SEMICONDUCTOR INTERCONNECT STRUCTURE HAVING ENHANCED PERFORMANCE AND RELIABILITY
    1.
    发明申请
    SEMICONDUCTOR INTERCONNECT STRUCTURE HAVING ENHANCED PERFORMANCE AND RELIABILITY 有权
    具有增强性能和可靠性的半导体互连结构

    公开(公告)号:US20130075908A1

    公开(公告)日:2013-03-28

    申请号:US13246904

    申请日:2011-09-28

    IPC分类号: H01L23/482 H01L21/768

    摘要: An interconnect structure and method for fabricating the interconnect structure having enhanced performance and reliability, by minimizing oxygen intrusion into a seed layer and an electroplated copper layer of the interconnect structure, are disclosed. At least one opening in a dielectric layer is formed. A sacrificial oxidation layer disposed on the dielectric layer is formed. The sacrificial oxidation layer minimizes oxygen intrusion into the seed layer and the electroplated copper layer of the interconnect structure. A barrier metal layer disposed on the sacrificial oxidation layer is formed. A seed layer disposed on the barrier metal layer is formed. An electroplated copper layer disposed on the seed layer is formed. A planarized surface is formed, wherein a portion of the sacrificial oxidation layer, the barrier metal layer, the seed layer, and the electroplated copper layer are removed. In addition, a capping layer disposed on the planarized surface is formed.

    摘要翻译: 公开了一种用于制造具有增强的性能和可靠性的互连结构的互连结构和方法,通过最小化氧侵入种子层和互连结构的电镀铜层。 形成电介质层中的至少一个开口。 形成设置在电介质层上的牺牲氧化层。 牺牲氧化层使氧侵入种子层和互连结构的电镀铜层最小化。 形成设置在牺牲氧化层上的阻挡金属层。 形成设置在阻挡金属层上的籽晶层。 形成设置在种子层上的电镀铜层。 形成平坦化表面,其中除去部分牺牲氧化层,阻挡金属层,种子层和电镀铜层。 此外,形成设置在平坦化表面上的覆盖层。

    Implantless Dopant Segregation for Silicide Contacts
    7.
    发明申请
    Implantless Dopant Segregation for Silicide Contacts 有权
    用于硅胶接触的无植入物掺杂剂分离

    公开(公告)号:US20120009771A1

    公开(公告)日:2012-01-12

    申请号:US12833272

    申请日:2010-07-09

    IPC分类号: H01L21/3205

    摘要: A method for formation of a segregated interfacial dopant layer at a junction between a semiconductor material and a silicide layer includes depositing a doped metal layer over the semiconductor material; annealing the doped metal layer and the semiconductor material, wherein the anneal causes a portion of the doped metal layer and a portion of the semiconductor material to react to form the silicide layer on the semiconductor material, and wherein the anneal further causes the segregated interfacial dopant layer to form between the semiconductor material and the silicide layer, the segregated interfacial dopant layer comprising dopants from the doped metal layer; and removing an unreacted portion of the doped metal layer from the silicide layer.

    摘要翻译: 在半导体材料和硅化物层之间的结处形成分离的界面掺杂剂层的方法包括在半导体材料上沉积掺杂的金属层; 退火所述掺杂金属层和所述半导体材料,其中所述退火使所述掺杂金属层的一部分和所述半导体材料的一部分反应以在所述半导体材料上形成所述硅化物层,并且其中所述退火还导致所述分离的界面掺杂剂 层,以形成在半导体材料和硅化物层之间,分离的界面掺杂剂层包含来自掺杂金属层的掺杂剂; 以及从所述硅化物层去除所述掺杂金属层的未反应部分。

    Microstructure modification in copper interconnect structure
    8.
    发明授权
    Microstructure modification in copper interconnect structure 失效
    铜互连结构中的微结构改性

    公开(公告)号:US08008199B2

    公开(公告)日:2011-08-30

    申请号:US12869113

    申请日:2010-08-26

    IPC分类号: H01L21/44 H01L21/4763

    摘要: Cobalt is added to a copper seed layer, a copper plating layer, or a copper capping layer in order to modify the microstructure of copper lines and vias. The cobalt can be in the form of a copper-cobalt alloy or as a very thin cobalt layer. The grain boundaries configured in bamboo microstructure in the inventive metal interconnect structure shut down copper grain boundary diffusion. The composition of the metal interconnect structure after grain growth contains from about 1 ppm to about 10% of cobalt in atomic concentration. Grain boundaries extend from a top surface of a copper-cobalt alloy line to a bottom surface of the copper-cobalt alloy line, and are separated from any other grain boundary by a distance greater than a width of the copper-cobalt alloy line.

    摘要翻译: 为了改变铜线和通孔的微观结构,将钴添加到铜种子层,铜镀层或铜覆盖层。 钴可以是铜 - 钴合金的形式或作为非常薄的钴层。 本发明金属互连结构中竹结构中晶界的结构关闭了铜晶界扩散。 晶粒生长后的金属互连结构的组成含有约1ppm至约10原子浓度的钴。 晶粒边界从铜 - 钴合金线的顶表面延伸到铜 - 钴合金线的底表面,并且与任何其它晶界分开大于铜 - 钴合金线的宽度的距离。

    MICROSTRUCTURE MODIFICATION IN COPPER INTERCONNECT STRUCTURE
    9.
    发明申请
    MICROSTRUCTURE MODIFICATION IN COPPER INTERCONNECT STRUCTURE 失效
    铜互连结构中的微观结构修改

    公开(公告)号:US20100323517A1

    公开(公告)日:2010-12-23

    申请号:US12869113

    申请日:2010-08-26

    IPC分类号: H01L21/768

    摘要: Cobalt is added to a copper seed layer, a copper plating layer, or a copper capping layer in order to modify the microstructure of copper lines and vias. The cobalt can be in the form of a copper-cobalt alloy or as a very thin cobalt layer. The grain boundaries configured in bamboo microstructure in the inventive metal interconnect structure shut down copper grain boundary diffusion. The composition of the metal interconnect structure after grain growth contains from about 1 ppm to about 10% of cobalt in atomic concentration. Grain boundaries extend from a top surface of a copper-cobalt alloy line to a bottom surface of the copper-cobalt alloy line, and are separated from any other grain boundary by a distance greater than a width of the copper-cobalt alloy line.

    摘要翻译: 为了改变铜线和通孔的微观结构,将钴添加到铜种子层,铜镀层或铜覆盖层。 钴可以是铜 - 钴合金的形式或作为非常薄的钴层。 本发明金属互连结构中竹结构中晶界的结构关闭了铜晶界扩散。 晶粒生长后的金属互连结构的组成含有约1ppm至约10原子浓度的钴。 晶粒边界从铜 - 钴合金线的顶表面延伸到铜 - 钴合金线的底表面,并且与任何其它晶界分开大于铜 - 钴合金线的宽度的距离。

    Microstructure modification in copper interconnect structure
    10.
    发明授权
    Microstructure modification in copper interconnect structure 有权
    铜互连结构中的微结构改性

    公开(公告)号:US07843063B2

    公开(公告)日:2010-11-30

    申请号:US12031103

    申请日:2008-02-14

    IPC分类号: H01L23/48 H01L23/52 H01L29/40

    摘要: Cobalt is added to a copper seed layer, a copper plating layer, or a copper capping layer in order to modify the microstructure of copper lines and vias. The cobalt can be in the form of a copper-cobalt alloy or as a very thin cobalt layer. The grain boundaries configured in bamboo microstructure in the inventive metal interconnect structure shut down copper grain boundary diffusion. The composition of the metal interconnect structure after grain growth contains from about 1 ppm to about 10% of cobalt in atomic concentration. Grain boundaries extend from a top surface of a copper-cobalt alloy line to a bottom surface of the copper-cobalt alloy line, and are separated from any other grain boundary by a distance greater than a width of the copper-cobalt alloy line.

    摘要翻译: 为了改变铜线和通孔的微观结构,将钴添加到铜种子层,铜镀层或铜覆盖层。 钴可以是铜 - 钴合金的形式或作为非常薄的钴层。 本发明金属互连结构中竹结构中晶界的结构关闭了铜晶界扩散。 晶粒生长后的金属互连结构的组成含有约1ppm至约10原子浓度的钴。 晶粒边界从铜 - 钴合金线的顶表面延伸到铜 - 钴合金线的底表面,并且与任何其它晶界分开大于铜 - 钴合金线的宽度的距离。