“…A number of techniques are being used for the fabrication of ZnO thin films namely spray pyrolysis, sol-gel, drop-casting, chemical bath deposition, pulsed laser ablation, sputtering, etc. [11,[20][21][22][23]. Among them, sol-gel dip coating is one of the most versatile, economic and dominant techniques that offer excellent compositional control, better homogeneity, and lower crystallization temperature together with large area deposition of thin films [11,24].…”