Solution‐Processed All‐Ceramic Plasmonic Metamaterials for Efficient Solar–Thermal Conversion over 100–727 °C,Advanced Materials

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Solution‐Processed All‐Ceramic Plasmonic Metamaterials for Efficient Solar–Thermal Conversion over 100–727 °C
Advanced Materials ( IF 27.4 ) Pub Date : 2020-11-25 , DOI: 10.1002/adma.202005074
Yang Li ₁ , Chongjia Lin ₁ , Zuoxu Wu ₂ , Zhongying Chen ₁ , Cheng Chi ₁ , Feng Cao ₂ , Deqing Mei ₃ , He Yan ₄ , Chi Yan Tso ₅ , Christopher Y. H. Chao ₆ , Baoling Huang ₁

Affiliation

Low‐cost and large‐area solar–thermal absorbers with superior spectral selectivity and excellent thermal stability are vital for efficient and large‐scale solar–thermal conversion applications, such as space heating, desalination, ice mitigation, photothermal catalysis, and concentrating solar power. Few state‐of‐the‐art selective absorbers are qualified for both low‐ (<200 °C) and high‐temperature (>600 °C) applications due to insufficient spectral selectivity or thermal stability over a wide temperature range. Here, a high‐performance plasmonic metamaterial selective absorber is developed by facile solution‐based processes via assembling an ultrathin (≈120 nm) titanium nitride (TiN) nanoparticle film on a TiN mirror. Enabled by the synergetic in‐plane plasmon and out‐of‐plane Fabry–Pérot resonances, the all‐ceramic plasmonic metamaterial simultaneously achieves high, full‐spectrum solar absorption (95%), low mid‐IR emission (3% at 100 °C), and excellent stability over a temperature range of 100–727 °C, even outperforming most vacuum‐deposited absorbers at their specific operating temperatures. The competitive performance of the solution‐processed absorber is accompanied by a significant cost reduction compared with vacuum‐deposited absorbers. All these merits render it a cost‐effective, universal solution to offering high efficiency (89–93%) for both low‐ and high‐temperature solar–thermal applications.

中文翻译：

经过溶液处理的全陶瓷等离子超材料，可在100–727°C的温度下实现有效的太阳热转换

具有出色的光谱选择性和出色的热稳定性的低成本，大面积太阳能吸收器对于高效，大规模的太阳能热转换应用至关重要，例如空间加热，淡化，减冰，光热催化和聚光太阳能。由于在宽温度范围内光谱选择性不足或热稳定性不足，因此很少有先进的选择性吸收器适合低温（< 200 ° C）和高温（> 600 ° C）应用。在这里，一个高性能的等离激元的超材料选择性吸收是通过容易的基于溶液的工艺通过装配的超薄（显影≈TiN镜上的120 nm）氮化钛（TiN）纳米颗粒薄膜。通过协同平面等离子体激元和平面Fabry-Pérot共振，全陶瓷等离子体超材料同时实现了高全光谱太阳能吸收（95％），低中红外发射（100 °C时为3％）。 C），并在100–727 ° C的温度范围内具有出色的稳定性，甚至在特定的工作温度下甚至胜过大多数真空沉积的吸收器。与真空沉积的吸收器相比，固溶吸收器的竞争优势伴随着成本的显着降低。所有这些优点使其成为具有成本效益的通用解决方案，可为低温和高温太阳能应用提供高效率（89％至93％）。

更新日期：2021-01-04

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