1：Experimental Design and Method Selection:

The study used UV photoluminescence spectroscopy to analyze Mars-analogue materials doped with PAHs, carbonaceous chondrites, and kerogen. Excitation wavelengths of 280 nm and 365 nm were employed, with measurements at room temperature and 20 K using cryogenic systems.

2：Sample Selection and Data Sources:

Samples included Mars analogue sediments from Iceland (gypsum, mudstone, iron oxide soils), synthetic salt crystals (epsomite, halite), carbonaceous CM chondrites (Meteorite Hills MET01072, Alan Hills ALH84044, Murchison), and terrestrial Type IV kerogen. PAHs (anthracene, perylene, pyrene) were doped at concentrations of 15 ppm for sediments and 2 ppm for salts.

3：List of Experimental Equipment and Materials:

Equipment included UV LEDs for excitation, Horiba Jobin Yvon iHR320 spectrometer, Hyperspectral Luminescence and Optical Spectroscopy (HeLIOS) instrument, closed-loop helium cryostat, Spectral Evolution RS-3500 spectrometer for VNIR, Horiba LabRAM HR for Raman spectroscopy, Philips PW1050 / Hiltonbrooks DG2 for XRD. Materials included PAHs from Sigma Aldrich, synthetic salts, and various geological samples.

4：Experimental Procedures and Operational Workflow:

Samples were prepared by powdering, doping with PAHs, and pressing into holders. UV PL measurements were conducted with specific excitation wavelengths, using filters to exclude excitation light. Data were collected and normalized for analysis.

5：Data Analysis Methods:

Spectra were analyzed for emission peaks and intensities, with normalization to compare spectral shapes. Surface area differences in photoluminescence were calculated for doped vs. undoped samples.