Abstract:
A semiconductor device with fin-shaped structure is disclosed. The semiconductor device includes: a substrate; a fin-shaped structure on the substrate; and an epitaxial layer on a top surface and part of the sidewall of the fin-shaped structure, in which the epitaxial layer and the fin-shaped structure includes a linear gradient of germanium concentration therebetween.
Abstract:
A method for manufacturing a metal gate structure includes providing a substrate having a high-K gate dielectric layer and a bottom barrier layer sequentially formed thereon, forming a work function metal layer on the substrate, and performing an anneal treatment to the work function metal layer in-situ.
Abstract:
A multigate field effect transistor includes two fin-shaped structures and a dielectric layer. The fin-shaped structures are located on a substrate. The dielectric layer covers the substrate and the fin-shaped structures. At least two voids are located in the dielectric layer between the two fin-shaped structures. Moreover, the present invention also provides a multigate field effect transistor process for forming said multigate field effect transistor including the following steps. Two fin-shaped structures are formed on a substrate. A dielectric layer covers the substrate and the two fin-shaped structures, wherein at least two voids are formed in the dielectric layer between the two fin-shaped structures.
Abstract:
Provided is a method of fabricating a semiconductor device including the following steps. A dummy gate structure is formed on a substrate, wherein the dummy gate structure includes a dummy gate and a stacked hard mask, and the stacked hard mask includes from bottom to top a first hard mask layer and a second hard mask layer. A spacer is formed on a sidewall of the dummy gate structure. A mask layer is formed on the substrate. An opening corresponding to the second hard mask layer is formed in the mask layer. The second hard mask layer is removed. The mask layer is removed. A dry etch process is performed to remove the first hard mask layer, wherein the dry etch process uses NF3 and H2 as etchants.
Abstract:
A semiconductor structure includes a fin-shaped structure and a gate. The fin-shaped structure is located in a substrate, wherein the fin-shaped structure has a through hole located right below a vacant part. The gate surrounds the vacant part. Moreover, the present invention also provides a semiconductor process including the following steps for forming said semiconductor structure. A substrate is provided. A fin-shaped structure is formed in the substrate, wherein the fin-shaped structure has a bottom part and a top part. A part of the bottom part is removed to form a vacant part in the corresponding top part, thereby forming the vacant part over a through hole. A gate is formed to surround the vacant part.
Abstract:
A strained silicon channel semiconductor structure comprises a substrate having an upper surface, a gate structure formed on the upper surface, at least one recess formed in the substrate at lateral sides of the gate structure, wherein the recess has at least one sidewall which has an upper sidewall and a lower sidewall concaved in the direction to the gate structure, and the included angle between the upper sidewall and horizontal plane ranges between 54.5°-90°, and an epitaxial layer filled into the two recesses.
Abstract:
A semiconductor device includes an oxide semiconductor layer, disposed over a substrate. A source electrode of a metal nitride is disposed on the oxide semiconductor layer. A drain electrode of the metal nitride is disposed on the oxide semiconductor layer. A metal-nitride oxidation layer is formed on a surface of the source electrode and the drain electrode. A ratio of a thickness of the metal-nitride oxidation layer to a thickness of the drain electrode or the source electrode is equal to or less than 0.2.
Abstract:
A semiconductor device includes a memory region, a plurality of bit lines in the memory region, a first low-k dielectric layer on each sidewall of each bit line, a plurality of storage node regions between the bit lines, and a second low-k dielectric layer surrounding each storage node region.
Abstract:
An epitaxial process applying light illumination includes the following steps. A substrate is provided. A dry etching process and a wet etching process are performed to form a recess in the substrate, wherein an infrared light illuminates while the wet etching process is performed. An epitaxial structure is formed in the recess.
Abstract:
A semiconductor device including a tungsten contact structure formed in a first dielectric layer on a substrate is provided. The tungsten contact structure contains a seam structure. A tungsten oxide layer is formed at least on a sidewall of the seam structure.