1：Experimental Design and Method Selection:

The study used a solid-state reaction method to synthesize phosphors, with systematic variation of precursors, crucible materials, flux agents, dopants, temperatures, and times. Characterization included XRPD for mineralogical analysis, SEM-EDS for morphology and composition, ICP and ICP-MS for elemental analysis, and luminance meter for luminescence decay measurements.

2：Sample Selection and Data Sources:

Samples were prepared with different molar ratios and conditions as detailed in Table 1, using raw materials such as BaCO3, Na2SiO3, NH4Cl, Eu2O3, Dy2O3, etc.

3：List of Experimental Equipment and Materials:

Equipment included PANalytical X'Pert Pro diffractometer, FEI Quanta 200 SEM with EDS, Perkin Elmer Optima 4200 DV ICP spectrometer, Thermo Fisher Scientific X Series ICP-MS, Minolta CS-100A luminance meter, and Wood lamp. Materials included various chemicals from suppliers like Aldrich, Riedel-de Ha?n, and Carlo Erba.

4：Experimental Procedures and Operational Workflow:

Raw materials were weighed, mixed, dried, placed in crucibles with purified coal for reducing atmosphere, heated at 1100-1250°C for 3-12 hours, ground, and characterized. Luminescence was measured after excitation with a Wood lamp.

5：Data Analysis Methods:

XRPD data were analyzed using Rietveld method with GSAS software, luminescence decay curves were fitted with kinetic models (e.g., second-order function), and statistical methods were used for reproducibility and deviation calculations.