摘要:
A semiconductor device includes a gate stacked structure including a gate dielectric layer over a semiconductor substrate, a metal layer formed over the gate dielectric layer, and a capping layer formed over the metal layer, where the capping layer includes a chemical element with a higher concentration at an interface between the capping layer and the metal layer than another region of the capping layer and the chemical element is operable to control an effective work function (eWF) of the gate stacked structure.
摘要:
A semiconductor device includes a dielectric layer, where the dielectric layer includes a metal oxide layer, a metal nitride carbide layer including hydrogen therein, and a reduction prevention layer inserted between the metal nitride carbide layer and the dielectric layer.
摘要:
A method for fabricating a capacitor includes: forming a first silicon layer over a semiconductor substrate, where the first silicon layer is doped with a dopant; forming an undoped second silicon layer over the first silicon layer; forming an opening by etching the second silicon layer and the first silicon layer; forming a storage node in the opening; and removing the first silicon layer and the second silicon layer.
摘要:
A method for fabricating a variable resistance memory device includes forming a first electrode, forming a first metal oxide layer which satisfies chemical stoichiometry over the first electrode, forming a second metal oxide layer which is lower in oxygen content than the first metal oxide layer by reducing a part of the first metal oxide layer, and forming a second electrode over the second metal oxide layer.
摘要:
A method for fabricating a semiconductor device includes forming a gate dielectric layer over a substrate, forming a dipole capping layer over the gate dielectric layer, stacking a metal gate layer and a polysilicon layer over the dipole capping layer, and forming a gate pattern by etching the polysilicon layer, the metal gate layer, the dipole capping layer, and the gate dielectric layer.
摘要:
In a semiconductor device including a carbon-containing electrode and a method for fabricating the same, an electrode has a high work function due to a carbon-containing TiN layer contained therein. It is possible to provide a dielectric layer having a high permittivity and thus to reduce the leakage current by forming an electrode having a high work function. Also, sufficient capacitance of a capacitor can be secured by employing an electrode having a high work function and a dielectric layer having a high permittivity.
摘要:
A method for fabricating a capacitor includes forming an isolation layer over a cell region and a peripheral region of a substrate. The isolation layer forms a plurality of open regions in the cell region. Storage nodes are formed on surfaces of the open regions. An upper portion of the isolation layer is etched to expose upper outer walls of the storage nodes. A sacrificial pattern is formed over the isolation layer to enclose the upper outer walls of the storage nodes. The isolation layer in the peripheral region is etched to expose side portions of the resulting structure obtained after forming the sacrificial pattern in the cell region. With the sacrificial pattern supporting the storage nodes, the isolation layer in the cell region is removed. The sacrificial pattern is then removed.
摘要:
A method for fabricating a capacitor includes forming an isolation layer over a cell region and a peripheral region of a substrate. The isolation layer forms a plurality of open regions in the cell region. Storage nodes are formed on surfaces of the open regions. An upper portion of the isolation layer is etched to expose upper outer walls of the storage nodes. A sacrificial pattern is formed over the isolation layer to enclose the upper outer walls of the storage nodes. The isolation layer in the peripheral region is etched to expose side portions of the resulting structure obtained after forming the sacrificial pattern in the cell region. With the sacrificial pattern supporting the storage nodes, the isolation layer in the cell region is removed. The sacrificial pattern is then removed.
摘要:
A capacitor includes a pillar-type storage node, a supporter disposed entirely within an inner empty crevice of the storage node, a conductive capping layer over the supporter and contacting the storage node so as to seal an entrance to the inner empty crevice, a dielectric layer over the storage node, and a plate node over the dielectric layer.