The distribution of Cu and resultant resistivity change in sputter deposited Al-Cu film as a conductive layer

  • D. H. Lee
  • , D. M. Jeon
  • , S. Y. Yoon
  • , J. P. Lee
  • , B. G. Kim
  • , S. J. Suh

Research output: Contribution to journalConference articlepeer-review

6 Scopus citations

Abstract

As a conductive layer, sputter-deposited Al-Cu 1 at.% thin film was investigated, with particular focus on the effect of Cu precipitates and film strain on the electric conductivity. The 400-nm-thick film was deposited on Si wafer and heat-treated at 200 and 480 °C. Cu precipitation was investigated using electron microscopy and film strain using XRD. As a result of heat treatment, changes in the electric resistivity showed the same trend as the film strain. This study concluded that the trends in resistivity and film stress could be related to Cu precipitation to some extent. In other words, the resistivity changes depending on whether the precipitates are coherent with the Al matrix and on the distribution of the precipitates.

Original languageEnglish
Pages (from-to)170-173
Number of pages4
JournalThin Solid Films
Volume435
Issue number1-2
DOIs
StatePublished - 1 Jul 2003
EventProccedings of the Joint International Plasma Symposium - Jeju Island, Korea, Republic of
Duration: 1 Jul 20024 Jul 2002

Keywords

  • Metallization
  • Precipitation
  • Resistivity
  • Strain

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