Optical band gap studies on Cu-doped Zinc-Borate glassy thin films

KILIÇ G., PAT S., BALBAĞ M. Z., TEMEL S., KORKMAZ Ş., Ekem N.

Optoelectronics and Advanced Materials, Rapid Communications, vol.4, no.11, pp.1705-1708, 2010 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 4 Issue: 11
  • Publication Date: 2010
  • Journal Name: Optoelectronics and Advanced Materials, Rapid Communications
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1705-1708
  • Keywords: Borate, Glass, Semiconductors, Thin film, Vanadium
  • Bilecik Şeyh Edebali University Affiliated: Yes

Abstract

In this study, optical properties of Cu-doped Zinc-Borate glassy thin films (GTFZs) were investigated. The glassy thin films of bulk glasses were grown onto SiO2 substrates with argon gas plasma under vacuum with RF sputtering technique. As a result of XRD analysis of obtained glassy thin films, they are observed to have amorphous structure. From absorbance and transmission data obtained from Uv-Vis spectra of thin films, optical band gaps for direct and indirect transitions and also Urbach energies were calculated. Not only the fundamental absorption edge and cut-off wavelength shift towards red with the increase in V2O5 content, but also ZnO narrows the optical band gaps.