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2025 Vol.45, Issue 6 Preview Page

Research Article

Polymer-free Multilayer Visibly Transparent Radiative Cooler via Spectrally Selective Inverse Design

분광 선택적 역설계를 통한 무고분자 다층 투명 복사 냉각기

Daejong Lee1
,
Chansoo Baek 2*
이 대종1
,
백 찬수2*
1Research Director, DVTECH
2Assitant Professor, Department of Fire Safety Management, Deagu Health College
1디브이테크, 연구소장
2대구보건대학교 소방안전관리학과, 조교수
*Corresponding Author
30 December 2025. pp. 37-45
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Abstract

Radiative cooling is a promising approach for sustainable thermal management that does not consume energy. We developed a polymer-free, multilayer, visibly transparent radiative cooler (PF-MTRC) structure. We designed this structure using a spectrally selective inverse design method based on particle swarm, and we evaluated the performance of the structure through numerical simulations. The visible light transparency, near-infrared reflectance, and mid-infrared absorptivity of a single six-layer PF-MTRC structure were 58.7%, 74.7%, and of 84%, respectively. The solar reflectance and the mid-infrared emissivity of the PF-MTRC were higher than and comparable to those of the conventional polymer-based emitter layer, respectively, demonstrating higher spectral selectivity within a single multilayer design. Additionally, the PF-MTRC was highly stable in the tolerance to thickness variations during fabrication. PF-MTRC shows the potential to overcome the durability issues of conventional polymer-based structures for applications in transparent passive cooling devices.

Keywords
Transparent radiative cooler
Multilayer
Spectrally selective design
Inverse design
키워드
투명 복사 냉각기
다층 구조
파장 선택적 설계
역설계
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Information
  • Publisher :Korean Solar Energy Society
  • Publisher(Ko) :한국태양에너지학회
  • Journal Title :Journal of the Korean Solar Energy Society
  • Journal Title(Ko) :한국태양에너지학회 논문집
  • Volume : 45
  • No :6
  • Pages :37-45
  • Received Date : 2025-10-02
  • Revised Date : 2025-10-19
  • Accepted Date : 2025-11-11
  • DOI :https://doi.org/10.7836/kses.2025.45.6.037
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