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

Title
Improved electrochromic performances of NiO based thin films by lithium addition: From single layers to devices
Authors
Moulki H.Park D.H.Min B.-K.Kwon H.Hwang S.-J.Choy J.-H.Toupance T.Campet G.Rougier A.
Ewha Authors
최진호황성주
SCOPUS Author ID
최진호scopus; 황성주scopus
Issue Date
2012
Journal Title
Electrochimica Acta
ISSN
0013-4686JCR Link
Citation
vol. 74, pp. 46 - 52
Indexed
SCI; SCIE; SCOPUS WOS 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. © 2012 Elsevier Ltd.
DOI
10.1016/j.electacta.2012.03.123
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자연과학대학 > 화학·나노과학전공 > Journal papers
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