Abstract: In a method of forming a layer, a precursor composition including a metal and a ligand chelating to the metal is stabilized by contacting the precursor composition with an electron donating compound to provide a stabilized precursor composition onto a substrate. A reactant is introduced onto the substrate to bind to the metal in the stabilized precursor composition. The stabilized precursor composition is provided onto the substrate by introducing the precursor composition onto the substrate after the electron donating compound is introduced onto the substrate. The electron donating compound is continuously introduced onto the substrate during and after the precursor composition is introduced.