Fig. 1
From: High-quantum yield alloy-typed core/shell CdSeZnS/ZnS quantum dots for bio-applications
Comparison of characterizations between the conventional multi-layer quantum dot (MQD) and alloy-typed quantum dot (alloy QD). a Schematic representation of MQD (left) and alloy QD (right). b Transmission electron microscopy (TEM) images of (i) MQDs and (ii) alloy QDs. c UV–vis absorption spectra and PL intensities of (i) MQDs and (ii) alloy QDs (inset: fluorescence spectra under 365-nm UV light). d Comparison of the simulated time-of-flight-medium energy ion scattering (TOF-MEIS) spectra of (i) MQDs and (ii) alloy QDs