Deposition of pure Cu films on glass substrates by decomposition of Cu complex pastes at 250 °C and additional Cu plating

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Abstract

Pure Cu film strongly adherent to glass substrates was deposited by printing Cu(COOH)2-containing paste and decomposing it at 250 °C in nitrogen atmosphere. The complete transformation of Cu(COOH)2 into Cu required 30 min and generated a low sheet resistance of 0.167 Ω/sq (volume resistivity: 15.0 μΩ·cm). Maximum adhesion between the Cu film and substrate was attained at the Cu complexes:α-terpineol mixing ratio of 6:4 by weight. The spike-shaped microstructure at the Cu/glass interface was determined to be the main cause for the outstanding adhesion properties. The resistance further decreased to 0.084 Ω/sq by increasing the thickness and modifying the surface of the Cu film via electroless Cu plating.

Original languageEnglish
Pages (from-to)359-365
Number of pages7
JournalApplied Surface Science
Volume473
DOIs
StatePublished - 15 Apr 2019

Keywords

  • Adhesion
  • Cu complex paste
  • Cu film
  • Decomposition
  • Glass substrate

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