Epitaxial Integration of Multiple CdSe Quantum Dots in a Colloidal CdS Nanoplatele

Presynthesized CdSe/CdS core/shell quantum dots (QDs) are two-dimensionally (2D) and epitaxially fused insolution to form a CdS nanoplatelet with multiple epitaxially embedded CdSe QDs (CdSe@CdS coupled-dots@platelet). Inaddition to providing spatial confinement for the excitonic states of multiple CdSe QDs in a CdS nanoplatelet, the continuous andsingle-crystalline nanoplatelet with controlled thickness enables quantum coupling between the CdSe QDs, resulting ininhomogeneous-free optical properties for the colloidal CdSe@CdS coupled-dots@nanoplatelets with bright photoluminescence.The results here suggest that solution synthesis can offer a simple means to obtain semiconductor nanocrystals for realizing uniqueyet complex excitonic properties that are otherwise difficult to achieve

Automated summary

In this study, pre-synthesized CdSe/CdS core/shell quantum dots were fused together in solution to form CdS nanoplatelets with multiple embedded CdSe quantum dots. The resulting structure exhibited homogeneous-free optical properties and demonstrated unique and complex excitonic characteristics.