Ultra-thin and near-unity selective emitter for efficient cooling

Do Hyeon Kim; Gil Ju Lee; Se Yeon Heo; Soomin Son; Kyeong Muk Kang; Heon Lee; Young Min Song

doi:10.1364/OE.438662

Ultra-thin and near-unity selective emitter for efficient cooling

Do Hyeon Kim, Gil Ju Lee, Se Yeon Heo, Soomin Son, Kyeong Muk Kang, Heon Lee, Young Min Song

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

For the efficient radiative cooling of objects, coolers should emit heat within atmospheric transparent window and block heat absorption from the surrounding environments. Thus, selective emitters enable highly efficient cooling via engineered photonic structures such as metamaterials and multi-stacking structures. However, these structures require sophisticated fabrication processes and large quantities of materials, which can restrict mass-production. This study introduces an ultra-thin (∼1 µm) and near-unity selective emitter (UNSE) within the atmospheric window, which can be fabricated using simple and affordable process. The combination of infrared (IR) lossy layers and high index lossless layer enhances the resonance in the structure thus, the emissivity in long wavelength IR region increases to near-unity within a thickness of ∼1 µm.

Original language	English
Pages (from-to)	31364-31375
Number of pages	12
Journal	Optics Express
Volume	29
Issue number	20
DOIs	https://doi.org/10.1364/OE.438662
Publication status	Published - 2021 Sept 27

Bibliographical note

Funding Information:
Funding. National Research Foundation of Korea (NRF-2021R1C1C2013605, 2018M3D1A1058997, 2020R1A2C2004983); Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Kore (20183010014310); GIST Research Institute (GRI) grant.

Publisher Copyright:
© 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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title = "Ultra-thin and near-unity selective emitter for efficient cooling",

abstract = "For the efficient radiative cooling of objects, coolers should emit heat within atmospheric transparent window and block heat absorption from the surrounding environments. Thus, selective emitters enable highly efficient cooling via engineered photonic structures such as metamaterials and multi-stacking structures. However, these structures require sophisticated fabrication processes and large quantities of materials, which can restrict mass-production. This study introduces an ultra-thin (∼1 µm) and near-unity selective emitter (UNSE) within the atmospheric window, which can be fabricated using simple and affordable process. The combination of infrared (IR) lossy layers and high index lossless layer enhances the resonance in the structure thus, the emissivity in long wavelength IR region increases to near-unity within a thickness of ∼1 µm.",

author = "Kim, {Do Hyeon} and Lee, {Gil Ju} and Heo, {Se Yeon} and Soomin Son and Kang, {Kyeong Muk} and Heon Lee and Song, {Young Min}",

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doi = "10.1364/OE.438662",

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T1 - Ultra-thin and near-unity selective emitter for efficient cooling

AU - Kim, Do Hyeon

AU - Lee, Gil Ju

AU - Heo, Se Yeon

AU - Son, Soomin

AU - Kang, Kyeong Muk

AU - Lee, Heon

AU - Song, Young Min

N1 - Funding Information: Funding. National Research Foundation of Korea (NRF-2021R1C1C2013605, 2018M3D1A1058997, 2020R1A2C2004983); Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Kore (20183010014310); GIST Research Institute (GRI) grant. Publisher Copyright: © 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

PY - 2021/9/27

Y1 - 2021/9/27

N2 - For the efficient radiative cooling of objects, coolers should emit heat within atmospheric transparent window and block heat absorption from the surrounding environments. Thus, selective emitters enable highly efficient cooling via engineered photonic structures such as metamaterials and multi-stacking structures. However, these structures require sophisticated fabrication processes and large quantities of materials, which can restrict mass-production. This study introduces an ultra-thin (∼1 µm) and near-unity selective emitter (UNSE) within the atmospheric window, which can be fabricated using simple and affordable process. The combination of infrared (IR) lossy layers and high index lossless layer enhances the resonance in the structure thus, the emissivity in long wavelength IR region increases to near-unity within a thickness of ∼1 µm.

AB - For the efficient radiative cooling of objects, coolers should emit heat within atmospheric transparent window and block heat absorption from the surrounding environments. Thus, selective emitters enable highly efficient cooling via engineered photonic structures such as metamaterials and multi-stacking structures. However, these structures require sophisticated fabrication processes and large quantities of materials, which can restrict mass-production. This study introduces an ultra-thin (∼1 µm) and near-unity selective emitter (UNSE) within the atmospheric window, which can be fabricated using simple and affordable process. The combination of infrared (IR) lossy layers and high index lossless layer enhances the resonance in the structure thus, the emissivity in long wavelength IR region increases to near-unity within a thickness of ∼1 µm.

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EP - 31375

JO - Optics Express

JF - Optics Express

IS - 20

ER -

Ultra-thin and near-unity selective emitter for efficient cooling

Abstract

Bibliographical note

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