摘要:
Methods of forming integrated circuit devices include forming an etch stop layer on a surface of a semiconductor substrate and forming a first interlayer insulating layer on the etch stop layer. The first interlayer insulating layer is patterned to define an opening therein that exposes a first portion of the etch stop layer. This first portion of the etch stop layer is then removed to thereby expose an underlying portion of the surface of the semiconductor substrate. This removal of the etch stop layer may be performed by wet etching the first portion of the etch stop layer using a phosphoric acid solution. A semiconductor region is then selectively grown into the opening, using the exposed portion of the surface of the semiconductor substrate as an epitaxial seed layer.
摘要:
Methods of forming integrated circuit devices include forming an etch stop layer on a surface of a semiconductor substrate and forming a first interlayer insulating layer on the etch stop layer. The first interlayer insulating layer is patterned to define an opening therein that exposes a first portion of the etch stop layer. This first portion of the etch stop layer is then removed to thereby expose an underlying portion of the surface of the semiconductor substrate. This removal of the etch stop layer may be performed by wet etching the first portion of the etch stop layer using a phosphoric acid solution. A semiconductor region is then selectively grown into the opening, using the exposed portion of the surface of the semiconductor substrate as an epitaxial seed layer.
摘要:
A method of manufacturing a nonvolatile memory device including forming on a lower insulating layer a first sacrificial pattern having first openings extending in a first direction, forming a second sacrificial pattern having second openings extending in a second direction on the lower insulating layer and the first sacrificial pattern wherein the second openings intersect the first openings, etching the lower insulating layer using the first and second sacrificial patterns to form a lower insulating pattern having contact holes defined by a region where the first and second openings intersect each other, forming a bottom electrode in the contact holes, and forming a variable resistance pattern on the lower insulating pattern so that a portion of the variable resistance pattern connects to a top surface of the bottom electrode.
摘要:
A method of fabricating a nonvolatile memory device includes; forming a first sacrificial layer pattern including a first open area that extends in a first direction on a lower dielectric layer, forming a pre-lower dielectric layer pattern including a recess that extends in the first direction using the first sacrificial layer pattern, forming a second sacrificial layer pattern including a second open area that extends in a second direction on the pre-lower dielectric layer pattern and the first sacrificial layer pattern, wherein the second open area intersects the first open area, forming a lower dielectric layer pattern including contact holes spaced apart in the recess using the first sacrificial layer pattern and second sacrificial layer pattern, wherein the contact holes extend to a bottom of the lower dielectric layer pattern, and forming a bottom electrode in the contact hole.
摘要:
A variable resistance memory device, and a method of forming the same. The method may include forming a lower electrode on a substrate, stacking a first etch stop layer and a second etch stop layer on the substrate, forming an insulating layer on the second etch stop layer, forming a recessing region to expose the lower electrode by patterning the insulating layer and the first and second etch stop layer, forming a variable resistance material layer in the recess region, and forming an upper electrode on the variable resistance material layer. The first etch stop layer can have an etching selectivity with respect to the second etch stop layer.
摘要:
A variable resistance memory device, and a method of forming the same. The method may include forming a lower electrode on a substrate, stacking a first etch stop layer and a second etch stop layer on the substrate, forming an insulating layer on the second etch stop layer, forming a recessing region to expose the lower electrode by patterning the insulating layer and the first and second etch stop layer, forming a variable resistance material layer in the recess region, and forming an upper electrode on the variable resistance material layer. The first etch stop layer can have an etching selectivity with respect to the second etch stop layer.
摘要:
A variable resistance memory device, and a method of forming the same. The method may include forming a lower electrode on a substrate, stacking a first etch stop layer and a second etch stop layer on the substrate, forming an insulating layer on the second etch stop layer, forming a recessing region to expose the lower electrode by patterning the insulating layer and the first and second etch stop layer, forming a variable resistance material layer in the recess region, and forming an upper electrode on the variable resistance material layer. The first etch stop layer can have an etching selectivity with respect to the second etch stop layer.
摘要:
A non-volatile memory device can include a word line that is operatively coupled to a non-volatile memory cell. A local bit line can be operatively coupled to the non-volatile memory cell. A discharge line that is associated with the local bit line can be configured to discharge the local bit line and a discharge diode can be electrically coupled between the local bit line and the discharge line.
摘要:
A variable resistance memory device, and a method of forming the same. The method may include forming a lower electrode on a substrate, stacking a first etch stop layer and a second etch stop layer on the substrate, forming an insulating layer on the second etch stop layer, forming a recessing region to expose the lower electrode by patterning the insulating layer and the first and second etch stop layer, forming a variable resistance material layer in the recess region, and forming an upper electrode on the variable resistance material layer. The first etch stop layer can have an etching selectivity with respect to the second etch stop layer.
摘要:
A nonvolatile memory device includes a substrate and a first insulating layer on the substrate. The first insulating layer includes a first opening therein. A lower electrode is provided in the first opening and protrudes from a surface of the first insulating layer outside the first opening. An electrode passivation pattern is provided on a sidewall of the lower electrode that protrudes from the surface of the first insulating layer. A second insulating layer is provided on the first insulating layer and includes a second opening therein at least partially exposing the lower electrode. A variable resistance material layer extends into the second opening to contact the lower electrode. The electrode passivation layer electrically separates the sidewall of the lower electrode from the variable resistance material layer. The electrode passivation pattern is formed of a material having an etching selectivity to that of the second insulating layer. Related fabrication methods are also discussed.