Abstract:
A semiconductor device comprises a silicate interface layer and a high-k dielectric layer overlying the silicate interface layer. The high-k dielectric layer comprises metal alloy oxides.
Abstract:
A method of fabricating a semiconductor integrated circuit device, including providing a semiconductor substrate, sequentially forming an etching target layer and a hard mask layer on the semiconductor substrate, forming first etch masks on the hard mask layer, the first etch masks including a plurality of first line patterns spaced apart from one another at a first pitch and extending in a first direction, forming first hard mask patterns by etching the hard mask layer using the first etch masks, forming second etch masks on the first hard mask patterns, the second etch masks including a plurality of second line patterns spaced apart from one another at a second pitch and extending in a second direction different from the first direction, forming second hard mask patterns by etching the first hard mask patterns using the second etch masks, forming spacers on sidewalls of the second hard mask patterns, and patterning the etching target layer using the second hard mask patterns having the spacers.
Abstract:
CMOS integrated circuit devices include an electrically insulating layer and an unstrained silicon active layer on the electrically insulating layer. An insulated gate electrode is also provided on a surface of the unstrained silicon active layer. A Si1-xGex layer is also disposed between the electrically insulating layer and the unstrained silicon active layer. The Si1-xGex layer forms a first junction with the unstrained silicon active layer and has a graded concentration of Ge therein that decreases monotonically in a first direction extending from a peak level towards the surface of the unstrained silicon active layer. The peak Ge concentration level is greater than x=0.15 and the concentration of Ge in the Si1-xGex layer varies from the peak level to a level less than about x=0.1 at the first junction. The concentration of Ge at the first junction may be abrupt. More preferably, the concentration of Ge in the Si1-xGex layer varies from the peak level where 0.2
Abstract translation:CMOS集成电路器件包括电绝缘层和电绝缘层上的非限制性硅有源层。 绝缘栅电极也设置在未应变硅有源层的表面上。 Si 1-x Ge Ge层还设置在电绝缘层和未应变硅有源层之间。 Si 1-x N Ge x S层与未应变的硅有源层形成第一结,并且其中的Ge的分级浓度在从第一方向延伸的第一方向上单调减小 峰值电平朝向未应变硅活性层的表面。 峰值Ge浓度水平大于x = 0.15,并且Si 1-x Ga x层中的Ge浓度从峰值水平变化到小于约 x = 0.1。 Ge在第一结处的浓度可能是突然的。 更优选的是,Si 1-x Ge 2 x层中的Ge的浓度从0.2
Abstract:
High dielectric layers formed from layers of hafnium oxide, zirconium oxide, aluminum oxide, yttrium oxide, and/or other metal oxides and silicates disposed on silicon substrates or ozone oxide layers over silicon substrates may be nitrided and post thermally treated by oxidation, annealing, or a combination of oxidation and annealing to form high dielectric layers having superior mobility and interfacial characteristics.
Abstract:
A method of manufacturing a non-volatile semiconductor memory device begins by forming a dielectric layer pattern having an ONO composition on a substrate. A polysilicon layer is formed on the substrate including over the dielectric layer pattern. The polysilicon layer is patterned to form a split polysilicon layer pattern that exposes part of the dielectric layer pattern. The exposed dielectric layer is etched, and then impurities are implanted into portions of the substrate using the split polysilicon layer pattern as a mask to thereby form a source region having a vertical profile in the substrate.
Abstract:
The present invention provides a semiconductor transistor using an L-shaped spacer. The semiconductor transistor includes a gate pattern formed on a semiconductor substrate and an L-shaped third spacer formed beside the gate pattern and having a horizontal protruding portion. An L-shaped fourth spacer is formed between the third spacer and the gate pattern, and between the third spacer and the substrate. A high-concentration junction area is positioned in the substrate beyond the third spacer, and a low-concentration junction area is positioned under the horizontal protruding portion of the third spacer. A medium-concentration junction area is positioned between the high- and low-concentration junction areas.
Abstract:
A semiconductor device includes a hetero grain stack gate (HGSG). The device includes a semiconductor substrate having a surface, a gate insulating layer formed over the surface of the semiconductor substrate, and a gate electrode formed over the gate insulating layer, wherein the gate electrode includes a lower poly-SiGe layer having a columnar crystalline structure, and an upper poly-Si layer having a random crystalline structure. In one embodiment, the gate electrode includes a lower poly-SiGe layer having a columnar crystalline structure, an intermediate layer having an random crystalline structure, and an upper poly-Si layer having a columnar crystalline structure. A method of manufacturing a semiconductor device having an HGSG comprises depositing a gate insulating layer over a surface of a semiconductor substrate, depositing a lower poly-SiGe layer having a columnar crystalline structure over the gate insulating layer, depositing an amorphous Si layer over the lower poly-SiGe layer, and crystallizing the amorphous Si layer to obtain an upper poly-Si layer having a random crystalline structure.
Abstract:
High dielectric layers formed from layers of hafnium oxide, zirconium oxide, aluminum oxide, yttrium oxide, and/or other metal oxides and silicates disposed on silicon substrates may be nitrided and post thermally treated by oxidation, annealing, or a combination of oxidation and annealing to form high dielectric layers having superior mobility and interfacial characteristics.
Abstract:
In a CMOS semiconductor device having a substrate, a gate insulating layer formed on the substrate, at least one first polysilicon gate formed over the substrate in at least one PMOS transistor region, and at least one second polysilicon gate formed over the substrate in at least one NMOS transistor region, a total amount of Ge in the first polysilicon gate is the same as that in the second polysilicon gate, a distribution of Ge concentration in the first and/or second polysilicon gate is different according to a distance from the gate insulating layer, and Ge concentration in a portion of the first polysilicon gate adjacent to the gate insulating layer is higher than that in the second polysilicon gate. The Ge concentration in the portion of the first polysilicon gate adjacent to the gate insulating layer is more than two times as high as that in the second polysilicon gate. For example, it is preferable that the Ge concentration in the portion of the first polysilicon gate adjacent to the gate insulating layer is more than 20%, and Ge concentration in a portion of the second polysilicon gate adjacent to the gate insulating layer is below 10%.
Abstract:
A gate electrode in a semiconductor device comprising; a gate oxide layer formed on a semiconductor substrate, a polysilicon layer formed on the gate oxide layer, a silicide layer formed on the polysilicon layer and, a metal silicide layer formed on the silicide layer.