2010/11/23 by José Planelles‐Aragó, José Planelles-Aragó, Eloísa Cordoncillo +4 · 1 citation
Engineering · Materials Science · #Chalcogenide Semiconductor Thin Films #Nanocluster Synthesis and Applications #Quantum Dots Synthesis And Properties
paper · doi:10.1039/c0jm03188g
openalex publication_date 2010/11/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
Eu3+-Doped CdS hexagonal nanocrystals (NCs), with an average size of ∼4 nm, have been prepared through a simple methodology based on the direct precipitation of CdS NCs using 1-thioglycerol as a capping molecule. Steady-state and time-resolved photoluminescence studies (14–300 K) reveal an effective CdS NCs-to-Eu3+ energy transfer process involving surface localized states and mediated by a thermally activated exchange mechanism. Furthermore, the analysis of the optical data also points out the presence of two distinct Eu3+ local coordination sites with different relaxation kinetics and attributed to lattice-bound and surface-bound centres. The 5D0 lifetime values are longer than those reported previously for sol–gel derived Eu3+-doped CdS NCs.