论文标题
基于聚合物-TAMM光子结构
Scalable colored sub-ambient radiative coolers based on a polymer-Tamm photonic structure
论文作者
论文摘要
白天辐射冷却器冷却在空气温度以下没有任何电力输入的情况下，而大多数则受到银色或白色外观的限制。尚未实现具有各种颜色，可扩展制造和亚镜子冷却的彩色白天辐射冷却器（CDRC）。我们引入了一个聚合物-TAMM光子结构，以实现由质量因子（Q-Factor）支配的高红红外发射率和一个设计的吸收太阳辐照度。从理论上讲，我们确定了通过黄色，洋红色和青色CDRC进行次级镜冷却的理论阈值。我们通过实验性地制造并观察到白天平均摄入为2.6-8.8摄氏度，夜间的温度下降为4.0-4.4度。此外，我们通过卷到滚动沉积技术展示了可伸缩的洋红色CDRC，其宽度为60厘米，长度为500 cm。这项工作为大规模CDRC提供了指南，并为具有节能，美学和视觉舒适性的潜在应用提供了前所未有的机会。
Daytime radiative coolers cool objects below the air temperature without any electricity input, while most of them are limited by a silvery or whitish appearance. Colored daytime radiative coolers (CDRCs) with diverse colors, scalable manufacture, and sub-ambient cooling have not been achieved. We introduce a polymer-Tamm photonic structure to enable a high infrared emittance and an engineered absorbed solar irradiance, governed by the quality factor (Q-factor). We theoretically determine the theoretical thresholds for sub-ambient cooling through yellow, magenta, and cyan CDRCs. We experimentally fabricate and observe a temperature drop of 2.6-8.8 degrees Celsius on average during daytime and 4.0-4.4degrees Celsius during nighttime. Furthermore, we demonstrate a scalable-manufactured magenta CDRC with a width of 60 cm and a length of 500 cm by a roll-to-roll deposition technique. This work provides guidelines for large-scale CDRCs and offers unprecedented opportunities for potential applications with energy-saving, aesthetic, and visual comfort demands.
