• 专利标题:   Method for forming interconnect structure for integrated microelectronic circuit, involves transferring graphene from copper foil, and patterning graphene, so that edges are coincided with vertical sidewall surfaces of copper structure.
  • 专利号:   US2013302978-A1, US8623761-B2
  • 发明人:   BONILLA G, DIMITRAKOPOULOS C D, GRILL A, HANNON J B, LIN Q, NEUMAYER D A, OIDA S, OTT J A, PFEIFFER D
  • 专利权人:   INT BUSINESS MACHINES CORP
  • 国际专利分类:   H01L021/768, H01L021/44
  • 专利详细信息:   US2013302978-A1 14 Nov 2013 H01L-021/768 201377 Pages: 13 English
  • 申请详细信息:   US2013302978-A1 US605763 06 Sep 2012
  • 优先权号:   US468693, US605763

▎ 摘  要

NOVELTY - The method involves providing a copper structure (28') contained within opening present in a dielectric material (12). The copper structure is provided with an uppermost surface that is coplanar with an uppermost surface of the material. The graphene cap (24') is located at the uppermost surface of structure. The graphene cap is provided with edges that are vertically coincident with edges of the copper structure. The graphene is transferred from the copper foil, and the graphene is patterned, so that the edges are coincided with vertical sidewall surfaces of the copper structure. USE - Method for forming interconnect structure for integrated microelectronic circuit. ADVANTAGE - The electro-migration (EM) resistance can be improved. The electrical resistivity of the copper can be improved. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view illustrating the structure for forming dielectric material portion adjacent to the graphene-capped copper structure. Substrate (10) Dielectric material (12) Diffusion barrier materials (18',20') Graphene cap (24') Copper structure (28')