TY - JOUR
T1 - Scalable and paint-format microparticle–polymer composite enabling high-performance daytime radiative cooling
AU - Chae, D.
AU - Son, S.
AU - Lim, H.
AU - Jung, P. H.
AU - Ha, J.
AU - Lee, H.
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- 2018M3D1A1058997 ), the International Research & Development Program of the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (Grant number: 2019K1A47A02113032 ), and the Technology Innovation Program ( 20000887 , Development of self healing impact resistant film coating material and process technology for rollable displays) funded By the Ministry of Trade, Industry & Energy(MOTIE, Korea) . D. Chae acknowledge the NRF Global Ph.D. fellowships ( NRF-2019H1A2A1076622 ) funded by the Ministry of Education, Republic of Korea .
Publisher Copyright:
© 2021
PY - 2021/5
Y1 - 2021/5
N2 - Radiative cooling, a process in which the Earth maintains a near-constant temperature despite significant solar flux, is a promising technology with no requirement of any input energy for sub-ambient cooling as well as no emission of greenhouse gas. Here, we demonstrate a paint-format microparticle–polymer composite with a low fabrication cost, simple structure, and high radiative cooling performance. Harnessing intrinsic optical properties of aluminum oxide and silicon oxide particles with large energy bandgaps and complementary IR emission properties within the atmospheric transparency window, the proposed radiative cooling paint has an extremely low solar absorptivity of 0.032 and strong IR emission of 0.935 in the atmospheric transparency window. Furthermore, many outdoor measurements proved the RC paint provided high-performance radiative cooling effect for comparison with commercial white paint even in hot summer season detrimental for daytime raditaive cooling, enabling the practical use of radiative cooling.
AB - Radiative cooling, a process in which the Earth maintains a near-constant temperature despite significant solar flux, is a promising technology with no requirement of any input energy for sub-ambient cooling as well as no emission of greenhouse gas. Here, we demonstrate a paint-format microparticle–polymer composite with a low fabrication cost, simple structure, and high radiative cooling performance. Harnessing intrinsic optical properties of aluminum oxide and silicon oxide particles with large energy bandgaps and complementary IR emission properties within the atmospheric transparency window, the proposed radiative cooling paint has an extremely low solar absorptivity of 0.032 and strong IR emission of 0.935 in the atmospheric transparency window. Furthermore, many outdoor measurements proved the RC paint provided high-performance radiative cooling effect for comparison with commercial white paint even in hot summer season detrimental for daytime raditaive cooling, enabling the practical use of radiative cooling.
KW - Atmospheric transparency window
KW - Passive daytime radiative cooling
KW - Radiative cooling paint
KW - Solar reflectance
UR - http://www.scopus.com/inward/record.url?scp=85103262713&partnerID=8YFLogxK
U2 - 10.1016/j.mtphys.2021.100389
DO - 10.1016/j.mtphys.2021.100389
M3 - Article
AN - SCOPUS:85103262713
VL - 18
JO - Materials Today Physics
JF - Materials Today Physics
SN - 2542-5293
M1 - 100389
ER -