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

Electrochromic properties of NiO x (nickel oxide) thin films sputtered on 40 Ω/□ 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 tempera...

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Bibliographic Details
Published inSurface & coatings technology Vol. 205; pp. 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 Journal Article
LanguageEnglish
Published Elsevier B.V 2010
Subjects
Cyclic voltammetry
Electrochromism
Flexible substrate
Nickel oxide
Sputter
Cyclic voltammetry
Flexible substrate
Electrochromism
Sputter
Nickel oxide
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Summary:Electrochromic properties of NiO x (nickel oxide) thin films sputtered on 40 Ω/□ 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 (23 °C), was proven to provide significant electrochromic properties. Cyclic voltammetry switching measurements found that only low driving voltages from −0.6 V to 1 V 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 67 cm 2/C at a wavelength of 550 nm were obtained for 1100 cycles of Li + intercalation and deintercalation in a 1 M LiClO 4-PC (propylene carbonate) electrolyte.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2010.07.088