摘要:
A method for forming a strained channel in a semiconductor device is provided, comprises providing of a transistor comprising a gate stack exposed with a gate electrode on a semiconductor substrate, a pair of source/drain regions in the substrate on opposite sides of the gate stack and a pair of spacers on opposing sidewalls of the gate stack. A passivation layer is formed to cover the gate electrode and spacers of the transistor. A passivation layer is formed to cover the gate electrode and the spacers. A recess region is formed in each of the source/drain regions, wherein an edge of the recess region aligns to an outer edge of the spacers. The recess regions are filled with a strain-exerting material, thereby forming a strained channel region in the semiconductor substrate between the source/drain regions.
摘要:
A method of forming an opening on a low-k dielectric layer using a polysilicon hard mask rather than a metal hard mask as used in prior art. A polysilicon hard mask is formed over a low-k dielectric layer and a photoresist layer is formed over the polysilicon hard mask. The photoresist layer is patterned and the polysilicon hard mask is etched with a gas plasma to create exposed portions of the low-k dielectric layer. The photoresist layer in stripped prior to the etching of the exposed portions of the low-k dielectric layer to avoid damage to the low-k dielectric layer.
摘要:
A thin film dielectric layer comprises a top portion and a bottom portion and has density and permittivity characteristics that vary substantially uniformly from the top portion to the bottom portion. Control over the density and/or permittivity is accomplished through varying deposition parameters such as flow rate of constituent process gases or deposition chamber pressure, or through a post deposition treatment, such as plasma treatment or curing.
摘要:
A method for manufacturing an integrated circuit is provided. In one example, the method includes forming a substantially nitrogen-free silicon carbide layer over a substrate using a methyl silicate gas.
摘要:
A method for fabricating a strained-silicon semiconductor device to ameliorate undesirable variation in epitaxial film thickness. The layout or component configuration for the proposed semiconductor device is evaluated to determine areas of relatively light or dense population in order to determine whether local-loading-effect defects are likely to occur. If a possibility of such defects occurring exists, a dummy pattern of epitaxial structures may be indicated. If so, the dummy pattern appropriate to the proposed layout is created, incorporated into the mask design, and then implemented on the substrate along with the originally-proposed component configuration.
摘要:
An integrated circuit chip includes a buffer layer, an underlying layer, a dielectric layer, a hole, and barrier layer. The buffer layer is over the underlying layer. The dielectric layer is over the buffer layer. The hole is formed in and extending through the dielectric layer and the buffer layer, and opens to the underlying layer. The hole includes a buffer layer portion at the buffer layer and a dielectric layer portion at the dielectric layer. At least part of the buffer layer portion of the hole has a larger cross-section area than a smallest cross-section area of the dielectric layer portion of the hole. The conformal barrier layer covers surfaces of the dielectric layer and the buffer layer in the hole. The hole is a via hole or a contact hole that is later filled with a conductive material to form a conductive via or a conductive contact.
摘要:
The present disclosure provides a method, integrated circuit, and interconnect structure utilizing non-metal barrier copper damascene integration. The method is provided for fabricating an interconnect for connecting to one or more front end of line (FEOL) devices. The method includes forming a layer of doped oxide on the one or more FEOL devices and forming a first barrier layer on the layer of doped oxide, the first barrier layer comprising such material as silicon oxycarbide (SiOC) or silicon carbonitride (SiCN). The method further includes forming a plurality of refractory metal plugs in the first barrier layer and the doped oxide layer, forming a low dielectric constant film over the first barrier layer and the plurality of refractory metal plugs, and performing a first etch to create trenches through the low dielectric constant film. The plurality of refractory metal plugs and the first barrier layer perform as an etch-stop.
摘要:
A method for forming a patterned microelectronics layer within a microelectronics fabrication. There is first provided a substrate employed within a microelectronics fabrication. There is then formed over the substrate an oxygen containing plasma etchable microelectronics layer. There is then formed upon the oxygen containing plasma etchable microelectronics layer a hard mask layer. There is then formed upon the hard mask layer a patterned photoresist layer. There is then etched through use of a first anisotropic plasma etch method the hard mask layer to form a patterned hard mask layer while employing the patterned photoresists layer as a first etch mask layer. The first anisotropic plasma etch method employs an etchant gas composition appropriate for etching a hard mask material from which is formed the hard mask layer. There is then etched through use of a second plasma etch method the patterned photoresist layer from the patterned hard mask layer while employing the patterned hard mask layer as an etch stop layer while simultaneously etching the oxygen containing plasma etchable microelectronics layer while employing at least the patterned hard mask layer as a second etch mask layer to form a patterned oxygen containing plasma etchable microelectronics layer. The second plasma etch method employs an oxygen containing etchant gas composition. The method is particularly useful for forming patterned oxygen containing plasma etchable microelectronics dielectric layers within microelectronics fabrications.
摘要:
A method of forming copper interconnects for an integrated circuit is provided. An antireflective coating layer is formed over an insulating layer formed over a semiconductor substrate. An interconnect pattern is patterned and etched into said insulating layer. A diffusion barrier layer is then conformally deposited in a deposition chamber along the etched interconnect pattern, wherein the antireflective coating is removed in said chamber before deposition of the barrier layer. Copper interconnects are then formed in the interconnect pattern etched in the insulating layer.
摘要:
A method for preventing formation of photoresist scum. First, a substrate on which a dielectric layer is formed is provided. Next, a non-nitrogen anti-reflective layer is formed on the dielectric layer. Finally, a photoresist pattern layer is formed on the non-nitrogen anti-reflective layer. During the formation of the photoresist pattern layer, the non-nitrogen anti-reflective layer does not react with the photoresist pattern layer, thus not forming photoresist scum. This prevents undesired etching profile and critical dimension (CD) change due to presence of photoresist scum. The non-nitrogen anti-reflective layer can be silicon-rich oxide (SiOx) or hydrocarbon-containing silicon-rich oxide (SiOxCy:H).
摘要翻译:防止光刻胶浮渣形成的方法。 首先,提供形成介电层的基板。 接下来,在电介质层上形成非氮抗反射层。 最后,在非氮抗反射层上形成光刻胶图形层。 在形成光致抗蚀剂图案层期间,非氮抗反射层不与光致抗蚀剂图案层反应,因此不形成光致抗蚀剂浮渣。 这防止由于存在光致抗蚀剂浮渣而引起的不期望的蚀刻轮廓和临界尺寸(CD)变化。 非氮抗反射层可以是富氧氧化物(SiO 2)或含烃的富含氧的氧化物(SiO x x C y) SUB>:H)。