摘要:
A MOSFET structure with high-k gate dielectric layer and silicon or metal gates, amorphizing treatment of the high-k gate dielectric layer as with a plasma or ion implantation.
摘要:
A method and system for performing metal-organic chemical vapor deposition (MOCVD). The method introduces a metal-organic compound into the CVD chamber in the presence of a first reactant selected to have a reducing chemistry and then, subsequently, a second reactant selected to have an oxidizing chemistry. The reducing chemistry results in deposition of metal species having a reduced surface mobility creating more uniform coverage and better adhesion. The oxidizing species results in deposition of metal species having a greater surface mobility leading to greater surface agglomeration and faster growth. By alternating the two reacts, faster growth is achieved and uniformity of the metal structure is enhanced.
摘要:
An embodiment of the invention is a gate electrode 70 having a nitrided high work function metal alloy 170 and a low work function nitrided metal alloy 190. Another embodiment of the invention is a method of manufacturing a gate electrode 70 that includes forming and then patterning and etching a layer of high work function nitrided metal alloy 170, forming a layer of low work function nitrided metal alloy 190, and then patterning and etching layers 170 and 190.
摘要:
A method for improving high-&kgr; gate dielectric film (104) properties. The high-&kgr; film (104) is subjected to a two step anneal sequence. The first anneal is a high temperature anneal in a non-oxidizing ambient (106) such as N2 to densify the high-&kgr; film (104). The second anneal is a lower temperature anneal in an oxidizing ambient (108) to perform a mild oxidation that heals the high-&kgr; film and reduces interface defects.
摘要:
A method is provided for forming dual work function gate electrodes. A dielectric layer is provided outwardly of a substrate. A metal layer is formed outwardly of the dielectric layer. A silicon-germanium layer is formed outwardly of the metal layer. A first portion of the silicon-germanium layer is removed to expose a first portion of the metal layer, with a second portion of the silicon-germanium layer remaining over a second portion of the metal layer. A silicon-germanium metal compound layer is formed from the second portion of the silicon-germanium layer and the second portion of the metal layer. A first gate electrode comprising the first portion of the metal layer is formed. A second gate electrode comprising the silicon-germanium metal compound layer is formed.
摘要:
In part, disclosed are semiconductor processing methods, methods of depositing a tungsten comprising layer over a substrate, methods of depositing a tungsten nitride comprising layer over a substrate, methods of depositing a tungsten silicide comprising layer over a substrate, methods of forming a transistor gate line over a substrate, methods of forming a patterned substantially crystalline Ta2O5 comprising material, and methods of forming a capacitor dielectric region comprising substantially crystalline Ta2O5 comprising material. In one implementation, a semiconductor processing method includes forming a substantially amorphous Ta2O5 comprising layer over a semiconductive substrate. The layer is exposed to WF6 under conditions effective to etch substantially amorphous Ta2O5 from the substrate. In one implementation, the layer is exposed to WF6 under conditions effective to both etch substantially amorphous Ta2O5 from the substrate and deposit a tungsten comprising layer over the substrate during the exposing.
摘要翻译:部分地,公开了半导体处理方法,在衬底上沉积含钨层的方法,在衬底上沉积含氮化钨的层的方法,在衬底上沉积包含硅化钨的层的方法,形成晶体管栅极的方法 在衬底上划线,形成图案化的基本上结晶的Ta 2 O 5的材料的方法,以及形成包含基本上结晶的Ta 2 O 5的材料的电容器电介质区域的方法。 在一个实施方案中,半导体处理方法包括在半导体衬底上形成包含基本非晶态的Ta 2 O 5层。 该层在有效从底物上蚀刻基本无定形Ta 2 O 5的条件下暴露于WF6。 在一个实施方案中,该层在有效地从衬底上蚀刻基本上无定形Ta 2 O 5的条件下暴露于WF6,并在曝光期间在衬底上沉积含钨层。
摘要:
A plug is formed of polysilicon, or other oxidizable conductor. Chemical-mechanical polishing is performed, with a polish stop layer defining the top of the dielectric layer. The upper portion of the polysilicon is oxidized to a controlled depth, then the oxidized portion is removed by an etch, followed by removal of the polish stop layer. The plug thus formed protrudes a controllable distance above the surrounding dielectric, providing good contact to subsequent conductive layers.
摘要:
The invention provides a method for manufacturing a semiconductor device that comprises placing a metallic gate layer over a gate dielectric layer where the metallic gate layer has a crystallographic orientation, and re-orienting the crystallographic orientation of the metallic gate layer by subjecting the metallic gate layer to a hydrogen anneal.
摘要:
Example embodiments provide triple-gate semiconductor devices isolated by reverse shallow trench isolation (STI) structures and methods for their manufacture. In an example process, stacked layers including a form layer over a dielectric layer can be formed over a semiconductor substrate. One or more trenches can be formed by etching through the stacked layers. The one or more trenches can be filled by an active area material to form one or more active areas, which can be isolated by remaining portions of the dielectric layer. Bodies of the active area material can be exposed by removing the form layer. One or more triple-gate devices can then be formed on the exposed active area material. The example triple-gate semiconductor devices can control the dimensions for the active areas and provide less isolation spacing between the active areas, which optimizes manufacturing efficiency and device integration quality.
摘要:
A method includes providing a substrate having insulating layers thereon; forming a first trench in a first region of the substrate and a second trench in a second region of the substrate; thermally growing layers of oxide along the sides of the trenches; filling the first trench and the second trench with a polysilicon material, planarizing the polysilicon material, and creating a shallow trench isolation between the first region and the second region, wherein the step f) of creating the shallow trench isolation is performed only after the steps of d) filling and e) planarizing.