Semiconductor device containing an aluminum tantalum carbonitride barrier film and method of forming
    2.
    发明授权
    Semiconductor device containing an aluminum tantalum carbonitride barrier film and method of forming 有权
    含有氮化钽碳氮化物阻挡膜的半导体器件及其形成方法

    公开(公告)号:US08026168B2

    公开(公告)日:2011-09-27

    申请号:US11839410

    申请日:2007-08-15

    IPC分类号: H01L21/4763

    摘要: The method includes providing a substrate containing a dielectric layer having a recessed feature and forming a aluminum tantalum carbonitride barrier film over a surface of the recessed feature. The aluminum tantalum carbonitride barrier film is formed by depositing a plurality of tantalum carbonitride films, and depositing aluminum between each of the plurality of tantalum carbonitride films. One embodiment further comprises depositing a Ru film on the aluminum tantalum carbonitride barrier film, depositing a Cu seed layer on the Ru film, and filling the recessed feature with bulk Cu. A semiconductor device containing an aluminum tantalum carbonitride barrier film is described.

    摘要翻译: 该方法包括提供含有具有凹陷特征的介电层的基板,并在凹陷特征的表面上形成铝钽碳氮化物阻挡膜。 通过沉积多个碳氮化钽膜并在多个碳氮化钽薄膜中的每一个之间沉积铝来形成氮化钽碳氮化物阻挡膜。 一个实施例还包括在氮化钽碳氮化物阻挡膜上沉积Ru膜,在Ru膜上沉积Cu籽晶层,并用体积Cu填充凹陷特征。 描述了包含氮化钽碳氮化物阻挡膜的半导体器件。

    Method for forming cobalt tungsten cap layers
    3.
    发明授权
    Method for forming cobalt tungsten cap layers 有权
    形成钴钨帽层的方法

    公开(公告)号:US07718527B2

    公开(公告)日:2010-05-18

    申请号:US12242914

    申请日:2008-10-01

    IPC分类号: H01L21/4763

    摘要: A method is provided for integrating cobalt tungsten cap layers into manufacturing of semiconductor devices to improve electromigration and stress migration in copper (Cu) metal. One embodiment includes providing a patterned substrate containing a recessed feature formed in a low-k material and a first metallization layer at the bottom of the feature, forming a cobalt tungsten cap layer on the first metallization layer, depositing a barrier layer in the recessed feature, including on the low-k dielectric material and on the first cobalt metal cap layer, and filling the recessed feature with Cu metal. Another embodiment includes providing a patterned substrate having a substantially planar surface with Cu paths and low-k regions, and forming a cobalt tungsten cap layer on the Cu paths.

    摘要翻译: 提供了一种用于将钴钨帽层集成到半导体器件制造中以改善铜(Cu)金属中的电迁移和应力迁移的方法。 一个实施例包括提供包含形成在低k材料中的凹陷特征的图案化基底和位于特征底部的第一金属化层,在第一金属化层上形成钴钨帽层,在凹陷特征中沉积阻挡层 包括在低k电介质材料和第一钴金属帽层上,并用Cu金属填充凹陷特征。 另一实施例包括提供具有Cu路径和低k区域的基本上平坦的表面的图案化衬底,以及在Cu路径上形成钴钨帽层。

    METHOD FOR FORMING COBALT TUNGSTEN CAP LAYERS
    4.
    发明申请
    METHOD FOR FORMING COBALT TUNGSTEN CAP LAYERS 有权
    形成钴铁矿石层的方法

    公开(公告)号:US20100081276A1

    公开(公告)日:2010-04-01

    申请号:US12242914

    申请日:2008-10-01

    IPC分类号: H01L21/768

    摘要: A method is provided for integrating cobalt tungsten cap layers into manufacturing of semiconductor devices to improve electromigration and stress migration in copper (Cu) metal. One embodiment includes providing a patterned substrate containing a recessed feature formed in a low-k material and a first metallization layer at the bottom of the feature, forming a cobalt tungsten cap layer on the first metallization layer, depositing a barrier layer in the recessed feature, including on the low-k dielectric material and on the first cobalt metal cap layer, and filling the recessed feature with Cu metal. Another embodiment includes providing a patterned substrate having a substantially planar surface with Cu paths and low-k regions, and forming a cobalt tungsten cap layer on the Cu paths.

    摘要翻译: 提供了一种用于将钴钨帽层集成到半导体器件制造中以改善铜(Cu)金属中的电迁移和应力迁移的方法。 一个实施例包括提供包含形成在低k材料中的凹陷特征的图案化基底和位于特征底部的第一金属化层,在第一金属化层上形成钴钨帽层,在凹陷特征中沉积阻挡层 包括在低k电介质材料和第一钴金属帽层上,并用Cu金属填充凹陷特征。 另一实施例包括提供具有Cu路径和低k区域的基本上平坦的表面的图案化衬底,以及在Cu路径上形成钴钨帽层。

    DIFFUSION BARRIER AND ADHESION LAYER FOR AN INTERCONNECT STRUCTURE
    6.
    发明申请
    DIFFUSION BARRIER AND ADHESION LAYER FOR AN INTERCONNECT STRUCTURE 有权
    用于互连结构的扩散障碍物和粘合层

    公开(公告)号:US20100078818A1

    公开(公告)日:2010-04-01

    申请号:US12242416

    申请日:2008-09-30

    IPC分类号: H01L23/48

    摘要: An interconnect structure is provided. The interconnect structure includes an interconnect opening formed within a dielectric material, a diffusion barrier on the dielectric material, where the diffusion barrier contains a compound from a thermal reaction between cobalt (Co) metal from at least a portion of a cobalt metal layer formed on the dielectric material and a dielectric reactant element from the dielectric material. The interconnect structure further includes a cobalt nitride adhesion layer in the interconnect opening, and a Cu metal fill in the interconnect opening, wherein the diffusion barrier and the cobalt nitride adhesion layer surround the Cu metal fill within the interconnect opening.

    摘要翻译: 提供互连结构。 所述互连结构包括形成在电介质材料内的互连开口,介电材料上的扩散阻挡层,其中所述扩散阻挡层包含来自在钴金属层的至少一部分上形成的钴(Co)金属之间的热反应的化合物 电介质材料和介电反应物元件。 所述互连结构还包括所述互连开口中的氮化钴粘合层和所述互连开口中的Cu金属填充物,其中所述扩散阻挡层和所述钴酸钾粘附层围绕所述互连开口内的所述Cu金属填充物。

    Diffusion barrier for integrated circuits formed from a layer of reactive metal and method of fabrication
    7.
    发明授权
    Diffusion barrier for integrated circuits formed from a layer of reactive metal and method of fabrication 有权
    由反应金属层形成的集成电路的扩散势垒和制造方法

    公开(公告)号:US08372739B2

    公开(公告)日:2013-02-12

    申请号:US11691167

    申请日:2007-03-26

    IPC分类号: H01L21/4763

    摘要: An interconnect structure for an integrated circuit and method of forming the interconnect structure. The method includes depositing a metallic layer containing a reactive metal in an interconnect opening formed within a dielectric material containing a dielectric reactant element, thermally reacting at least a portion of the metallic layer with at least a portion of the dielectric material to form a diffusion barrier primarily containing a compound of the reactive metal from the metallic layer and the dielectric reactant element from the dielectric material, and filling the interconnect opening with Cu metal, where the diffusion barrier surrounds the Cu metal within the opening. The reactive metal can be Co, Ru, Mo, W, or Ir, or a combination thereof. The interconnect opening can be a trench, a via, or a dual damascene opening.

    摘要翻译: 用于集成电路的互连结构和形成互连结构的方法。 该方法包括在包含介电反应物元件的电介质材料中形成的互连开口中沉积含有活性金属的金属层,使金属层的至少一部分与电介质材料的至少一部分热反应形成扩散阻挡层 主要包含来自金属层的反应性金属的化合物和来自电介质材料的介电反应物元件,并且用Cu金属填充互连开口,其中扩散阻挡层围绕开口内的Cu金属。 反应性金属可以是Co,Ru,Mo,W或Ir,或它们的组合。 互连开口可以是沟槽,通孔或双镶嵌开口。

    Method for forming cobalt nitride cap layers
    8.
    发明授权
    Method for forming cobalt nitride cap layers 有权
    形成氮化钴盖层的方法

    公开(公告)号:US07846841B2

    公开(公告)日:2010-12-07

    申请号:US12242900

    申请日:2008-09-30

    IPC分类号: H01L21/44

    摘要: A method is provided for integrating cobalt nitride cap layers into manufacturing of semiconductor devices to improve electromigration and stress migration in copper (Cu) metal. One embodiment includes providing a patterned substrate containing a recessed feature formed in a low-k material and a first metallization layer at the bottom of the feature, forming a cobalt nitride cap layer on the first metallization layer, depositing a barrier layer in the recessed feature, including on the low-k dielectric material and on the first cobalt metal cap layer, and filling the recessed feature with Cu metal. Another embodiment includes providing a patterned substrate having a substantially planar surface with Cu paths and low-k dielectric regions, and selectively forming a cobalt nitride cap layer on the Cu paths relative to the low-k dielectric regions.

    摘要翻译: 提供了一种用于将氮化钴盖层整合到半导体器件的制造中以改善铜(Cu)金属中的电迁移和应力迁移的方法。 一个实施例包括提供包含形成在低k材料中的凹陷特征的图案化衬底和在特征底部的第一金属化层,在第一金属化层上形成氮化钴覆盖层,在凹陷特征中沉积阻挡层 包括在低k电介质材料和第一钴金属帽层上,并用Cu金属填充凹陷特征。 另一个实施例包括提供具有Cu路径和低k电介质区域的基本平坦表面的图案化衬底,以及相对于低k电介质区域在Cu路径上选择性地形成氮化钴覆盖层。

    Method for forming a ruthenium metal cap layer
    9.
    发明授权
    Method for forming a ruthenium metal cap layer 有权
    形成钌金属盖层的方法

    公开(公告)号:US07799681B2

    公开(公告)日:2010-09-21

    申请号:US12173814

    申请日:2008-07-15

    IPC分类号: H01L21/44

    摘要: A method for integrating ruthenium (Ru) metal cap layers and modified Ru metal cap layers into copper (Cu) metallization of semiconductor devices to improve electromigration (EM) and stress migration (SM) in bulk Cu metal. In one embodiment, the method includes providing a planarized patterned substrate containing a Cu metal surface and a dielectric layer surface, depositing first Ru metal on the Cu metal surface, and depositing additional Ru metal on the dielectric layer surface, where the amount of the additional Ru metal is less than the amount of the first Ru metal. The method further includes at least substantially removing the additional Ru metal from the dielectric layer surface to improve the selective formation of a Ru metal cap layer on the Cu metal surface. Other embodiments further include incorporating one or more types of modifier elements into the dielectric layer surface, the Cu metal surface, the Ru metal cap layer, or a combination thereof.

    摘要翻译: 将钌(Ru)金属盖层和改性的Ru金属覆盖层整合到半导体器件的铜(Cu)金属化中以改善块状Cu金属中的电迁移(EM)和应力迁移(SM)的方法。 在一个实施例中,该方法包括提供包含Cu金属表面和电介质层表面的平坦化图案化衬底,在Cu金属表面上沉积第一Ru金属,以及在电介质层表面上沉积额外的Ru金属,其中额外的量 Ru金属少于第一Ru金属的量。 该方法还包括从电介质层表面至少基本上去除额外的Ru金属,以改善在Cu金属表面上的Ru金属覆盖层的选择性形成。 其他实施例还包括将一种或多种类型的改性剂元素结合到电介质层表面,Cu金属表面,Ru金属覆盖层或其组合中。

    Method of forming a diffusion barrier and adhesion layer for an interconnect structure
    10.
    发明授权
    Method of forming a diffusion barrier and adhesion layer for an interconnect structure 有权
    形成用于互连结构的扩散阻挡层和粘附层的方法

    公开(公告)号:US07727883B2

    公开(公告)日:2010-06-01

    申请号:US12242384

    申请日:2008-09-30

    IPC分类号: H01L21/4763

    摘要: A method of forming an interconnect structure is provided. The method includes depositing a cobalt metal layer in an interconnect opening formed within a dielectric material containing a dielectric reactant element. The method further includes, in any order, thermally reacting at least a portion of the cobalt metal layer with at least a portion of the dielectric material to form a diffusion barrier containing a compound of the reactive metal from the cobalt metal layer and the dielectric reactant element from the dielectric material, and forming a cobalt nitride adhesion layer in the interconnect opening. The method further includes filling the interconnect opening with Cu metal, where the diffusion barrier and the cobalt nitride adhesion layer surround the Cu metal in the interconnect opening.

    摘要翻译: 提供一种形成互连结构的方法。 该方法包括在形成在包含介电反应物元件的电介质材料内的互连开口中沉积钴金属层。 该方法还包括以任何顺序使钴金属层的至少一部分与电介质材料的至少一部分热反应形成包含来自钴金属层和介电反应物的反应性金属化合物的扩散阻挡层 元件,并且在互连开口中形成氮化钴粘合层。 该方法还包括用Cu金属填充互连开口,其中扩散阻挡层和氮化钴粘合层围绕互连开口中的Cu金属。