1：Experimental Design and Method Selection:

The study involved the synthesis of bare CdSe core and CdSe/ZnS core/shell QDs using a colloidal technique at varying temperatures. Structural characterizations were performed using XRD and HRTEM, while optical characterizations utilized UV-Vis absorption and fluorescence emission spectroscopies.

2：Sample Selection and Data Sources:

Samples were synthesized at temperatures ranging from 150°C to 175°C for bare CdSe core QDs and at 160°C and 170°C for CdSe/ZnS core/shell QDs, with reaction times varying from 1 to 20 minutes.

3：List of Experimental Equipment and Materials:

Equipment included a Shimadzu UV-Vis NIR absorption spectrometer, JEOL JEM-ARM200CFEG UHR-TEM, and X’Pert3 MRD (XL) X-ray diffractometer. Materials included cadmium acetate, oleic acid, phenyl ether, TOPSe, Zn(OAc)2-2H2O, and S powder.

4：Experimental Procedures and Operational Workflow:

The synthesis involved heating and cooling steps under nitrogen flow, followed by the addition of precursors and heating to specific temperatures for reaction times. The products were characterized using XRD, HRTEM, UV-Vis absorption, and fluorescence emission techniques.

5：Data Analysis Methods:

Data analysis involved fitting XRD spectra with Gaussian profiles, calculating core band gaps from UV-Vis absorption spectra, and using strain-modified effective mass approximation to predict core band gaps and diameters.