摘要:
A method of manufacturing a metal gate is provided. The method includes providing a substrate. Then, a gate dielectric layer is formed on the substrate. A multi-layered stack structure having a work function metal layer is formed on the gate dielectric layer. An O2 ambience treatment is performed on at least one layer of the multi-layered stack structure. A conductive layer is formed on the multi-layered stack structure.
摘要:
A method for fabricating MOS transistor includes the steps of: overlapping a second stress layer on an etching stop layer and a first stress layer at a boundary region of the substrate; forming a dielectric layer on the first stress layer and the second stress layer; performing a first etching process to partially remove the dielectric layer for exposing a portion of the second stress layer at the boundary region; performing a second etching process to partially remove the exposed portion of the second stress layer for exposing the etching stop layer; performing a third etching process to partially remove the exposed portion of the etching stop layer for exposing the first stress layer at the boundary region; and performing a fourth etching process partially remove the exposed portion of the first stress layer.
摘要:
A stacked structure for patterning a material layer to form an opening pattern with a predetermined opening width in the layer is provided. The stacked structure includes an underlayer, a silicon rich organic layer, and a photoresist layer. The underlayer is on the material layer. The silicon rich organic layer is between the underlayer and the photoresist layer. The thickness of the photoresist layer is smaller than that of the underlayer and larger than two times of the thickness of the silicon rich organic layer. The thickness of the underlayer is smaller than three times of the predetermined opening width.
摘要:
A stacked structure for patterning a material layer to form an opening pattern with a predetermined opening width in the layer is provided. The stacked structure includes an underlayer, a silicon rich organic layer, and a photoresist layer. The underlayer is on the material layer. The silicon rich organic layer is between the underlayer and the photoresist layer. The thickness of the photoresist layer is smaller than that of the underlayer and larger than two times of the thickness of the silicon rich organic layer. The thickness of the underlayer is smaller than three times of the predetermined opening width.
摘要:
A method of forming a contact hole is provided. A pattern is formed in a photo resist layer. The pattern is exchanged into a silicon photo resist layer to form a first opening. Another pattern is formed in another photo resist layer. The pattern is exchanged into a silicon photo resist layer to form a second opening. The pattern having the first, and second openings is exchanged into the interlayer dielectric layer, and etching stop layer to form the contact hole. The present invention has twice exposure processes and twice etching processes to form the contact hole having small distance.
摘要:
A method of removing the residue left after a plasma process is described. First, a substrate having at least a material layer thereon is provided. The material layer includes a metal. Then, a fluorine-containing plasma process is performed so that a residue containing the aforesaid metallic material is formed on the surface of the material layer. After that, a wet cleaning operation is performed using a cleaning agent to remove the residue. The cleaning agent is a solution containing water, a diluted hydrofluoric acid and an acid solution.
摘要:
A patterning method is provided. In the patterning method, a film is formed on a substrate and a pre-layer information is measured. Next, an etching process is performed to etch the film. The etching process includes a main etching step, an etching endpoint detection step, an extension etching step and an over etching step. An extension etching time for performing the extension etching step is set within 10 seconds based on a predetermined correlation between an extension etching time and the pre-layer information, so as to achieve a required film profile.
摘要:
A method of fabricating a semiconductor device is provided. The method includes forming a gate structure on a substrate. The gate structure includes a patterned gate dielectric layer, a patterned gate conductor layer, a cap layer and a spacer. Next, a first and a second recesses are formed in the substrate on the two sides of the gate structure. Thereafter, a protection layer is formed on the bottom surfaces of the first and the second recesses, and then a etching process is performed to laterally enlarge first and the second recesses towards the direction of the gate structure. Thereafter, a material layer is respectively formed in the first recess and the second recess. Afterward, two source/drain contact regions are respectively formed in the material layers of the first recess and the second recess.
摘要:
A method of trimming hard mask is provided. The method includes providing a substrate, a hard mask layer, and a tri-layer stack on the substrate. The tri-layer stack includes a top photo resist layer, a silicon photo resist layer, and a bottom photo resist layer. The top photo resist layer, the silicon photo resist layer, the bottom photo resist layer, and the hard mask layer are patterned sequentially. A trimming process is performed on the hard mask layer. The bottom photo resist layer of the present invention is thinner and loses some height in the etching process, so the bottom photo resist layer will not collapse.
摘要:
A method for fabricating a contact hole is provided. A semiconductor substrate having thereon a conductive region is prepared. A dielectric layer is deposited on the semiconductor substrate and the conductive region. An etching resistive layer is coated on the dielectric layer. A silicon-containing hard mask bottom anti-reflection coating (SHB) layer is then coated on the etching resistive layer. A photoresist layer is then coated on the SHB layer. A lithographic process is performed to form a first opening in the photoresist layer. Using the photoresist layer as a hard mask, the SHB layer is etched through the first opening, thereby forming a shrunk, tapered second opening in the SHB layer. Using the etching resistive layer as an etching hard mask, etching the dielectric layer through the second opening to form a contact hole in the dielectric layer.