公开(公告)号：EP1941545A4

公开(公告)日：2011-03-30

申请号：EP06825349

申请日：2006-10-03

Applicant: IBM

Inventor： YANG CHIH-CHAO ,  GAUDET SIMON ,  LAVOIE CHRISTIAN ,  PONOTH SHOM ,  SPOONER TERRY A

IPC: H01L23/58 ,  H01L23/532

CPC classification number: H01L21/76843 ,  H01L21/76844 ,  H01L21/76846 ,  H01L21/76856 ,  H01L21/76873 ,  H01L23/53238 ,  H01L2221/1089 ,  H01L2924/0002 ,  H01L2924/00

公开(公告)号：WO2007044305A3

公开(公告)日：2007-12-13

申请号：PCT/US2006038475

申请日：2006-10-03

Applicant: IBM ,  YANG CHIH-CHAO ,  GAUDET SIMON ,  LAVOIE CHRISTIAN ,  PONOTH SHOM ,  SPOONER TERRY A

Inventor： YANG CHIH-CHAO ,  GAUDET SIMON ,  LAVOIE CHRISTIAN ,  PONOTH SHOM ,  SPOONER TERRY A

IPC: H01L23/58

CPC classification number: H01L21/76843 ,  H01L21/76844 ,  H01L21/76846 ,  H01L21/76856 ,  H01L21/76873 ,  H01L23/53238 ,  H01L2221/1089 ,  H01L2924/0002 ,  H01L2924/00

Abstract: An interconnect structure which includes a plating seed layer that has enhanced conductive material, preferably, Cu, diffusion properties is provided that eliminates the need for utilizing separate diffusion and seed layers. Specifically, the present invention provides an oxygen/nitrogen transition region within a plating seed layer for interconnect metal diffusion enhancement. The plating seed layer may include Ru, Ir or alloys thereof, and the interconnect conductive material may include Cu, Al, AlCu, W, Ag, Au and the like. Preferably, the interconnect conductive material is Cu or AlCu. In more specific terms, the present invention provides a single seeding layer which includes an oxygen/nitrogen transition region sandwiched between top and bottom seed regions. The presence of the oxygen/nitrogen transition region within the plating seed layer dramatically enhances the diffusion barrier resistance of the plating seed.

Abstract translation: 提供了一种互连结构，该互连结构包括具有增强的导电材料（优选Cu）扩散性质的镀敷种子层，其消除了使用单独的扩散层和种子层的需要。 具体而言，本发明提供用于互连金属扩散增强的镀敷种子层内的氧/氮过渡区。 电镀种子层可以包括Ru，Ir或其合金，互连导电材料可以包括Cu，Al，AlCu，W，Ag，Au等等。 优选地，互连导电材料是Cu或AlCu。 更具体地说，本发明提供了包括夹在顶部和底部种子区之间的氧/氮过渡区的单种晶层。 电镀种子层内氧/氮过渡区的存在显着增强了电镀种子的扩散阻挡性。