1：Experimental Design and Method Selection:

The study involved the synthesis of SiO2–Na2O–Al2O3–LaF3 glasses doped with Eu2t and Mn2t using the conventional melt quenching method under a reduction atmosphere provided by covering carbon on top of the mixture. The effect of heat treatment on crystallization and emission properties was examined.

2：Sample Selection and Data Sources:

High purity (>99.99%) raw materials were used. The concentration of EuF3 and MnO was varied to study their effects on emission properties.

3：99%) raw materials were used. The concentration of EuF3 and MnO was varied to study their effects on emission properties. List of Experimental Equipment and Materials:

3. List of Experimental Equipment and Materials: X-ray diffractometer (XRD; Rigaku, D/MAX-2500U), field-emission transmission electron microscope (FE-TEM; JEOL, JEM-2100 F), 400 nm blue LED source (Thorlabs, M405L2), 0.25 m monochromator (Thermo Oriel, MS257), lock-in amplifier (Thermo Oriel, Merlin?), and photomultiplier tube were used.

4：25 m monochromator (Thermo Oriel, MS257), lock-in amplifier (Thermo Oriel, Merlin?), and photomultiplier tube were used. Experimental Procedures and Operational Workflow:

4. Experimental Procedures and Operational Workflow: Glasses were melted at 1450°C for 1 h, annealed at 400°C for 2 h, and heat-treated at varying temperatures for crystallization. PL spectra were recorded under 400 nm excitation.

5：Data Analysis Methods:

Emission spectra were analyzed to study the effect of Eu2t and Mn2t doping and heat treatment on color conversion properties.