1：Experimental Design and Method Selection:

The study employed an in situ fabricated CH3NH3PbBr3 quantum dot/polyacrylonitrile (PAN) composite film as the LDS layer to enhance the UV-blue spectral response of silicon solar cells.

2：Sample Selection and Data Sources:

Commercial silicon solar cells were used, with the LDS layer applied via spin coating.

3：List of Experimental Equipment and Materials:

UV-6100 UV-vis spectrophotometer, F-380 fluorescence spectrometer, fluorescence spectrometer with an integrating sphere (C9920-02, Hamamatsu Photonics), fluorescence lifetime measurement system (C11367-11, Hamamatsu Photonics), Ambios XP-200 surface profiler, ellipsometer (M-2000D), JEOL-JEM 2100F transmission electron microscope, Bruker D8 FOCUS X-ray diffractometer, Thermo Fisher Scientific Nicolet 8700 spectrometer, PHI QUANTERA-II SXM X-ray photoelectron spectrometer.

4：Experimental Procedures and Operational Workflow:

The precursor solution was spin-coated onto the surface of quartz substrates and PV devices, forming a transparent layer. The thickness of the PQDCFs was controlled by varying the spinning speed.

5：Data Analysis Methods:

UV-vis transmittance spectra, PL spectra, absolute PLQYs, time-resolved PL measurements, thickness and refractive index measurements, TEM analysis, XRD measurements, FTIR measurements, XPS measurements.