Sub-ambient daytime radiative cooling by silica-coated porous anodic aluminum oxide
SCIE
SCOPUS
- Title
- Sub-ambient daytime radiative cooling by silica-coated porous anodic aluminum oxide
- Authors
- Lee, D.; Go, M.; Son, S.; Kim, M.; Badloe, T.; Lee, H.; Kim, J.K.; Rho, J.
- Date Issued
- 2021-01
- Publisher
- ELSEVIER
- Abstract
- An energy-free daytime radiative cooler based on silica-coated porous anodic aluminum oxide is proposed, optimized, and experimentally realized. It is shown that a simple thin silica layer coating on porous anodic aluminum oxide can produce the spectral emissivity in the atmospheric window (8-13 mu m) required for subambient cooling effect under direct sunlight. The final design, optimized using effective medium theory, exhibits high reflectance of 0.86 in the solar spectral region, and a substantial average emissivity of 0.96 in the atmospheric window. The fabricated centimeter-scale radiative cooler demonstrates a maximum cooling of 6.1 degrees C below ambient during the daytime. We believe that the proposed approach is a promising way to produce inexpensive and efficient radiative coolers.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/105359
- DOI
- 10.1016/j.nanoen.2020.105426
- ISSN
- 2211-2855
- Article Type
- Article
- Citation
- NANO ENERGY, vol. 79, 2021-01
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.