摘要:
A three-terminal semiconductor transistor device comprises a base region formed by a semiconductor material of a first conductivity type at a first concentration, the base region being in contact with a first electrical terminal via a semiconductor material of the second conductivity type at a second concentration, wherein the second concentration is lower than the first concentration. The three-terminal semiconductor transistor device also includes a conductive emitter region in contact with the semiconductor base region, forming a first Schottky barrier junction at the interface of the conductive emitter region and the semiconductor base region. The conductive emitter region is in contact with a second electrical terminal. The three-terminal semiconductor transistor device further includes a conductive collector region in contact with the semiconductor base region, which forms a second Schottky barrier junction at the interface of the conductive collector region and the semiconductor base region. The conductive collector region is in contact with a third electrical terminal. The tunneling current through the first Schottky barrier junction or the second Schottky barrier junction is substantially controlled by the voltage of the semiconductor base region.
摘要:
A process wherein an insulating region is formed in a body at least around an array portion of a semiconductor body; a gate electrode of semiconductor material is formed on top of a circuitry portion of the semiconductor body; a first silicide protection mask is formed on top of the array portion; the gate electrode and the active areas of the circuitry portion are silicided and the first silicide protection mask is removed. The first silicide protection mask (is of polysilicon and is formed simultaneously with the gate electrode. A second silicide protection mask of dielectric material covering the first silicide protection mask is formed before silicidation of the gate electrode. The second silicide protection mask is formed simultaneously with spacers formed laterally to the gate electrode.
摘要:
A conductive connection forming method includes forming a first layer comprising a first metal on a substrate and forming a second layer comprising a second metal different from the first metal on the first layer. At least a part of the first layer may be transformed to an alloy material comprising the first and second metals. A conductive connection may be formed to the alloy material. The alloy material may be less susceptible to formation of metal oxide compared to the first metal. By way of example, transforming the first layer may comprise annealing the first and second layer. An exemplary first metal comprises copper, and an exemplary second metal comprises aluminum, titanium, palladium, magnesium, or two or more such metals. The alloy material may be an intermetallic. A conductive connection may be formed to the alloy layer. An integrated circuit includes a semiconductive substrate, a layer comprising a first metal over the substrate, and a layer of alloy material within the first metal comprising layer. The alloy material layer may comprise the first metal and a second metal different from the first metal. The alloy material may be an intermetallic. A conductive connection may be formed on the alloy layer.
摘要:
A protective layer is formed on a metallic layer prior to forming a metallic silicide layer, and the protective layer has a thickness thicker than that of the metallic layer.
摘要:
A process of synthesizing metal and metal nitride nanowires, the steps comprising of: forming a catalytic metal (such as gallium, and indium) on a substrate (such as fused silica quartz, pyrolytic boron nitride, alumina, and sapphire), heating the combination in a pressure chamber, adding gaseous reactant and/or solid metal source, applying sufficient microwave energy (or current in hot filament reactor) to activate the metal of interest (such as gold, copper, tungsten, and bismuth) and continuing the process until nanowires of the desired length are formed. The substrate may be fused silica quartz, the catalytic metal a gallium or indium metal, the gaseous reactant is nitrogen and/or hydrogen and the nanowires are tungsten nitride and/or tungsten.
摘要:
A cobalt-containing film on a silicon-containing conductive region, and a titanium-rich capping layer is formed on cobalt-containing film. The atomic % ratio of titanium to other elements (if any) in the titanium-rich capping layer is more than one (1). The resultant structure is annealed so that cobalt of the cobalt-containing film and silicon of the silicon-containing conductive region react with each other to form a cobalt silicide film. When the formation of the cobalt-containing film is carried out at a high temperature, a diffusion restraint interface film is also formed.
摘要:
A process of making a buried digit line stack is disclosed. The process includes forming a silicon-lean metal silicide first film over a polysilicon plug, followed by a silicide compound barrier second film. The silicide compound barrier second film is covered with a refractory metal third film. A salicidation process causes the first film to salicide with the polysilicon plug. In one embodiment, all the aforementioned deposition processes are carried out by physical vapor deposition (nullPVDnull).
摘要:
The present invention provides a semiconductor device with InxGa1-xN crystal passivation layer and manufacturing method thereof which effectively blocks the leakage current between the surface & boundary of a device and a pn-junction boundary, and enhances the light emission efficiency as forming new structural semiconductor devices by removing the conventional dielectric passivation layer and using InxGa1-xN crystal layer instead. A semiconductor device with gallium nitride type crystal passivation layer, wherein said semiconductor device has a p-n junction diode construction and forms a InxGa1-xN crystal passivation layer with a specified thickness and a width around the edge of the upper surface of p-GaN layer which is the top layer of the semiconductor device.
摘要翻译:本发明提供了具有In x Ga 1-x N晶体钝化层的半导体器件及其制造方法,其有效地阻止器件的表面和边界与pn结边界之间的漏电流,并且在形成新的结构半导体时提高发光效率 通过去除常规介电钝化层并使用In x Ga 1-x N晶体层来代替。 一种具有氮化镓型晶体钝化层的半导体器件,其中所述半导体器件具有pn结二极管结构并形成具有指定厚度和围绕p-GaN层上表面边缘的宽度的In x Ga 1-x N晶体钝化层, 是半导体器件的顶层。
摘要:
A compound semiconductor structure is provided, which includes a GaAs-based supporting semiconductor structure having a surface on which a dielectric material is to be formed. A first layer of gallium oxide is located on the surface of the supporting semiconductor structure to form an interface therewith. A second layer of a GanullGd oxide is disposed on the first layer. The GaAs-based supporting semiconductor structure may be a GaAs-based heterostructure such as an at least partially completed semiconductor device (e.g., a metal-oxide field effect transistor, a heterojunction bipolar transistor, or a semiconductor laser). In this manner a dielectric layer structure is provided which has both a low defect density at the oxide-GaAs interface and a low oxide leakage current density because the dielectric structure is formed from a layer of Ga2O3 followed by a layer of GanullGd-oxide. The Ga2O3 layer is used to form a high quality interface with the GaAs-based supporting semiconductor structure while the GanullGd-oxide provides a low oxide leakage current density.
摘要翻译:提供了一种化合物半导体结构,其包括具有其上将要形成介电材料的表面的GaAs基支撑半导体结构。 第一层氧化镓位于支撑半导体结构的表面上以与其形成界面。 在第一层上设置第二层Ga-Gd氧化物。 基于GaAs的支撑半导体结构可以是诸如至少部分完成的半导体器件(例如,金属氧化物场效应晶体管,异质结双极晶体管或半导体激光器)的基于GaAs的异质结构。 以这种方式,提供了在氧化物 - GaAs界面处具有低缺陷密度和低氧化物漏电流密度的电介质层结构,因为电介质结构由Ga 2 O 3层,然后由Ga-Gd-氧化物层形成 。 Ga 2 O 3层用于与GaAs基支持半导体结构形成高质量的界面,而Ga-Gd氧化物提供低的氧化物漏电流密度。
摘要:
A gate electrode is formed in the following manner. A first resist layer having a first opening is formed on a semiconductor substrate. A second resist layer having a second opening larger than the first opening is formed on the first resist layer. A first conductor layer containing a high-melting-point metal is formed. Subsequently, a second conductor layer containing low-resistance metal is formed, and then the first conductor layer within the second opening is removed by etching. Next, the second resist layer is removed by a lift-off process, and finally the first resist layer is removed by ashing.