Electrochromic Properties of Li+-Intercalated Amorphous Tungsten (aWO3-x) and Titanium (aTiO2-x) Oxide Thin Films

INERA Workshop: Transition Metal Oxide Thin Films-functional Layers in "Smart windows" and Water Splitting Devices

Triana, C.A.^1 ; Granqvist, C.G.^1 ; Niklasson, G.A.^1

Department of Engineering Sciences, Ångström Laboratory, Uppsala University, PO Box 534, Uppsala

SE-751 21, Sweden^1

关键词: Absorption phenomena;    Charge capacities;    Electrochromic properties;    Optical characterization;    Oxygen deficiency;    Oxygen deficient;    Stoichiometric films;    Transmittance measurements;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/559/1/012004/pdf
DOI  :  10.1088/1742-6596/559/1/012004

来源: IOP

【 摘 要 】

We report on electrochromic properties of stoichiometric and oxygen-deficient amorphous films, denoted aWO3-x and aTiO2-x, under Li+-ion-electron inter/deintercalation. Optical characterization of the films in their as-deposited, fully intercalated (dark), and bleached states were performed by in-situ optical transmittance measurements. We explore electrochromism and optical absorption phenomena in the context of oxygen deficiency and nanostructure. Studies by cyclic voltammetry suggest good optical modulation and charge capacity upon Li+-ion-electron inter/deintercalation for almost stoichiometric films.