Siyuan Jia1 ∙ Meijiao Huang1 ∙ Xiaofeng Jiang1 ∙ Chun Shen1 ∙ Sen Chen1 ∙ Guowen Meng2 ∙ Xiuqiang Li1,3 xiuqiang.li@nuaa.edu.cn ∙ Wanlin Guo1

SUMMARY  

The daytime radiative cooling technique effectively dissipates heat by emitting thermal radiation while re f  lecting a majority of sunlight. However, its compatibility with solar cells for efficient energy conversion  hasposedchallengesduetotheneedtoreflectsunlight.Herein,wehavesuccessfullydevelopedatransmis sion-type daytime radiation cooling system and designed a tandem structure that integrates daytime radia tive coolingwithsolarcells.Thisdeviceachievedupto40W/m2coolingpowerdensityandupto103.33W/m2  photovoltaic power density in sunny weather conditions (with a solar cell power conversion efficiency of  11.42% and a bare solar cell efficiency of 12.92%). Simulation results demonstrate that increasing the heat  transfer efficiency of cooling and reducing the absorptivity in the sunlight band of the emitter can further  enhance device performance. This outcome presents a novel approach toward enhancing the practical  implementation of tandem daytime radiative cooling and solar power generation.

https://doi.org/10.1016/j.xcrp.2024.102343