Improved electrochromic performances of NiO based thin films by lithium addition: From single layers to devices

Hakim Moulki, Dae Hoon Park, Bong Ki Min, Hansang Kwon, Seong Ju Hwang, Jin Ho Choy, Thierry Toupance, Guy Campet, Aline Rougier

Research output: Contribution to journalArticle

69 Citations (Scopus)

Abstract

Aiming at enhancing the electrochromic properties of anodically colored NiO thin films, lithium doped NiO thin films were grown on FTO/glass substrates, by the pulsed laser deposition (PLD) method. Optimized conditions, namely a room temperature substrate under 10 Pa oxygen pressure were used. Comparison with undoped NiO thin films indicates that lithium doping deteriorates NiO cubic phase (1 1 1) preferred orientation and also induces lattice disorder. The investigation of the electrochromic properties of Li-Ni-O thin films in aqueous liquid electrolyte, 1 M KOH, on the one hand and in hydrophobic lithium conductive ionic liquid, 0.3 M LiTFSI in BMITFSI, on the other hand, demonstrates an improvement in the electrochromic performances with lithium doping. Finally, electrochromic devices built on the association of WO 3 and Li-Ni-O thin films and using the above quoted ionic liquid blended with PMMA as electrolyte are reported. Good electrochromic performances and neutral color are shown.

Original languageEnglish
Pages (from-to)46-52
Number of pages7
JournalElectrochimica Acta
Volume74
DOIs
Publication statusPublished - 2012 Jul 15

Fingerprint

Lithium
Thin films
Ionic Liquids
Ionic liquids
Electrolytes
Doping (additives)
Electrochromic devices
Polymethyl Methacrylate
Substrates
Pulsed laser deposition
Oxygen
Color
Glass
Liquids
Temperature

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Electrochemistry

Cite this

Moulki, Hakim ; Park, Dae Hoon ; Min, Bong Ki ; Kwon, Hansang ; Hwang, Seong Ju ; Choy, Jin Ho ; Toupance, Thierry ; Campet, Guy ; Rougier, Aline. / Improved electrochromic performances of NiO based thin films by lithium addition : From single layers to devices. In: Electrochimica Acta. 2012 ; Vol. 74. pp. 46-52.
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Improved electrochromic performances of NiO based thin films by lithium addition : From single layers to devices. / Moulki, Hakim; Park, Dae Hoon; Min, Bong Ki; Kwon, Hansang; Hwang, Seong Ju; Choy, Jin Ho; Toupance, Thierry; Campet, Guy; Rougier, Aline.

In: Electrochimica Acta, Vol. 74, 15.07.2012, p. 46-52.

Research output: Contribution to journalArticle

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AU - Moulki, Hakim

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AU - Kwon, Hansang

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AU - Choy, Jin Ho

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AU - Campet, Guy

AU - Rougier, Aline

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