Herein, NiO based thin films were fabricated by sol-gel method combined with spin coating technique onto ITO/Glass substrate. The influence of molarity, solvents, stabilizing and the nature of the final treatment on the structural, morphological, electrical and optical properties of NiO based thin films was studied and correlated to their EC behavior. Overall films are poorly crystallized. The films synthesized by methanol as solvent, triton 100X as stabilizer and treated by UV light thin film exhibit the highest capacity in KOH based electrolyte and the highest optical contrast. Lithium addition was investigated for improved p-type conductivity. Finally, the integration of sol-gel NiO thin films in full devices (WO3/Li-based electrolyte/NiO) will be discussed.
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