Abstract:
Methods of manufacturing vertical semiconductor devices may include forming a mold structure including sacrificial layers and insulating interlayers with a first opening formed therethrough. The sacrificial layers and the insulating interlayers may be stacked repeatedly and alternately on a substrate. The first opening may expose the substrate. Blocking layers may be formed by oxidizing portions of the sacrificial layers exposed by the first opening. A first semiconductor layer pattern, a charge trapping layer pattern and a tunnel insulation layer pattern, respectively, may be formed on the sidewall of the first opening. A second semiconductor layer may be formed on the first polysilicon layer pattern and the bottom of the first opening. The sacrificial layers and the insulating interlayers may be partially removed to form a second opening. The sacrificial layers may be removed to form grooves between the insulating interlayers. Control gate electrodes may be formed in the grooves.
Abstract:
A semiconductor device may include gate structures spaced apart above a top surface of a substrate. The gate structures may include a horizontal electrode extending in a first direction parallel with the top surface of a substrate. An isolation insulating layer may be disposed between the gate structures. A plurality of cell pillars may penetrate the horizontal electrode and connect to the substrate. The plurality of cell pillars may include a minimum spacing defined by a shortest distance between any two of the plurality of cell pillars. The thickness of the horizontal electrode may be greater than the minimum spacing of the cell pillars.
Abstract:
Three-dimensional semiconductor devices are provided. The three-dimensional semiconductor device includes a substrate, a buffer layer on the substrate. The buffer layer includes a material having an etching selectivity relative to that of the substrate. A multi-layer stack including alternating insulation patterns and conductive patterns is provided on the buffer layer opposite the substrate. One or more active patterns respectively extend through the alternating insulation patterns and conductive patterns of the multi-layer stack and into the buffer layer. Related fabrication methods are also discussed.
Abstract:
Three-dimensional semiconductor devices are provided. The three-dimensional semiconductor device includes a substrate, a buffer layer on the substrate. The buffer layer includes a material having an etching selectivity relative to that of the substrate. A multi-layer stack including alternating insulation patterns and conductive patterns is provided on the buffer layer opposite the substrate. One or more active patterns respectively extend through the alternating insulation patterns and conductive patterns of the multi-layer stack and into the buffer layer. Related fabrication methods are also discussed.
Abstract:
A method of manufacturing a three-dimensional semiconductor memory device comprises forming a thin layer structure by alternately stacking first and second material layers on a substrate, forming a penetration dent penetrating the thin layer structure and exposing a top surface of the substrate recessed by the penetration dent, forming a vertical insulation layer penetrating the thin layer structure to cover an inner wall of the penetration dent, forming a semiconductor pattern penetrating the vertical insulation layer at the penetration dent to be inserted into the substrate, and forming an oxide layer between the thin layer structure and the substrate by oxidizing a sidewall of the penetration dent.
Abstract:
A non-volatile memory device and a non-volatile memory system comprising the same are provided. The non-volatile memory device includes a first stack in which a first conductive pattern and a first dielectric layer are alternately stacked in a first direction on a substrate, a second stack in which a second conductive pattern and a second dielectric layer are alternately stacked in the first direction on the first stack opposite the substrate, a first monitoring channel structure that penetrates the first stack in the first direction, and a second monitoring channel structure that penetrates the second stack in the first direction and is =on the first monitoring channel structure. A width of a top of the first monitoring channel structure opposite the substrate is smaller than a width of a bottom of the second monitoring channel structure adjacent the top of the first monitoring channel structure.
Abstract:
Three-dimensional semiconductor devices are provided. The three-dimensional semiconductor device includes a substrate, a buffer layer on the substrate. The buffer layer includes a material having an etching selectivity relative to that of the substrate. A multi-layer stack including alternating insulation patterns and conductive patterns is provided on the buffer layer opposite the substrate. One or more active patterns respectively extend through the alternating insulation patterns and conductive patterns of the multi-layer stack and into the buffer layer. Related fabrication methods are also discussed.