One‐Pot Synthesis of Dual‐Stabilizer‐Capped CdTe Nanocrystals with Efficient Near‐Infrared Photoluminescence and Electrochemiluminescence

CdTe nanocrystals (NCs) are promising near‐infrared (NIR) emitter candidates. A one‐pot synthetic strategy has been developed for high‐quality NIR‐emitting CdTe NCs with mercaptopropionic acid and sodium hexametaphosphate as dual stabilizers. The dual‐stabilizer‐capped CdTe NCs displayed efficient photoluminescence (PL) between the visible and near‐infrared region (533–778 nm) with a quantum yield of up to 47 %. XRD, XPS, and photoluminescence spectra were employed to characterize the structure and optical features of these samples. Moreover, the NIR‐emitting CdTe NCs also displayed strong band‐gap electrochemiluminescence in the NIR region, indicating that this strategy can be used to synthesize NCs with both efficient fluorescence and electrochemiluminescence emissions in the NIR region.