Study of the substrate treatment effect on initial growth of indium tin-oxide films on polymer substrate using in situ conductance measurement

Younggun Han, Donghwan Kim, Jun Sik Cho, Young Whan Beag, Seuk Keun Koh

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9 Citations (Scopus)

Abstract

Changes in the initial growth mode of ion beam sputtered indium tin oxide (ITO) films on polycarbonate (PC) substrates were investigated by an in situ measurement of electrical conductance. The PC substrates were irradiated with l keV Ar ions in an oxygen environment (ion assisted reaction: IAR), prior to the film deposition for changing the surface energy. The electrical conduction modes in ITO films were discussed in terms of the film thickness and the surface energy of PC substrates. It was found that, in the initial part of the film growth, ITO nucleation density increased with the increase of the surface energy of PC. The change of the growth mode was discussed in both viewpoints of thermodynamics and atomic kinetics theories and verified by AFM (atomic force microscope) observations. Thermal stability of ITO films was investigated to observe the effect of the growth mode change by IAR pre-treatment of polymer substrate.

Original languageEnglish
Pages (from-to)58-63
Number of pages6
JournalThin Solid Films
Volume496
Issue number1
DOIs
Publication statusPublished - 2006 Feb 1

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Keywords

  • Electrical properties and measurement
  • Indium oxide
  • Indium tin oxide
  • Ion bombardment

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

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