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<p>In solar thermophotovoltaic (STPV) systems, efficient and thermally stable thermal emitters are crucial for generating heat radiation necessary for electric power production using photovoltaic cells. In this work, we propose a metasurface made of a nickel cylindrical nanostructure, functioning as an ultrawideband metamaterial emitter operating across the 0.38–9&#xa0;µm wavelength range. The total absorptance/emittance of &gt; 95% spanned a bandwidth of 8.62&#xa0;µm. The efficacy of high-temperature resilient materials in the multilayered structure design exhibited a heat radiation efficiency of 94.5–95.5% across a temperature range of 200–1200°C. The simple design of the metamaterial structure exhibited strong emittance despite variation in structural parameters, showing high tolerance to the parametric changes. Besides that, a designed thermal emitter showed stable performance in response to variations in the polarization and incidence angle of incoming waves. The features show the developed device’s potential for high-temperature applications, including STPV systems for next-generation energy harvesting.</p>

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Multi-cylindrical Nanostructure-Based Ultra-Broadband Metamaterial Thermal Emitter for Next-Generation Photovoltaic Energy Harvesting

  • 期刊论文

  • 发表日期：

    2026年3月9日

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  • Meshari Alsharari,
  • Khaled Aliqab,
  • Ammar Armghan

摘要

In solar thermophotovoltaic (STPV) systems, efficient and thermally stable thermal emitters are crucial for generating heat radiation necessary for electric power production using photovoltaic cells. In this work, we propose a metasurface made of a nickel cylindrical nanostructure, functioning as an ultrawideband metamaterial emitter operating across the 0.38–9 µm wavelength range. The total absorptance/emittance of > 95% spanned a bandwidth of 8.62 µm. The efficacy of high-temperature resilient materials in the multilayered structure design exhibited a heat radiation efficiency of 94.5–95.5% across a temperature range of 200–1200°C. The simple design of the metamaterial structure exhibited strong emittance despite variation in structural parameters, showing high tolerance to the parametric changes. Besides that, a designed thermal emitter showed stable performance in response to variations in the polarization and incidence angle of incoming waves. The features show the developed device’s potential for high-temperature applications, including STPV systems for next-generation energy harvesting.