1：Experimental Design and Method Selection:

The study employed solid-state reaction synthesis to prepare CaTiO3 doped with Dy3+ ions at various concentrations. X-ray diffraction (XRD) was used for structural analysis, and photoluminescence (PL) spectroscopy was conducted to study emission properties. Theoretical models from Blasse and Van Uitert were applied to analyze concentration quenching and energy transfer mechanisms.

2：Sample Selection and Data Sources:

Samples were prepared with Dy3+ concentrations ranging from 0 to 2.5 mol%. Data were sourced from experimental measurements using XRD and PL equipment.

3：5 mol%. Data were sourced from experimental measurements using XRD and PL equipment. List of Experimental Equipment and Materials:

3. List of Experimental Equipment and Materials: Materials included CaCO3, TiO2, Dy2O3, and H3BO3 as flux. Equipment used: Spectrofluorophotometer (SHIMADZU, RF-5301PC) with Xenon lamp for PL measurements, Panalytical Xpert PRO MPD for XRD, Field Effect Gun – Scanning Electron Microscope (JSM-7600F) for SEM, and Thermoluminescence Reader Type TL1009 by NUCLEONIX SYSTEMS for TL studies.

4：Experimental Procedures and Operational Workflow:

Materials were ground, pre-sintered at 900°C, and fired at 1200°C for 2 hours. XRD patterns were matched using Match! software. PL excitation and emission spectra were recorded at specific wavelengths. Data analysis involved calculating lattice parameters, critical distance, and multipolar character using established formulas.

5：Data Analysis Methods:

XRD data were refined using Celref software. PL intensity data were analyzed to determine concentration quenching, with critical distance calculated using Blasse's formula and multipolar character determined from Van Uitert's equation. CIE coordinates and CCT were computed for color analysis.