ANTIREFLECTIVE COATING ON POLYETHYLENE TEREPHTHALATE BY THERMIONIC VACUUM ARC

PAT S., Ozmumcu M., Ekem N., Ozkan M., KORKMAZ Ş., BALBAĞ M. Z.

JOURNAL OF PLASTIC FILM & SHEETING, vol.26, no.3, pp.259-270, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 26 Issue: 3
  • Publication Date: 2010
  • Doi Number: 10.1177/8756087910392082
  • Journal Name: JOURNAL OF PLASTIC FILM & SHEETING
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.259-270
  • Keywords: plasma, TVA, AR, coated PET, THIN-FILM DEPOSITION, METAL
  • Eskisehir Osmangazi University Affiliated: Yes

Abstract

Transparent polyethylene terephthalate (PET) substrates were coated with SiO2 and ZrO2 using thermionic vacuum arc (TVA) method for the first time. The melting point of PET is approximately 260 degrees C. Transmittances, thickness, reflectance, and refractive indices of coated PET samples were measured by ultraviolet-visible spectrophotometer and interferometry to characterize their optical properties. Additionally, scanning electron microscopy, energy dispersive X-ray spectroscopy, and atomic force microscopy were used to characterize the coated PET surface morphologies. Our results show that the SiO2-and ZrO2-coated PET samples had lower reflection when the TVA method was used; so, they show antireflective (AR) properties. Moreover, the coating homogeneity and surface roughness are proper for multi-layer AR coatings.