| Autor: |
Wray PR, Su MP, Atwater HA |
| Jazyk: |
angličtina |
| Zdroj: |
Optics express [Opt Express] 2020 Nov 23; Vol. 28 (24), pp. 35784-35794. |
| DOI: |
10.1364/OE.408845 |
| Abstrakt: |
Research on radiative cooling has attracted recent widespread interest owing to the potential for low-cost passive structures to enable large-scale thermal energy management. Using a generalized effective medium theory, we theoretically show that two-layer films comprised of SiO 2 and Si 3 N 4 nanoparticle layers on an Ag back reflector exhibit superior radiative cooling compared to single-layer or two-layer dense solid films, and can outperform other reported designs. The performance enhancement is a result of the ability to tune the nanoparticle fill fraction, which improves the spectral match between emissivity of this structure and the atmospheric transmission window. We also propose a standardized method for comparing the performance of radiative cooling structures reported by the research community. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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