For the better performance of optoelectronic devices, highly transparent and conductive electrodes are essential. Furthermore, to be used as a wearable and flexible device, flexibility and low temperature fabrication process is also required. While ITO electrodes have low resistance and high optical transmittance; they involve high-temperature processes and are too brittle. Here, we design highly conductive, transparent, flexible and electromechanically stable electrodes using Ag nanoparticles, fabricated by all solution process at room temperature. For optical transparency enhancement, we used photolithography to create an Ag grid on a flexible PET film. In this research, we treated various ligand exchange to Ag grid and investigated the effect of post chemical treatment on their performance. With the optimal design of Ag grid, we obtained a very low sheet resistance (~18Ω/□) and high optical transmittance (~92%), with highest figure of merits.