Why use more than one ligand (e.g. a combination of oleic acid and oleylamine) to passivate the surface of colloidal perovskite quantum dot?

I have read that ligands are needed to stabilise perovskite quantum dots through passivation of their surface defects and trapping sites. People generally use oleic acid and oleylamine, I am not...

26 October 2017 4,661 4 View