1. Schematic of preparation of quantum dots glass- ceramicsAC: After crystallization; BC: Before crystallization

2. Crystal structures and optical properties of PQDs@glass at different temperatures for 2 h(a) XRD patterns; (b) PL spectra; (c) PLQY and PL intensity; (d) Fluorescence lifetime curvesColorful images are available on website

3. TEM characterization and size distribution analyses of PQDs@glass(a, b) TEM images before (a) and after (b) heat-treatment; (c) High-resolution TEM image; (d, e) TEM image and EDS mappings; (f) Schematic diagram of the relationship between size and band gap of CsPbBr₃ QDs; (g-k) TEM images and size statistics

4. (a) Photographs, (b) XRD patterns and (c) PL spectra of CsPbBr₃ QDs@glass with different Pb²⁺ concentrations

5. Structural characterization of PQDs@glass at different Pb²⁺ concentrations(a, b) FT-IR and XPS spectra, and (c) the ratio of bridging to non-bridging oxygen bonds; Colorful figures are available on website

6. Stability experiments of PQDs@glass(a, b) Variations in PL intensity and FWHM of water resistance (a) and UV stability (b), and (c) experimental results of thermal cycling stability

7. (a) LED device fabricated with CsPbBr₃ QDs@glass, and (b) CIE coordinates of CsPbBr₃ QDs@glass LED devices at different Pb²⁺ concentrations