摘要:
The present invention is related to a method for fabricating a transistor with a polymetal gate electrode structure. The method includes the steps of: forming a gate insulation layer on a substrate; forming a patterned gate stack structure on the gate insulation layer, wherein the patterned stack structure includes a polysilicon layer as a bottom layer and a metal layer as an upper layer; forming a silicon oxide-based capping layer along a profile containing the patterned gate stack structure and on the gate insulation layer at a predetermined temperature that prevents oxidation of the metal layer; and performing a gate re-oxidation process.
摘要:
Disclosed is a method for fabricating a semiconductor device with a dual gate dielectric structure. The method includes the steps of: sequentially forming a first oxide layer, a nitride layer and a second oxide layer on a substrate provided with a cell region for the NVDRAM and a peripheral circuit region for a logic circuit; forming a mask on the cell region; performing a first wet etching process by using the mask as an etch barrier to remove the second oxide layer formed in the peripheral circuit region; performing a second wet etching process by using the second oxide layer remaining in the cell region as an etch barrier to remove the nitride layer formed in the peripheral circuit region; forming a third oxide layer on the first oxide layer remaining in the peripheral circuit region; and forming a gate electrode on the second oxide layer and the third oxide layer.
摘要:
Disclosed is a method for fabricating a semiconductor device with a polymetal gate electrode formed by a partial gate recessing process. The method includes the steps of forming a gate structure including a gate dielectric layer, a polysilicon layer, a metal layer, an etch stop layer and a sacrificial layer sequentially formed on a substrate; selectively performing a re-oxidation process to the gate structure; forming a spacer on each sidewall of the gate structure; implanting ions in the substrate for forming source/drain regions; selectively removing the sacrificial layer of the gate structure to form a recess; and filling an insulating hard mask into the recess for use in a self-aligned contact etching process.
摘要:
A semiconductor device includes a first conductive layer, a first intermediate structure over the first conductive layer, a second intermediate structure over the first intermediate structure, and a second conductive layer over the second intermediate structure. The first intermediate structure includes a metal silicide layer and a nitrogen containing metal layer. The second intermediate structure includes at least a nitrogen containing metal silicide layer.
摘要:
A gate structure of a semiconductor device includes an intermediate structure, wherein the intermediate structure includes a titanium layer and a tungsten silicide layer. A method for forming a gate structure of a semiconductor device includes forming a polysilicon-based electrode. An intermediate structure, which includes a titanium layer and a tungsten silicide layer, is formed over the polysilicon-based electrode. A metal electrode is formed over the intermediate structure.
摘要:
Provided are a semiconductor device and a method of fabricating a semiconductor device. The method includes providing a substrate having a channel region; forming a gate structure, which comprises a dummy gate pattern, on the substrate; forming first and second trenches by recessing the substrate on both sides of the gate structure, respectively; forming a first semiconductor pattern in the first and second trenches; removing the dummy gate pattern to expose a portion of the channel region; forming a recessed channel region by recessing the portion of the channel region; and forming a second semiconductor pattern in the recessed region.
摘要:
A method of manufacturing a semiconductor device can be provided by forming a gate structure on a substrate and forming a diffusion barrier layer on the gate structure and the substrate, A stress layer can be formed on the diffusion barrier layer comprising a metal nitride or a metal oxide having a concentration of nitrogen or oxygen associated therewith. The stress layer can be heated to transform the stress layer into a tensile stress layer to reduce the concentration of the nitrogen or the oxygen in the stress layer. The tensile stress layer and the diffusion barrier layer can be removed.
摘要:
A fin transistor includes fin active region, an isolation layer covering both sidewalls of a lower portion of the fin active region, a gate insulation layer disposed over a surface of the fin active region, and a gate electrode disposed over the gate insulation layer and the isolation layer, and having a work function ranging from approximately 4.4 eV to approximately 4.8 eV.
摘要:
A dielectric structure in a nonvolatile memory device and a method for fabricating the same are provided. The dielectric structure includes: a first oxide layer; a first high-k dielectric film formed on the first oxide layer, wherein the first high-k dielectric film includes one selected from materials with a dielectric constant of approximately 9 or higher and a compound of at least two of the materials; and a second oxide layer formed on the first high-k dielectric film.
摘要:
A semiconductor memory device includes a titanium layer and a titanium nitride layer formed on a substrate, a thin layer formed on the titanium nitride layer, and a metal layer formed on the thin layer, wherein the thin layer increases a grain size of the metal layer.