Abstract:
A semiconductor device having a capacitor includes a substrate which has a transistor, a first insulating pattern which is formed on the substrate and does not overlap a first contact node formed in the substrate, a second insulating pattern which is formed on the substrate, does not overlap a second contact node formed in the substrate, and is separated from the first insulating pattern, a first lower electrode which is formed on part of the substrate and sidewalls of the first insulating pattern, a second lower electrode which is formed on part of the substrate and sidewalls of the second insulating pattern, a dielectric layer pattern which is formed on the first lower electrode and the second lower electrode, and an upper electrode which is formed on the dielectric layer pattern. Related fabrication methods are also discussed.
Abstract:
A semiconductor device includes a lower interconnection having second conductivity-type impurities on a substrate having first conductivity-type impurities. A switching device is on the lower interconnection. A first blocking layer is provided between the lower interconnection and the switching device. The first blocking layer includes carbon (C), germanium (Ge), or a combination thereof. A second blocking layer may be provided between the substrate and the lower interconnection.
Abstract:
A capacitor of a memory device includes dielectric layers with different energy band gaps. The capacitor may include, for example, a first electrode and a first dielectric layer on the first electrode. The capacitor may further include a second dielectric layer on the first dielectric layer. The first and second dielectric layers may include the same dielectric material with different concentration of an impurity therein. A second electrode is disposed on the second dielectric layer.
Abstract:
An electrode structure is disclosed. The electrode structure includes a first polysilicon layer doped with resistance adjustment impurities; a second polysilicon layer for adjusting grains, formed in the first polysilicon layer and doped with grain adjustment impurities; an ohmic metal layer formed on the first and second polysilicon layers; a barrier metal layer formed on the ohmic metal layer; and a metal layer formed on the barrier metal layer.
Abstract:
A vertical memory device includes a first structure having a lower semiconductor pattern structure filling a recess on a substrate and protruding from an upper surface of the substrate in a first direction substantially perpendicular to the upper surface of the substrate, the lower semiconductor pattern structure including a first undoped semiconductor pattern, a doped semiconductor pattern, and a second undoped semiconductor pattern sequentially stacked, and a lower surface of the doped semiconductor pattern being lower than the upper surface of the substrate, and an upper semiconductor pattern extending in the first direction on the lower semiconductor pattern structure, and a plurality of gate electrodes surrounding a sidewall of the first structure, the plurality of gate electrodes being at a plurality of levels, respectively, so as to be spaced apart from each other in the first direction.
Abstract:
A method of manufacturing a semiconductor device includes forming an active fin extending longitudinally in a first direction along a surface of a substrate, forming a field insulating layer on the substrate, the field insulating layer covering a part of the active fin, forming a dummy gate electrode on the field insulating layer and the active fin, the dummy gate electrode extending in a second direction different from the first direction, forming a spacer on the sides of the dummy gate electrode, and removing the dummy gate electrode by a wet etching process that includes rinsing the dummy gate electrode intermittently during an etching away of the dummy gate electrode.
Abstract:
A semiconductor device having a capacitor includes a substrate which has a transistor, a first insulating pattern which is formed on the substrate and does not overlap a first contact node formed in the substrate, a second insulating pattern which is formed on the substrate, does not overlap a second contact node formed in the substrate, and is separated from the first insulating pattern, a first lower electrode which is formed on part of the substrate and sidewalls of the first insulating pattern, a second lower electrode which is formed on part of the substrate and sidewalls of the second insulating pattern, a dielectric layer pattern which is formed on the first lower electrode and the second lower electrode, and an upper electrode which is formed on the dielectric layer pattern. Related fabrication methods are also discussed.
Abstract:
A semiconductor device includes a capacitor with reduced oxygen defects at an interface between a dielectric layer and an electrode of the capacitor. The semiconductor device includes a lower metal layer; a dielectric layer on the lower metal layer and containing a first metal; a sacrificial layer on the dielectric layer and containing a second metal; and an upper metal layer on the sacrificial layer. An electronegativity of the second metal in the sacrificial layer is greater than an electronegativity of the first metal in the dielectric layer.
Abstract:
A semiconductor device includes a capacitor with reduced oxygen defects at an interface between a dielectric layer and an electrode of the capacitor. The semiconductor device includes a lower metal layer; a dielectric layer on the lower metal layer and containing a first metal; a sacrificial layer on the dielectric layer and containing a second metal; and an upper metal layer on the sacrificial layer. An electronegativity of the second metal in the sacrificial layer is greater than an electronegativity of the first metal in the dielectric layer.
Abstract:
A precursor composition for forming a silicon dioxide film on a substrate, the precursor composition including at least one precursor compound represented by the following chemical formulas (1), (2), and (3): HxSiAy(NR1R2)4-x-y (1) HxSi(NAR3)4-x (2) HxSi(R4)z(R5)4-x-z (3) wherein, independently in the chemical formulas (1), (2), and (3), H is hydrogen, x is 0 to 3, Si is silicon, A is a halogen, y is 1 to 4, N is nitrogen, and R1, R2, R3, and R5 are each independently selected from the group of H, aryl, perhaloaryl, C1-8 alkyl, and C1-8 perhaloalkyl, and R4 is aryl in which at least one hydrogen is replaced with a halogen or C1-8 alkyl in which at least one hydrogen is replaced with a halogen.