High-Temperature Refractory Metasurfaces for Solar Thermophotovoltaic Energy Harvesting

被引：151
作者：
Chang, Chun-Chieh [1 ]
Kort-Kamp, Wilton J. M. [2 ,3 ]
Nogan, John [4 ]
Luk, Ting S. [4 ]
Azad, Abul K. [1 ]
Taylor, Antoinette J. [5 ]
Dalvit, Diego A. R. [3 ]
Sykora, Milan [6 ]
Chen, Hou-Tong [1 ]
机构：
[1] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA
[2] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA
[3] Los Alamos Natl Lab, Theoret Div, Los Alamos, NM 87545 USA
[4] Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87123 USA
[5] Los Alamos Natl Lab, Chem Life & Earth Sci Directorate, Los Alamos, NM 87545 USA
[6] Los Alamos Natl Lab, Chem Div, Los Alamos, NM 87545 USA
来源：
NANO LETTERS | 2018年 / 18卷 / 12期
关键词：
Metasurfaces; refractory metamaterials; solar thermophotovoltaics; solar absorbers; thermal emitters; high temperature; SELECTIVE THERMAL EMISSION; CELL EFFICIENCIES; CONVERSION; ABSORBER; EMITTER; PLASMONICS;
D O I：
10.1021/acs.nanolett.8b03322
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Solar energy promises a viable solution to meet the ever-increasing power demand by providing a clean, renewable energy alternative to fossil fuels. For solar thermophotovoltaics (STPV), high-temperature absorbers and emitters with strong spectral selectivity are imperative to efficiently couple solar radiation into photovoltaic cells. Here, we demonstrate refractory metasurfaces for STPV with tailored absorptance and emittance characterized by in situ high-temperature measurements, featuring thermal stability up to at least 1200 degrees C. Our tungsten-based metasurface absorbers have close-to-unity absorption from visible to near-infrared and strongly suppressed emission at longer wavelengths, while our metasurface emitters provide wavelength-selective emission spectrally matched to the band-edge of InGaAsSb photovoltaic cells. The projected overall STPV efficiency is as high as 18% when a fully integrated absorber/emitter metasurface structure is employed, which is comparable to the efficiencies of the best currently available commercial single-junction PV cells and can be further improved to potentially exceed those in mainstream photovoltaic technologies. Our work opens a path forward for high-performance STPV systems based on refractory metasurface structures.
引用
收藏
页码：7665 / 7673
页数：9
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