Optical properties of zinc-iridium oxide thin films

Functional Materials and Nanotechnologies 2018

Skvortsova, V.^1 ; Zubkins, M.^1 ; Kalendarev, R.^1 ; Arslan, H.^1 ; Purans, J.^1

Institute of Solid State Physics, University of Latvia, Riga, Latvia^1

关键词: Iridium ions;    Iridium oxides;    Low-intensity;    Near Infrared;    Near infrared region;    Oxidation state;    Reactive DC magnetron sputtering;    Visible region;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/503/1/012016/pdf
DOI  :  10.1088/1757-899X/503/1/012016

来源: IOP

【 摘 要 】

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.