A method of manufacturing a quantum dot includes forming a core including silver (Ag) and indium (In), purifying the core with a surface treatment solution including gallium (Ga) and forming a shell around (e.g., surrounding) the core by reacting a first precursor including gallium (Ga) with the core.

A light emitting element according to an embodiment includes a first electrode, a second electrode overlapping the first electrode, an emission layer disposed between the first electrode and the second electrode, and an electron transport region disposed between the emission layer and the second electrode, wherein the electron transport region includes a thermal acid generator (TAG). A method of manufacturing a light emitting element is also provided.