Easy, one-step synthesis of CdTe quantum dots via microwave irradiation for fingerprinting application

Abstract A novel one-step microwave irradiation method has been introduced to synthesize 3-mercaptopropionic acid capped CdTe QDs (Quantum dots). The synthesis process required no special conditions such as an inert nitrogen atmosphere but was carried out using TeO 2 (Tellurium oxide) as opposed to the Te powder, Na 2 TeO 3 or Al 2 TeO 3 usually used for the tellurium source. The characterization of the QDs revealed that they were 2–3 nm in size. The application of aqueous synthesis of capped CdTe QDs for latent fingerprinting was explored and fast turnaround times were achieved.