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Tailoring photonic metamaterial resonances for thermal radiation

Journal Article · · Nanoscale Research Letters (Online)
Selective solar absorbers generally have limited effectiveness in unconcentrated sunlight, because of reradiation losses over a broad range of wavelengths and angles. However, metamaterials offer the potential to limit radiation exchange to a proscribed range of angles and wavelengths, which has the potential to dramatically boost performance. After globally optimizing one particular class of such designs, we find thermal transfer efficiencies of 78% at temperatures over 1,000°C, with overall system energy conversion efficiencies of 37%, exceeding the Shockley-Quiesser efficiency limit of 31% for photovoltaic conversion under unconcentrated sunlight. This represents a 250% increase in efficiency and 94% decrease in selective emitter area compared to a standard, angular-insensitive selective absorber.
Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
SC0001299
OSTI ID:
1386878
Alternate ID(s):
OSTI ID: 1066957
Journal Information:
Nanoscale Research Letters (Online), Journal Name: Nanoscale Research Letters (Online) Journal Issue: 1 Vol. 6; ISSN 1556-276X
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (11)

Refractory Plasmonics with Titanium Nitride: Broadband Metamaterial Absorber journal October 2014
Broadband Metamaterial Absorbers journal October 2018
Optimizing effectiveness and robustness for solar heat absorbers composed of a periodically nano-structured surface journal August 2019
Light concentration using hetero-junctions of anisotropic low permittivity metamaterials journal November 2013
Damage analysis of a perfect broadband absorber by a femtosecond laser journal November 2019
Recent developments in high-temperature photonic crystals for energy conversion journal January 2012
Enabling high-temperature nanophotonics for energy applications journal January 2012
Numerical Study of an Efficient Solar Absorber Consisting of Metal Nanoparticles journal November 2017
Extremely broadband ultralight thermally-emissive optical coatings journal January 2018
Heat meets light on the nanoscale journal January 2016
Heat meets light on the nanoscale text January 2016

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