• DocumentCode
    2373389
  • Title

    Step coverage evaluation of copper films prepared by magnetron sputtering

  • Author

    Park, Y.H. ; Chung, A.H. ; Ward, M.A.

  • Author_Institution
    Process Lab., ULVAC North America Corp., Fremont, CA, USA
  • fYear
    1991
  • fDate
    11-12 Jun 1991
  • Firstpage
    295
  • Lastpage
    297
  • Abstract
    Sputtered copper was investigated with emphasis on step coverage over difficult 1 μm via holes with aspect ratio of unity. The bottom filling in the hole was greater with Cu when compared with aluminum. Cu sidewall coverage was continuous without voids. Results are discussed in terms of the angular distribution of sputtered Cu and Al and relative mass to argon. Other physical properties of Cu are presented
  • Keywords
    VLSI; copper; metallisation; sputter deposition; sputtered coatings; 1 micron; Cu sidewall coverage; Cu sputtered films; VLSI; angular distribution of sputtered Cu; aspect ratio; bottom filling; conformal films; magnetron sputtering; multilevel interconnection; physical properties; reliability issues; step coverage; via holes; Aluminum; Argon; Artificial intelligence; Conductivity; Copper; Filling; Inorganic materials; Metallization; Sputtering; X-ray scattering;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    VLSI Multilevel Interconnection Conference, 1991, Proceedings., Eighth International IEEE
  • Conference_Location
    Santa Clara, CA
  • Print_ISBN
    0-87942-673-X
  • Type

    conf

  • DOI
    10.1109/VMIC.1991.153004
  • Filename
    153004