Selective thermal emitters with infrared plasmonic indium tin oxide working in the atmosphere
Selective thermal emitters with infrared plasmonic indium tin oxide working in the atmosphere
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DOI：
10.1364/ome.9.002534
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发表时间：
2019-06-01
影响因子：
2.8
通讯作者：
Nagao, Tadaaki
中科院分区：
文献类型：
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作者：
Thang Duy Dao;Anh Tung Doan;Nagao, Tadaaki
在本文中，我们证明，氧化铟锡（ITO）可以是一种材料的选择波长选择性的热发射器，使工作在环境空气中。波长选择性热发射是通过由ITO-Al_2 O_3- ITO三层组成的等离子体ITO完美吸收体（IPAs）实现的，其中顶部ITO层是ITO盘的六边形阵列。模拟的IPAs的光谱显示在明显的共振处接近完美的吸收率（即0.99），这可以很容易地通过改变ITO盘的尺寸来调整。按照预先设计的模拟制造的IPA也表现出优异的谐振吸收率（即0.92），以及良好的谐振可调谐性，这表明IPAs的可观的性能。此外，我们还表明，IPAs也可以用作高效的热发射器，可以在环境空气中工作，而不需要严格的真空或惰性气体条件，为IR等离子体器件提供了另一个平台。(C)根据OSA开放获取出版协议的条款，2019年美国光学学会
In this paper, we prove that indium tin oxide (ITO) can be a material of choice for wavelength-selective thermal emitters that enable operation in ambient air. The waveleng-thselective thermal emission is achieved by plasmonic ITO perfect absorbers (IPAs) composed of ITO - Al2O3 - ITO tri-layers where the top ITO layer is a hexagonal array of ITO disks. Simulated optical spectra of the IPAs reveal nearly perfect absorptivities (i.e. 0.99) at obvious resonances, which can be easily tuned just by changing the size of the ITO disks. The fabricated IPAs that followed the pre-designed simulation also exhibit excellented resonant absorptivities (i.e. 0.92), as well as good resonance tunability, which indicate the appreciable performance of IPAs. Furthermore, we show that IPAs are also feasible to serve as highly-efficient thermal emitters that can operate in ambient air without the need for strict vacuum or inert gas conditions, providing another platform for IR plasmonic devices. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement