Effects of cation compositions on the electronic properties and optical dispersion of indium zinc tin oxide thin films by electron spectroscopy

Research output: Contribution to journalJournal articleResearchpeer-review

738 Downloads (Pure)

Abstract

The electronic properties and optical dispersion of indium zinc tin oxide (IZTO) films with different cation compositions were investigated by reflection electron energy loss spectroscopy (REELS). The REELS spectra of IZTO films revealed that the band gap varied with different Sn/Zn ratios and In content. The optical properties were examined with REELS data using Tougaard-Yubero model and the results were compared with the envelope of the transmission spectra obtained using a UV-spectrometer. The dispersion behavior of the refractive index from REELS results was studied in terms of the single-oscillator Wemple-DiDomenico model. The results showed that the different compositions of In/Zn/Sn caused a change in the dispersion parameters of IZTO thin films in contrast to the static values of refractive indices and dielectric constant which remained the same. Our work demonstrated that REELS is an efficient tool to study the optical properties of a material by obtaining the optical parameters.

Original languageEnglish
JournalMaterials Research Bulletin
Volume62
Pages (from-to)222-231
Number of pages10
ISSN0025-5408
DOIs
Publication statusPublished - 2015

Keywords

  • A. Amorphous materials
  • B. Optical properties
  • B. Sputtering
  • C. Electron energy loss spectroscopy
  • D. Dielectric properties

Fingerprint

Dive into the research topics of 'Effects of cation compositions on the electronic properties and optical dispersion of indium zinc tin oxide thin films by electron spectroscopy'. Together they form a unique fingerprint.

Cite this