1：Experimental Design and Method Selection:

Hydrothermal synthesis method was used to prepare Sm3+, Tb3+ co-doped NaLa(MoO4)2 phosphors with sodium citrate as a chelating agent, controlling the proportion of sodium citrate to achieve different morphologies. The rationale was to investigate how morphology affects temperature sensing properties.

2：Sample Selection and Data Sources:

Samples were synthesized with molar ratios of Sm(NO3)3: Tb(NO3)3: La(NO3)3 =

3：

5:

4：7 and Na3Cit:

Re(NO3)3: Na2MoO4 = x: 1: 2 (x = 0, 1, 2, 3). Data were obtained from experimental measurements of XRD, SEM, and fluorescence spectra.

5：3). Data were obtained from experimental measurements of XRD, SEM, and fluorescence spectra. List of Experimental Equipment and Materials:

3. List of Experimental Equipment and Materials: Equipment included Rigaku D/max 2600 diffractometer for XRD, Hitachi-SU70 for SEM, Edinburgh Instruments FLS920 fluorescence spectrometer for emission and excitation spectra, and Orient KOJI TAP-02 high temperature fluorescent controller for temperature control. Materials included sodium citrate, rare earth nitrates, and sodium molybdate.

6：Experimental Procedures and Operational Workflow:

Samples were synthesized hydrothermally, characterized by XRD and SEM to determine structure and morphology, and temperature-dependent emission spectra were measured from 303 K to 603 K with 270 nm excitation. Data were analyzed to calculate fluorescence intensity ratios and sensitivities.

7：Data Analysis Methods:

Data were analyzed using equations for fluorescence intensity ratio (FIR), sensitivity (S), and relative sensitivity (SR), with fitting to experimental data using specified formulas. Statistical analysis involved correlation coefficients from fitting procedures.