摘要:
Three-dimensional (3D) nonvolatile memory devices include a substrate having a well region of second conductivity type (e.g., P-type) therein and a common source region of first conductivity type (e.g., N-type) on the well region. A recess is provided, which extends partially (or completely) through the common source region. A vertical stack of nonvolatile memory cells are provided on the substrate. This vertical stack of nonvolatile memory cells includes a vertical stack of spaced-apart gate electrodes and a vertical active region, which extends on sidewalls of the vertical stack of spaced-apart gate electrodes and on a sidewall of the recess. Gate dielectric layers are provided, which extend between respective ones of the vertical stack of spaced-apart gate electrodes and the vertical active region. The gate dielectric layers may include a composite of a tunnel insulating layer, a charge storage layer, a relatively high bandgap barrier dielectric layer and a blocking insulating layer having a relatively high dielectric strength.
摘要:
A nonvolatile memory device includes a substrate, a stacked structure with conductive materials and first insulating materials and the conductive materials and the first insulating materials are alternately stacked on the substrate, and a plurality of pillars in contact with the substrate and the pillars extend through the stacked structure in a direction perpendicular to the substrate. The device also includes information storage layers between the conductive materials and the first insulating materials, and second insulating materials between the first insulating materials and the pillars.
摘要:
Provided are three-dimensional semiconductor devices. The devices may include gap-fill insulating patterns configured to upwardly extend from a substrate and an electrode structure defined by sidewalls of the gap-fill insulating patterns. Vertical structures may be provided between adjacent ones of the gap-fill insulating patterns to penetrate the electrode structure, and the vertical structures may include first and second rows of the vertical structures. A separation pattern may be provided between the first and second rows of vertical structures and include a separation semiconductor layer. The separation pattern extends along a direction parallel to the first and second rows of vertical structures.
摘要:
Provided are a three dimensional semiconductor memory device and a method of fabricating the same. The method includes forming a stepwise structure by using mask patterns and a sacrificial mask pattern formed on the mask patterns as a consumable etch mask.
摘要:
Provided are a three dimensional semiconductor memory device and a method of fabricating the same. The method includes forming a stepwise structure by using mask patterns and a sacrificial mask pattern formed on the mask patterns as a consumable etch mask.