articleCoatingsFeb 6, 2026GOLD OA

Ultra-Wideband Solar Energy Absorption Device Based on Metal–Dielectric Symmetrical Gap Separation

JLJie LuoJGJiangtao GuoGZGuangxu ZhaoYSYan SaoPWPinghui Wu

Chengdu University · China Coal Technology and Engineering Group Corp (China) · +3 more institutions

Indexed incrossref

Abstract

Solar energy stands as one of the most promising green energy sources today. This paper proposes a symmetrical gap-type separated solar absorber and radiator (SETR) featuring a dielectric layer of Al2O3 and metal W as separation columns. Its unique structure enhances absorption within the effective solar energy spectrum, thereby alleviating solar energy absorption challenges. The finite difference time domain method (FDTD) results show that the SETR achieves an absorption rate of more than 90% in the 280–2096 nm band, which perfectly covers the visible light band range. The weighted average absorption in the 280–2500 nm band is 95.22% under AM1.5 conditions. The thermal emission efficiency at 1500 K is 95.13%,…

Citation impact

46
total citations
FWCI
381.43
Percentile
100%
References
72
Citations per year

Authors

7

Topics & keywords

Topics
Keywords
  • Absorption (acoustics)
  • Solar energy
  • Radiator (engine cooling)
  • Thermal
  • Radiation
  • Polarization (electrochemistry)
  • Thermal energy
  • Theory of solar cells
UN Sustainable Development Goals
  • Affordable and clean energy
No related works found for this paper.

Funding