Optical properties of zinc-iridium oxide thin films
Date
2019
Authors
Skvorcova, Vera
Zubkins, Martins
Kalendarev, Roberts
Arslan, Halil
Purans, Juris
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Physics Publishing
Abstract
We present the results of an investigation of ultraviolet, visible, near-infrared (UV-Vis-NIR) and X-ray absorption spectroscopy absorption spectra for zinc-iridium oxide (Zn-Ir- O) thin films with various iridium concentrations deposited by reactive DC magnetron sputtering. It is found that the absorption spectra of zinc-iridium oxide thin films contain a broad band with maxima at 446 nm and 710 nm in the visible region, bands with maxima at about 1100 nm and 3300 nm, and a low-intensity absorption band at 1570 nm in the near-infrared region. The obtained absorption bands are associated with iridium ions at valences of Ir3+, Ir4+ and Ir5+. Changes in the oxidation state of iridium ions from 5+ to 4+ are observed.
Description
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Research Subject Categories::NATURAL SCIENCES:Physics