Tailoring photonic metamaterial resonances for thermal radiation
Journal Article
·
· Nanoscale Research Letters (Online)
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
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
Similar Records
Design and global optimization of high-efficiency thermophotovoltaic systems
Dual band metamaterial perfect absorber based on Mie resonances
Exceeding the solar cell Shockley–Queisser limit via thermal up-conversion of low-energy photons
Journal Article
·
Sun Aug 01 20:00:00 EDT 2010
· Optics Express
·
OSTI ID:1386906
Dual band metamaterial perfect absorber based on Mie resonances
Journal Article
·
Mon Aug 08 00:00:00 EDT 2016
· Applied Physics Letters
·
OSTI ID:22594355
Exceeding the solar cell Shockley–Queisser limit via thermal up-conversion of low-energy photons
Journal Article
·
Fri Oct 25 20:00:00 EDT 2013
· Optics Communications
·
OSTI ID:1385730