UV treatment for enhanced electrochromic properties of spin coated NiO thin films

Khawla Zrikem (1, 2) , Giljoo Song (1) , A. Aït Aghzzaf (2) , M.'Barek Amjoud (2) , Daoud Mezzane (2) , Aline Rougier (1)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
2 LMCN - Laboratoire de Matière Condensée et Nanostructures

Nickel oxide thin films were deposited by sol-gel combined with spin coating method. Herein, the influence of the concentration of the precursor, kind of solvents, stabilizers and type of final treatment (calcination or UV treatment) on the structural, morphological, and electrochromic properties of NiO thin films is reported. Enhanced electrochromic properties, corresponding to a modulation of the optical transmittance upon an applied voltage, are established for NiO thin films prepared with methanol as solvent, Triton X-100 as stabilizer and treated by UV using a lamp with low power of 30 W for 5 h. These findings highlight the benefit of using UV treatment, as replacement of annealing step for enhanced NiO electrochromic properties.

Mots clés: NiO thin films; Sol-gel; UV treatment; Electrochromic properties

Domaines: Matériaux

Khawla Zrikem, Giljoo Song, A. Aït Aghzzaf, M.'Barek Amjoud, Daoud Mezzane, et al.. UV treatment for enhanced electrochromic properties of spin coated NiO thin films. Superlattices and Microstructures, 2019, 127, pp.35-42. ⟨10.1016/j.spmi.2018.03.042⟩. ⟨hal-02057818⟩