TY - JOUR
T1 - Acrylic membrane doped with Al2O3 nanoparticle resonators for zero-energy consuming radiative cooling
AU - Liu, Yuting
AU - Son, Soomin
AU - Chae, Dongwoo
AU - Jung, Pil Hoon
AU - Lee, Heon
N1 - Funding Information:
This research was supported by Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science and ICT ( NRF-2018M3D1A1058972 ) and the Technology Innovation Program ( N0002310 ) funded by the Ministry of Trade, Industry & Energy ( MOTIE , Korea).
Funding Information:
This research was supported by Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science and ICT (NRF-2018M3D1A1058972) and the Technology Innovation Program (N0002310) funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea).
Publisher Copyright:
© 2020
PY - 2020/8/15
Y1 - 2020/8/15
N2 - Passive daytime radiative cooling plays a significant role in various cooling operations, which helps reducing electricity consumption and decreasing electricity demand. This work presents a new double-layered radiative cooling structure composed of a transparent dipentaerythritol penta-hexa-acrylate (DPHA) top layer, modified using Al2O3 nanoparticles (NPs) as resonators, and a metallic Ag bottom layer (DPHA@Al2O3 NPs/Ag). The DPHA@Al2O3 NPs layer is prepared through a fast photopolymerization process. The prepared DPHA@Al2O3 NPs/Ag system exhibits a solar reflectivity of 0.9465 and long-wave infrared (the so-called atmospheric transparency window) emissivity of 0.9163. The computed radiative cooling power at 27 °C can reach up to 106.43 W m−2. A subambient temperature drop of 10.35 °C is measured from 13:00 to 16:00 p.m. in Seoul, Korea, when using the proposed material as radiative cooler. Since this structure can be applied on flexible substrate, this has far-reaching implications for future applications in wearable devices.
AB - Passive daytime radiative cooling plays a significant role in various cooling operations, which helps reducing electricity consumption and decreasing electricity demand. This work presents a new double-layered radiative cooling structure composed of a transparent dipentaerythritol penta-hexa-acrylate (DPHA) top layer, modified using Al2O3 nanoparticles (NPs) as resonators, and a metallic Ag bottom layer (DPHA@Al2O3 NPs/Ag). The DPHA@Al2O3 NPs layer is prepared through a fast photopolymerization process. The prepared DPHA@Al2O3 NPs/Ag system exhibits a solar reflectivity of 0.9465 and long-wave infrared (the so-called atmospheric transparency window) emissivity of 0.9163. The computed radiative cooling power at 27 °C can reach up to 106.43 W m−2. A subambient temperature drop of 10.35 °C is measured from 13:00 to 16:00 p.m. in Seoul, Korea, when using the proposed material as radiative cooler. Since this structure can be applied on flexible substrate, this has far-reaching implications for future applications in wearable devices.
KW - Nanoparticle resonators
KW - Passive daytime radiative cooling
KW - Photopolymerization
KW - Subambient temperature drop
KW - Thermal stability
UR - http://www.scopus.com/inward/record.url?scp=85083441494&partnerID=8YFLogxK
U2 - 10.1016/j.solmat.2020.110561
DO - 10.1016/j.solmat.2020.110561
M3 - Article
AN - SCOPUS:85083441494
SN - 0927-0248
VL - 213
JO - Solar Energy Materials and Solar Cells
JF - Solar Energy Materials and Solar Cells
M1 - 110561
ER -
