Low resistance and reliable copper interconnects by variable doping
    13.
    发明授权
    Low resistance and reliable copper interconnects by variable doping 有权
    低电阻和可靠的铜互连可变掺杂

    公开(公告)号:US08053892B2

    公开(公告)日:2011-11-08

    申请号:US11341827

    申请日:2006-01-27

    IPC分类号: H01L23/48

    摘要: A method and system is provided for efficiently varying the composition of the metal interconnects for a semiconductor device. A metal interconnect according to the present disclosure has an intermediate layer on a dielectric material, the intermediate layer having a relatively higher concentration of an impurity metal along with a primary metal, the impurity metal having a lower reduction potential than the primary metal. The metal interconnect has a main layer of the metal alloy interconnect on top of the intermediate layer and surrounded by the intermediate layer, the main layer having a relatively higher concentration of the primary metal than the intermediate layer, wherein the intermediate and main layers of the metal alloy interconnect each maintains a material uniformity.

    摘要翻译: 提供了一种方法和系统,用于有效地改变半导体器件的金属互连的组成。 根据本公开的金属互连在电介质材料上具有中间层,中间层与主金属一起具有较高浓度的杂质金属,杂质金属具有比初级金属低的还原电位。 金属互连件在中间层的顶部具有金属合金互连的主层,被中间层包围,主层具有比中间层更高的一次金属浓度,其中,中间层和中间层的中间层和主要层 金属合金互连件均保持材料均匀性。

    Novel Approach to Reduce the Contact Resistance
    14.
    发明申请
    Novel Approach to Reduce the Contact Resistance 有权
    降低接触电阻的新方法

    公开(公告)号:US20090191684A1

    公开(公告)日:2009-07-30

    申请号:US12021062

    申请日:2008-01-28

    IPC分类号: H01L21/336

    摘要: A method for fabricating a semiconductor device is disclosed. First, a semiconductor substrate having a doped region(s) is provided. Thereafter, a pre-amorphous implantation process and neutral (or non-neutral) species implantation process is performed over the doped region(s) of the semiconductor substrate. Subsequently, a silicide is formed in the doped region(s). By conducting a pre-amorphous implantation combined with a neutral species implantation, the present invention reduces the contact resistance, such as at the contact area silicide and source/drain substrate interface.

    摘要翻译: 公开了一种制造半导体器件的方法。 首先,提供具有掺杂区域的半导体衬底。 此后,在半导体衬底的掺杂区域上执行预非晶体注入工艺和中性(或非中性)物质注入工艺。 随后,在掺杂区域中形成硅化物。 通过进行与中性物质注入组合的预非晶注入,本发明降低了接触电阻,例如在接触面积硅化物和源极/漏极衬底界面处。

    Damascene interconnect structure with cap layer
    16.
    发明申请
    Damascene interconnect structure with cap layer 有权
    镶嵌互连结构与盖层

    公开(公告)号:US20060118962A1

    公开(公告)日:2006-06-08

    申请号:US11004767

    申请日:2004-12-03

    IPC分类号: H01L23/48 H01L23/52

    摘要: A method of forming an integrated circuit interconnect structure is presented. A first conductive line is formed over a semiconductor substrate. A conductive cap layer is formed on the first conductive line to improve device reliability. An etch stop layer (ESL) is formed on the conductive cap layer. An inter-level dielectric (IMD) is formed on the ESL. A via opening and a trench are formed in the ESL, IMD, and conductive cap layer. A recess is formed in the first conductive line. The recess can be formed by over etching when the first dielectric is etched, or by a separate process such as argon sputtering. A second conductive line is formed filling the trench, opening and recess.

    摘要翻译: 提出了一种形成集成电路互连结构的方法。 在半导体衬底上形成第一导电线。 导电盖层形成在第一导电线上以提高器件的可靠性。 在导电盖层上形成蚀刻停止层(ESL)。 在ESL上形成层间电介质(IMD)。 通孔和沟槽形成在ESL,IMD和导电盖层中。 在第一导线中形成凹部。 当蚀刻第一电介质时,或者通过诸如氩气溅射的分离工艺,可以通过过蚀刻形成凹部。 形成第二导电线,填充沟槽,开口和凹陷。

    LOW RESISTANCE AND RELIABLE COPPER INTERCONNECTS BY VARIABLE DOPING
    19.
    发明申请
    LOW RESISTANCE AND RELIABLE COPPER INTERCONNECTS BY VARIABLE DOPING 有权
    低电阻和可靠的铜互连通过可变掺杂

    公开(公告)号:US20120021602A1

    公开(公告)日:2012-01-26

    申请号:US13249823

    申请日:2011-09-30

    IPC分类号: H01L21/768

    摘要: A method and system is provided for efficiently varying the composition of the metal interconnects for a semiconductor device. A metal interconnect according to the present disclosure has an intermediate layer on a dielectric material, the intermediate layer having a relatively higher concentration of an impurity metal along with a primary metal, the impurity metal having a lower reduction potential than the primary metal. The metal interconnect has a main layer of the metal alloy interconnect on top of the intermediate layer and surrounded by the intermediate layer, the main layer having a relatively higher concentration of the primary metal than the intermediate layer, wherein the intermediate and main layers of the metal alloy interconnect each maintains a material uniformity.

    摘要翻译: 提供了一种方法和系统,用于有效地改变半导体器件的金属互连的组成。 根据本公开的金属互连在电介质材料上具有中间层,中间层与主金属一起具有较高浓度的杂质金属,杂质金属具有比初级金属低的还原电位。 金属互连件在中间层的顶部具有金属合金互连的主层,被中间层包围,主层具有比中间层更高的一次金属浓度,其中,中间层和中间层的中间层和主要层 金属合金互连件均保持材料均匀性。