Plasmon-Enhanced Infrared Emission Approaching the Theoretical Limit of Radiative Cooling Ability.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 32845157.
- Also identified by DOI 10.1021/acs.nanolett.0c01457.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
Radiative cooling, a passive cooling technique, has shown great potentials in recent years to lower the power consumption of air conditioning. With the ever-increasing cooling power being reported, the theoretical cooling limit of such a technique is still unclear. In this work, we proposed a theoretical limit imposing an upper bound for the attainable cooling power. To approach this limit, we exploited the localized surface plasmon resonance (LSPR) of self-doped In<sub>2</sub>O<sub>3</sub> nanoparticles, which enhance the emissivity in both primary and secondary atmospheric windows. The measured cooling power of poly(methyl methacrylate) (PMMA) films containing 4.5% In<sub>2</sub>O<sub>3</sub> nanoparticles is very close to the limit with the closest value only about 0.4 W/m<sup>2</sup> below the limit. Hopefully, this work may help the researchers better evaluating the performance of their device in the future and pave the way for achieving even higher radiative cooling powers during the daytime operations with the help of LSPR.