AI Article Synopsis
- Cerate nanoceramics are gaining attention for their potential in improving heat management and solar reflectance.
- This study uses advanced calculations to show that LaCeO and AlCeO materials have excellent temperature stability, UV-vis/near-infrared reflectance, and customizable mid-infrared emissivity.
- It also explores how defects and aluminum impurities in the materials can create unique environments for better infrared emission, which is useful for passive cooling technologies.
Article Abstract
Cerate nanoceramics have been recently considered to be key materials for radiative thermal management and enhanced solar reflectance. Herein, we demonstrate by means of first-principles density functional theory calculations how experimentally prepared LaCeO and AlCeO materials with defective fluorite structure exhibit superior temperature stability, strong UV-vis/near-infrared reflectance, and tunable mid-infrared emissivity, thus representing excellent host matrices for doping-controlled chromatic and thermal properties. By means of phonon dispersion analysis, we demonstrate how disorder and aluminum impurities induce locally distorted chemical environments that can be exploited for achieving selective infrared emittance for passive radiative cooling devices.
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| http://dx.doi.org/10.1021/acs.nanolett.4c04891 | DOI Listing |
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