Novel and efficient Mie-metamaterial thermal emitter for thermophotovoltaic systems
Novel and efficient Mie-metamaterial thermal emitter for thermophotovoltaic systems
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DOI：
10.1364/oe.24.00a868
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发表时间：
2016-05-16
期刊：
影响因子：
3.8
通讯作者：
Zheng, Yi
中科院分区：
文献类型：
--
作者：
Ghanekar, Alok;Lin, Laura;Zheng, Yi
我们从理论上证明了一种新型的，高效的和具有成本效益的热发射器使用米氏谐振超材料的热光伏（TPV）的应用。我们首次提出了一种基于纳米颗粒嵌入薄膜的热发射器的设计。发射极由沉积在衬底上的钨层顶部的SiO2薄膜组成。该薄膜嵌入有钨纳米颗粒，其改变薄膜的折射率。这在0.4 μ m至2 μ m的波长范围内产生了适合于GaSb和InGaAs基光致发光器件的所需发射特性。有效的介电性能使用Maxwell-Garnett-Mie理论计算。我们的计算表明，这将显着提高TPV电池的效率。我们引入了一个新的参数来衡量热发射器的效率，并用它来比较不同的设计。(C)2016美国光学学会
We theoretically demonstrate a novel, efficient and cost effective thermal emitter using a Mie-resonance metamaterial for thermophotovoltaic (TPV) applications. We propose for the first time the design of a thermal emitter which is based on nanoparticle-embedded thin film. The emitter consists of a thin film of SiO2 on the top of tungsten layer deposited on a substrate. The thin film is embedded with tungsten nanoparticles which alter the refractive index of the film. This gives rise to desired emissive properties in the wavelength range of 0.4 mu m to 2 mu m suitable for GaSb and InGaAs based photovoltaics. Effective dielectric properties are calculated using Maxwell-Garnett-Mie theory. Our calculations indicate this would significantly improve the efficiency of TPV cells. We introduce a new parameter to gauge the efficacy of thermal emitters and use it to compare different designs. (C) 2016 Optical Society of America