A broad-band polarization-insensitive absorber with a wide angle range metamaterial for thermo-photovoltaic conversion

Anew absorber design using metamaterials for thermo photovoltaic applications is simulated here. Conventional absorbents normally have narrow band-widths and/or sensitive-polarization. Alternatively, the present study shows the possibility to find an infrared absorber structure with optimal characte...

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Bibliographic Details
Published in:Optical and quantum electronics 2018, Vol.50 (1), p.1-10, Article 10
Main Authors: Bendelala, Fathi, Cheknane, Ali, Hilal, Hikmat S.
Format: Article
Language:English
Subjects:
Absorbers (materials)
Absorption
Cavity resonators
Characterization and Evaluation of Materials
Computer Communication Networks
Electrical Engineering
Lasers
Metamaterials
Optical Devices
Optics
Photonics
Photovoltaic conversion
Physics
Physics and Astronomy
Polarization
Resonators
Substrates
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Summary:Anew absorber design using metamaterials for thermo photovoltaic applications is simulated here. Conventional absorbents normally have narrow band-widths and/or sensitive-polarization. Alternatively, the present study shows the possibility to find an infrared absorber structure with optimal characteristics involving a metal-dielectric. A combination of two resonators, circular cavity in a square metallic patch, laid on a dielectric substrate is proposed here. With this design, the results show that wide-band absorption can be achieved. The absorption bandwidth can be widened from 57.2 to 95.4 THz, with absorption efficiency higher than 90%. This structure design is polarization-insensitive to incident electromagnetic wave angles. These new features make the new absorber potentially useful in thermo-photovoltaic conversion applications.
ISSN:0306-8919
1572-817X
DOI:10.1007/s11082-017-1273-3