Stability of fluorinated parylenes to oxygen reactive-ion etching under aluminum, aluminum oxide, and tantalum nitride overlayers

  • Jay J. Senkevich
  • , B. Wang
  • , J. B. Fortin
  • , M. C. Nielsen
  • , J. F. McDonald
  • , T. M. Lu
  • , G. M. Nuesca
  • , G. G. Peterson
  • , S. C. Selbrede
  • , M. T. Weise

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The fluorine stability of two parylenes, aliphatic-fluorinated AF-4 (α, α, α′, α′ poly(p-tetrafluoroxylylene) and aromatic-fluorinated VT-4 (2, 3, 5, 6 poly(p-tetrafluoroxylylene), were investigated underneath Al, Al2O3, and TaNX overlayers with and without exposure to oxygen reactive-ion etching (RIE). No fluorine diffusion was observed for Al films deposited onto the as-received parylenes. However, after oxygen RIE, x-ray photoelectron spectroscopy (XPS) depth profiling detected fluorine diffusion throughout Al and to a lesser extent Al2O3 but in contrast to Ta2.67N. Metal-fluoride bonding was evident at the metal/parylene interface for all the overlayers after the parylene was exposed to oxygen RIE and annealed.

Original languageEnglish (US)
Pages (from-to)925-931
Number of pages7
JournalJournal of Electronic Materials
Volume32
Issue number9
DOIs
StatePublished - Sep 2003

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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