Conductive compound cap layer
    1.
    发明申请
    Conductive compound cap layer 审中-公开
    导电复合盖层

    公开(公告)号:US20060001170A1

    公开(公告)日:2006-01-05

    申请号:US10882855

    申请日:2004-07-01

    IPC分类号: H01L29/40 H01L21/44

    摘要: An interconnect structure and method thereof comprising: a interconnect and a compound cap layer. The interconnect has a compound cap layer thereover. The interconnect is preferably comprised of copper. The compound cap layer is preferably comprised of a copper-metal (Cu-Me) compound or a metal; and is more preferably comprised of a Cu—Sn compound or Ni metal. A dielectric cap layer is formed over the compound cap layer. The compound cap layer can provide a barrier capping effect to the Cu to minimize the out-diffusion of Cu and therefore improve the electro-migration performance of Cu. The compound cap layer has excellent adhesion to dielectric cap layers, especially SiN and SiC dielectric cap layers.

    摘要翻译: 一种互连结构及其方法,包括:互连和复合覆盖层。 互连在其上具有复合盖层。 互连优选地由铜组成。 化合物盖层优选由铜 - 金属(Cu-Me)化合物或金属组成; 更优选由Cu-Sn化合物或Ni金属构成。 在复合盖层之上形成电介质盖层。 复合盖层可以提供Cu的阻挡封盖作用以最小化Cu的扩散,从而提高Cu的电迁移性能。 复合覆盖层对电介质盖层,特别是SiN和SiC介电盖层具有优异的粘合性。

    Combined copper plating method to improve gap fill
    7.
    发明申请
    Combined copper plating method to improve gap fill 有权
    组合镀铜方法提高间隙填充

    公开(公告)号:US20070293039A1

    公开(公告)日:2007-12-20

    申请号:US11454397

    申请日:2006-06-16

    IPC分类号: H01L21/4763 H01L21/44

    摘要: A method of filling gaps in dielectric layers is disclosed. A wafer is provided having a dielectric layer containing gaps to be filled with copper, some of the gaps, denoted deeper gaps, having aspect ratios so large that filling these gaps with copper using ECP could result in pinhole like voids. A blanket conformal metal barrier layer is formed and the wafer is then submerged in a solution to electroless plate a blanket conformal copper seed layer. A partial filling of deeper gaps with copper reduces the effective aspect ratios of the deeper gaps to the extent that ECP could be used to complete the copper filling of the gaps without forming pinhole like voids. ECP is then used to complete the copper filling of the gaps. The wafer is annealed and CMP performed to planarize the surface, giving rise to a structure in which the gaps are filled with copper and are separated by the dielectric layer.

    摘要翻译: 公开了一种在电介质层中填充间隙的方法。 提供具有包含要填充铜的间隙的电介质层的晶片,其中一些间隙表示为更深的间隙,其纵横比大到使用ECP填充这些间隙的铜可导致针孔状空隙。 形成覆盖的共形金属阻挡层,然后将晶片浸没在无电镀平板上的覆盖层保形铜种子层的溶液中。 用铜部分填充更深的间隙可以减少较深间隙的有效纵横比,使得ECP可以用于完成间隙的铜填充而不形成针孔如空隙的程度。 然后使用ECP来完成间隙的铜填充。 对晶片进行退火并进行CMP以平坦化表面,产生其中间隙被铜填充并由介电层分离的结构。

    Grain boundary blocking for stress migration and electromigration improvement in CU interconnects
    10.
    发明授权
    Grain boundary blocking for stress migration and electromigration improvement in CU interconnects 有权
    用于CU互连中的应力迁移和电迁移改进的谷物边界阻塞

    公开(公告)号:US07989338B2

    公开(公告)日:2011-08-02

    申请号:US11153747

    申请日:2005-06-15

    IPC分类号: H01L21/4763

    摘要: Example embodiments of a structure and method for forming a copper interconnect having a doped region near a top surface. The doped region has implanted alloying elements that block grain boundaries and reduce stress and electro migration. In a first example embodiment, the barrier layer is left over the inter metal dielectric layer during the alloying element implant. The barrier layer is later removed with a planarization process. In a second example embodiment the barrier layer is removed before the alloying element implant and a hard mask blocks the alloying element from being implanted in the inter metal dielectric layer.

    摘要翻译: 用于形成具有在顶表面附近的掺杂区域的铜互连的结构和方法的示例实施例。 掺杂区域已经植入了阻挡晶界并减少应力和电迁移的合金元素。 在第一示例性实施例中,在合金元素植入期间,阻挡层留在金属间介电层上。 稍后通过平坦化处理去除阻挡层。 在第二示例性实施例中,在合金元素注入之前去除阻挡层,并且硬掩模阻止合金元素被注入在金属间介电层中。