Improvement of adhesion between plastic substrates and antireflection layers by ion-assisted reaction

Jung Hwan Lee, Jun S. Cho, Seok Keun Koh, Donghwan Kim

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Enhanced adhesion was observed between antireflection (AR) layers and polycarbonate (PC) substrates by irradiating the substrates with low-energy Ar ions in an O2 environment. The AR coating consisted of SiO 2/TiO2 multi-layers that were deposited by ion-beam sputtering. Improved adhesion was evidenced by a peeling test. Ion irradiation caused the surface characteristics to become more hydrophilic as measured by the water contact angle, which decreased from 76° to 18° after the ion irradiation. X-ray photoelectron spectroscopy analysis showed that the concentration of hydrophilic groups such as C=O and C-O increased as a result of the ion irradiation. The changes in surface roughness and in optical transmittance were negligible. The optical reflectance of the AR/PC structure was below 1% in the visible range.

Original languageEnglish
Pages (from-to)147-151
Number of pages5
JournalThin Solid Films
Volume449
Issue number1-2
DOIs
Publication statusPublished - 2004 Feb 2

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Keywords

  • Adhesion
  • Antireflection
  • Ion beam
  • Ion-assisted reaction
  • Polycarbonate

ASJC Scopus subject areas

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

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