Ligand effect on the synthesis of emission-tunable near-infrared Ag2S quantum dots

The ligand effect on the formation of Ag₂S QDs was investigated, and it was found that the mixed oleic acid and 1-octanethiol ligand made the synthesis of small Ag₂S QDs more controllable. By modulating the ligand composition and growth time, the emission of Ag₂S QDs could be tuned from 665 to 845 nm.