Fabrication of large area flexible transparent conducting electrodes (TCE) which find numerous opto-electronic applications using various industrially scalable low process cost methods such as rod coating, screen printing, roll to roll coating etc., which is crucial in the advances in opto-electronics. Emphasis will be on the scaling up as well as extension of crack lithography for the roll to roll large area TCEs as it offers possibilities of cost reduction without compromising the performance in direct industrial applications.