Dear Arjun,

We have used step-by-step treatments in ultrasonic bath with acetone then isopropanol for 3 min, then washing distilled water and followed by oxidative treatment with boiling H2O2 and then dried. See please https://www.researchgate.net/publication/251880069_Tuning_of_the_charge_and_energy_transfer_in_the_ternary_CdSe_poly(3-methylthiophene)_poly(3-hexylthiophene)_nanocomposite_system?ev=prf_pub

Article Tuning of the charge and energy transfer in ternary CdSe/pol...

To reduce the hydrophobicity (or increase the hydrophilicity) of ITO surface using solutions only, sonicate 5 min in 10% NaOH (use hot water in your sonicator) the dip it in water then sonicate 5 more min in IPA. This reference can also help "Optimization of the Protonation Level of Polyaniline-Based Hole-Transport Layers in Bulk-Heterojunction Organic Solar Cells".

You may want to use some acids such as HCl, HNO3. They will oxidize glass surface so that it will not be hydrophobic anymore. Piranha solution can also be an option.

Ozkan, what do you mean by acids could you please tell us more. I know HCl will total remove the ITO layer

As Mohammed realized, acids or piranha solution can remove your ITO layer. I think it is better to play with your surface modification material or procedure. I guess sonication process described above will also remove your layer because hydrogen peroxide is used. So that's why it is better to modify your surface treatment if possible to get less hydrophobic surface. Btw thanks Mohammed for correcting me.

Thanks a lot for Your kind responses.