CMOS semiconductor device and method of manufacturing the same
    82.
    发明授权
    CMOS semiconductor device and method of manufacturing the same 失效
    CMOS半导体器件及其制造方法

    公开(公告)号:US06750532B2

    公开(公告)日:2004-06-15

    申请号:US10336604

    申请日:2003-01-03

    CPC classification number: H01L21/2807 H01L21/823842

    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 translation: 在具有衬底的CMOS半导体器件中,形成在衬底上的栅极绝缘层,至少一个在至少一个PMOS晶体管区域中的衬底上形成的第一多晶硅栅极和至少一个第二多晶硅栅极,至少形成在衬底上至少一个 一个NMOS晶体管区域,第一多晶硅栅极中的Ge的总量与第二多晶硅栅极中的Ge的总量相同,第一和/或第二多晶硅栅极中的Ge浓度的分布根据与栅极绝缘的距离而不同 与栅极绝缘层相邻的第一多晶硅栅极的一部分中的Ge层浓度高于第二多晶硅栅极中的Ge浓度。 与栅极绝缘层相邻的第一多晶硅栅极部分的Ge浓度比第二多晶硅栅极中的Ge浓度高两倍。 例如,与栅极绝缘层相邻的第一多晶硅栅极的Ge浓度优选大于20%,与栅极绝缘层相邻的第二多晶硅栅极的部分中的Ge浓度低于10 %。

    MOS transistor having a T-shaped gate electrode and method for fabricating the same

    公开(公告)号:US06716689B2

    公开(公告)日:2004-04-06

    申请号:US10274035

    申请日:2002-10-21

    Abstract: A MOS transistor having a T-shaped gate electrode and a method for fabricating the same are provided, wherein the MOS transistor includes a T-shaped gate electrode on a semiconductor substrate; an L-shaped lower spacer disposed at both sides of the gate electrode to cover a top surface of the semiconductor substrate; and low-, mid-, and high-concentration impurity regions formed in the semiconductor substrate of both sides of the gate electrode. The high-concentration impurity region is disposed in the semiconductor substrate next to the lower spacer and the mid-concentration impurity region is disposed between the high- and low-concentration impurity regions. A MOS transistor according to the present invention provides a decrease in a capacitance, a decrease in a channel length, and an increase in a cross-sectional area of the gate electrode. At the same time, the mid-concentration impurity region provides a decrease in a source/drain resistance Rsd.

    Method for efficiently removing by-products produced in dry-etching
    84.
    发明授权
    Method for efficiently removing by-products produced in dry-etching 失效
    有效去除在干蚀刻中产生的副产物的方法

    公开(公告)号:US5674782A

    公开(公告)日:1997-10-07

    申请号:US611432

    申请日:1996-03-04

    CPC classification number: H01L21/02071 H01L21/28061 H01L21/32135

    Abstract: A method for efficiently removing by-products produced in dry-etching a fabricated structure of a semiconductor device, particularly, a polycide structure. The method includes the steps of sequentially forming a polysilicon layer and a refractory metal silicide layer to overlie previously fabricated structures on a semiconductor substrate, dry-etching the polysilicon layer and the refractory metal silicide layer to form a patterned polysilicon layer and a patterned refractory metal silicide layer, and thermal treating the resultant structure to remove at least one kind of by-product produced in the dry-etching step at a temperature higher than the boiling point of any by-product.

    Abstract translation: 一种用于有效地除去在干法蚀刻半导体器件,特别是多晶硅化物结构的制造结构中产生的副产物的方法。 该方法包括以下步骤:顺序地形成多晶硅层和难熔金属硅化物层以覆盖半导体衬底上先前制造的结构,干蚀刻多晶硅层和难熔金属硅化物层以形成图案化的多晶硅层和图案化的难熔金属 硅化物层,并对所得结构进行热处理,以在高于任何副产物的沸点的温度下除去在干蚀刻步骤中产生的至少一种副产物。

    METHODS OF MANUFACTURING SEMICONDUCTOR DEVICES INCLUDING CONDUCTIVE STRUCTURES
    87.
    发明申请
    METHODS OF MANUFACTURING SEMICONDUCTOR DEVICES INCLUDING CONDUCTIVE STRUCTURES 有权
    制造导电结构的半导体器件的方法

    公开(公告)号:US20160163589A1

    公开(公告)日:2016-06-09

    申请号:US14955988

    申请日:2015-12-01

    Abstract: A method of forming a semiconductor device can include forming an insulation layer using a material having a composition selected to provide resistance to subsequent etching process. The composition of the material can be changed to reduce the resistance of the material to the subsequent etching process at a predetermined level in the insulation layer. The subsequent etching process can be performed on the insulation layer to remove an upper portion of the insulation layer above the predetermined level and leave a lower portion of the insulation layer below the predetermined level between adjacent conductive patterns extending through the lower portion of the insulation layer. A low-k dielectric material can be formed on the lower portion of the insulation layer between the adjacent conductive patterns to replace the upper portion of the insulation layer above the predetermined level.

    Abstract translation: 形成半导体器件的方法可以包括使用具有选择为提供对后续蚀刻工艺的电阻的组成的材料形成绝缘层。 可以改变材料的组成以将材料的电阻降低到绝缘层中预定水平的后续蚀刻工艺。 可以在绝缘层上执行随后的蚀刻工艺,以将绝缘层的上部去除在预定水平以上,并且将绝缘层的下部分留在延伸穿过绝缘层的下部的相邻导电图案之间的预定水平以下 。 可以在相邻导电图案之间的绝缘层的下部上形成低k介电材料,以将绝缘层的上部替换为高于预定水平。

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