Recent research on cooling photovoltaic (PV) modules through radiative cooling methods has attracted significant interest, due to the temperature reduction that enhances the power generation of PV modules.This study uses a transparent-radiative heat mirror (TRHM) for cooling silicon PV modules, utilizing a combination of an indium tin oxide (ITO) layer and polydimethylsiloxane (PDMS) to enable visible light transmission while reflecting unnecessary heating photons.Fabricated by a low-cost method, the novelty honeycomb-like surface microstructure of PDMS enhances the material′s emissivity.Combined ITO layer with honeycomb-like PDMS, the film results in a reflectivity of 0.65 in the near-IR range (1.1-2.5 μm, NIR) and an emissivity of 0.93 in the mid-far IR range (8-13 μm, MIR).PV modules covered with TRHM (PV-TRHM) demonstrated a significant emissivity of 0.90 in MIR, leading to a temperature of 44.2°C, which has a 7.2°C reduction compared to the 53.6°C bare PV.Addnl., a 0.81% increase in power conversion efficiency (PCE) was achieved.These approaches hold promise for efficient PV heat management in engineering projects.