and covering two opposite sidewalls of the insulation structure, and forming a second conductive layer covering the first conductive layer. A thickness of the second conductive layer covering an upper sidewall of the insulation structure is greater than a thickness of the second conductive layer covering a lower sidewall of the insulation structure.
摘要:
A memory device includes a vertical string of nonvolatile memory cells on a substrate, along with a ground selection transistor extending between the vertical string of nonvolatile memory cells and the substrate. The ground selection transistor can have a current carrying terminal electrically coupled to a channel region of a nonvolatile memory cell in the vertical string of nonvolatile memory cells. The ground selection transistor includes a gate electrode associated with a ground selection line of the memory device. This gate electrode includes: (i) a mask pattern, (ii) a barrier metal layer of a first material extending opposite a sidewall of the mask pattern and (iii) a metal pattern of a second material different from the first material extending between at least a portion of the barrier metal layer and the mask pattern.
摘要:
Disclosed is a semiconductor memory device including stacks on a substrate, a vertical channel portion connected to the substrate through each of the stacks, and a separation pattern disposed between the stacks. Each of the stacks may include a plurality of gate electrodes stacked on the substrate and insulating patterns interposed between the gate electrodes. Each of the gate electrodes may include a first metal pattern, which is disposed between the insulating patterns to define a recess region recessed toward the vertical channel portion, and a second metal pattern disposed in the recess region. The first and second metal patterns may contain the same metallic material and may have mean grain sizes different from each other.
摘要:
A nonvolatile memory device includes gate electrodes three dimensionally arranged on a semiconductor substrate, a semiconductor pattern extending from the semiconductor substrate and crossing sidewalls of the gate electrodes, a metal liner pattern formed between the semiconductor pattern and formed on a top surface and a bottom surface of each of the gate electrodes, and a charge storage layer formed between the semiconductor pattern and the metal liner pattern.