Electrochromic performance of reactive plasma-sputtered NiOx thin films on flexible PET/ITO substrates for flexible electrochromic devices

Electrochromic properties of NiOx (nickel oxide) thin films sputtered on 40I[copy/a-! flexible PET (polyethylene terephthalate)/ITO (indium tin oxide) substrates were investigated. Metallic Ni target, sputtered by radio frequency (r.f.) power with argon gases and reacted with oxygen gases at room te...

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Bibliographic Details
Published in:Surface & coatings technology 2010-12, Vol.205, p.S216-S221
Main Authors: LIN, Yung-Sen, CHEN, Po-Wen, LIN, Di-Jiun, CHUANG, Pei-Ying, TSAI, Tsung-Hsien, SHIAH, Yui-Chuin, YU, Yueh-Chung
Format: Article
Language:English
Subjects:
Applied sciences
Cross-disciplinary physics: materials science
rheology
Devices
Driving
Electric potential
Electrochromism
Exact sciences and technology
Indium tin oxide
Intercalation
Materials science
Metals. Metallurgy
Methods of deposition of films and coatings
film growth and epitaxy
Nickel
Physics
Polyethylene terephthalates
Production techniques
Surface treatment
Surface treatments
Thin films
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Summary:Electrochromic properties of NiOx (nickel oxide) thin films sputtered on 40I[copy/a-! flexible PET (polyethylene terephthalate)/ITO (indium tin oxide) substrates were investigated. Metallic Ni target, sputtered by radio frequency (r.f.) power with argon gases and reacted with oxygen gases at room temperature (23A degree C), was proven to provide significant electrochromic properties. Cyclic voltammetry switching measurements found that only low driving voltages from a degree 0.6V to 1V were needed to provide reversible Li+ ion intercalation and deintercalation. Light modulation with up to 40% of transmittance variation, optical density change of 0.354 and color efficiency of 67cm2/C at a wavelength of 550nm were obtained for 1100 cycles of Li+ intercalation and deintercalation in a 1M LiClO4-PC (propylene carbonate) electrolyte.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2010.07.088