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Electrochromism of nitrogen-doped tungsten oxide thin films

Latest updated: May 29, 2020

DOI: https://doi.org/10.1016/j.matpr.2020.01.332

Authors: Gamze Atak, İlknur Bayrak Pehlivan, José Montero, Daniel Primetzhofer, Claes G.Granqvist, Gunnar A.Niklassonb – Materials Today



Tungsten-oxide-based thin films were prepared by reactive DC magnetron sputtering in the presence of oxygen and nitrogen. Nitrogen contents up to 12 at.% were documented by Rutherford backscattering spectrometry and time-of-flight elastic recoil detection analysis. Optical and electrochemical measurements showed that films with up to 4 at.% of nitrogen were as transparent as undoped tungsten oxide films and displayed enhanced electrochromic properties manifested in an increase in the coloration efficiency by as much as 20%.


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