The potential of radiative cooling enhanced photovoltaic systems in China

Soaring solar cell temperature hindered photovoltaic (PV) efficiency, but a novel radiative cooling (RC) cover developed in this study offered a cost-effective solution. Using a randomly particle-doping structure, radiative cooling cover achieved a high "sky window"emissivity of 95.3% while maintaining a high transmittance of 94.8%. The RC-PV system reached a peak power output of 147.6 W/m2. 2 . A field study explore its potential in various provinces in China revealed significant efficiency improvements, with yearly electricity outputs surpassing those of ordinary PV systems by a relative improvement of 2.78%-3.72%. largest increases were observed under clear skies and in dry, cool climates, highlighting the potential of RC systems under real weather and environmental conditions. This work provided the theoretical foundation designing scalable radiative cooling films for PV systems, unlocking the full potential of solar energy.