Abstract
We synthesized CdS Quantum dots (QDs) via the irradiation of a \(CdCl_{2^ + } \) mercaptopropionic acid (MPA) aqueous solution with a 10 MeV electron beam. Radiolytic synthesis using electron beam irradiation processes occurs in water that results in the formation of CdS QDs through the reactions mediated by hydrated electrons, e aq − . Photoluminescence (PL) measurements revealed that in the case of the MPA-rich condition (with an excess of MPA ions), we can reduced the emission intensity from surface defects at over 1/5 of the [CdCl2]/[MPA] molar concentration. The results of transmission electron microscopy (TEM) and UV-vis absorption spectroscopy revealed small particle sizes (2.1–4.7 nm) with good monodispersity.
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