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Title: High-Temperature Refractory Metasurfaces for Solar Thermophotovoltaic Energy Harvesting

Journal Article · · Nano Letters

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. 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 °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. Finally, our work opens a path forward for high-performance STPV systems based on refractory metasurface structures.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA); LANL Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
89233218CNA000001
OSTI ID:
1483543
Report Number(s):
LA-UR-18-27846
Journal Information:
Nano Letters, Vol. 18, Issue 12; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 100 works
Citation information provided by
Web of Science

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Cited By (7)

Design of thermophotovoltaics for tolerance of parasitic absorption journal January 2019
Thermal degradation of refractory layered metamaterial for thermophotovoltaic emitter under high vacuum condition journal January 2019
Optimum selective emitters for efficient thermophotovoltaic conversion journal January 2020
Asymmetric metasurface structures for light absorption enhancement in thin film silicon solar cell journal March 2019
Development of semiconducting ScN journal February 2019
Ultraefficient thermophotovoltaic power conversion by band-edge spectral filtering journal July 2019
Thermal stability of tungsten based metamaterial emitter under medium vacuum and inert gas conditions
  • Chirumamilla, Manohar; Krishnamurthy, Gnanavel Vaidhyanathan; Rout, Surya Snata
  • Macmillan Publishers Limited, part of Springer Nature https://doi.org/10.15480/882.2721
text January 2020