1：Experimental Design and Method Selection:

High-temperature solid-state reaction method was used to prepare Sm3+-doped LnBWO6 phosphors. The rationale was to synthesize pure phase phosphors for luminescence studies. Theoretical models included Van Uitert's model for concentration quenching and equations for critical distance and activation energy.

2：Sample Selection and Data Sources:

Samples were prepared with varying Sm3+ concentrations in LaBWO6, GdBWO6, and YBWO6 hosts. Raw materials included H3BO3, WO3, La2O3, and Sm2O3, all of analytical or high purity grade.

3：List of Experimental Equipment and Materials:

Equipment included Panalytical X'pert pro X-ray diffractometer, Lambda 650S spectrophotometer, Cary Eclipse fluorescence spectrophotometer, Edinburgh Instruments FL980 UV-vis-NIR spectrophotometer, HAAS-2000 color analyzer, C9920-02 quantum yield measurement system, and EX-1000 thermal quenching analyzer. Materials included agate mortar, alumina crucible, muffle furnace, and BaSO4 reference.

4：Experimental Procedures and Operational Workflow:

Raw materials were weighed, ground, sintered at 950°C for 10h, and cooled. XRD, diffuse reflectance, PL spectra, decay lifetimes, CIE coordinates, quantum yield, and temperature-dependent PL were measured at room temperature.

5：Data Analysis Methods:

Data were analyzed using fitting with exponential functions, calculation of critical distance and activation energy, and linear regression for concentration quenching mechanism.