Sub-ambient full-color passive radiative cooling under sunlight based on efficient quantum-dot photoluminescence

doi:10.1016/j.scib.2022.08.028

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	Sub-ambient full-color passive radiative cooling under sunlight based on efficient quantum-dot photoluminescence
	X. Y. Wang; Q. Zhang; S. H. Wang; C. Q. Jin; B. Zhu; Y. C. Su; X. Y. Dong; J. Liang; Z. D. Lu; L. Zhou; W. Li; S. N. Zhu and J. Zhu
	2022
发表期刊	Science Bulletin
ISSN	2095-9273
卷号	67 期号:18 页码:1874-1881
摘要	Daytime radiative cooling with high solar reflection and mid-infrared emission offers a sustainable way for cooling without energy consumption. However, so far sub-ambient daytime radiative coolers typically possess white/silver color with limited aesthetics and applications. Although various colored radiative cooling designs have been pursued previously, multi-colored daytime radiative cooling to a temperature below ambient has not been realized as the solar thermal effect in the visible range lead to significant thermal load. Here, we demonstrate that photoluminescence (PL) based colored radiative coolers (PCRCs) with high internal quantum efficiency enable sub-ambient full-color cooling. As an example of experimental demonstration, we develop a scalable electrostatic-spinning/inkjet printing approach to realize the sub-ambient multi-colored radiative coolers based on quantum-dot photoluminescence. The unique features of obtained PCRCs are that the quantum dots atop convert the ultraviolet-visible sunlight into emitted light to minimize the solar-heat generation, and cellulose acetate based nanofibers as the underlayer that strongly reflect sunlight and radiate thermal load. As a result, the green, yellow and red colors of PCRCs achieve temperatures of 5.4-2.2 degrees C below ambient under sunlight (peak solar irradi-ance >740 W mz), respectively. With the excellent cooling performance and scalable process, our designed PCRC opens a promising pathway towards colorful applications and scenarios of radiative cooling.(c) 2022 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.
DOI	10.1016/j.scib.2022.08.028
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收录类别	sci ; ei
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67126
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	X. Y. Wang,Q. Zhang,S. H. Wang,et al. Sub-ambient full-color passive radiative cooling under sunlight based on efficient quantum-dot photoluminescence[J]. Science Bulletin,2022,67(18):1874-1881.
APA	X. Y. Wang.,Q. Zhang.,S. H. Wang.,C. Q. Jin.,B. Zhu.,...&S. N. Zhu and J. Zhu.(2022).Sub-ambient full-color passive radiative cooling under sunlight based on efficient quantum-dot photoluminescence.Science Bulletin,67(18),1874-1881.
MLA	X. Y. Wang,et al."Sub-ambient full-color passive radiative cooling under sunlight based on efficient quantum-dot photoluminescence".Science Bulletin 67.18(2022):1874-1881.

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