Ultrabroadband Photonic Structures To Achieve High-Performance Daytime Radiative Cooling

被引：975

作者：

Rephaeli, Eden ^{[1
]}

Raman, Aaswath ^{[1
]}

Fan, Shanhui ^{[2
]}

机构：

[1] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA

[2] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA

来源：

NANO LETTERS | 2013年 / 13卷 / 04期

关键词：

Radiative cooling; thermal radiation; broadband solar mirror; phonon-polariton; selective emission; THERMAL EMISSION; THERMOPHOTOVOLTAIC SYSTEMS; PIGMENTED POLYETHYLENE; EFFICIENCY; ABSORBER; SURFACES; CRYSTAL; SILICON; DESIGN; FILMS;

D O I：

10.1021/nl4004283

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

If properly designed, terrestrial structures can passively cool themselves through radiative emission of heat to outer space. For the first time, we present a metal-dielectric photonic structure capable of radiative cooling in daytime outdoor conditions. The structure behaves as a broadband mirror for solar light, while simultaneously emitting strongly in the mid-IR within the atmospheric transparency window, achieving a net cooling power in excess of 100 W/m(2) at ambient temperature. This cooling persists in the presence of significant convective/conductive heat exchange and nonideal atmospheric conditions.

引用

页码：1457 / 1461

页数：5

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