Wavelength-selective and diffuse emitter enhanced by magnetic polaritons for thermophotovoltaics

L. P. Wang; Z. M. Zhang

doi:10.1063/1.3684874

Wavelength-selective and diffuse emitter enhanced by magnetic polaritons for thermophotovoltaics

L. P. Wang, Z. M. Zhang

Research output: Contribution to journal › Article › peer-review

154 Scopus citations

Abstract

Both wavelength selectivity and directional insensitivity are highly desired in thermophotovoltaic applications. A concept of a magnetic-polariton- enhanced thermophotovoltaic emitter is presented. The predicted normal emittance from such a nanoengineered surface exceeds 0.8 in the wavelength region from 0.62 to 1.98 μm and is below 0.2 at wavelengths longer than 2.4 μm. Furthermore, thermal emission from the proposed structure is diffuse-like as the emittance changes little with the direction up to 75° from the normal. The strip width allows tuning of the emittance spectrum to match particular photovoltaic cells to potentially enhance power generation with improved conversion efficiency.

Original language	English (US)
Article number	063902
Journal	Applied Physics Letters
Volume	100
Issue number	6
DOIs	https://doi.org/10.1063/1.3684874
State	Published - Feb 6 2012
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Wavelength-selective and diffuse emitter enhanced by magnetic polaritons for thermophotovoltaics",

abstract = "Both wavelength selectivity and directional insensitivity are highly desired in thermophotovoltaic applications. A concept of a magnetic-polariton- enhanced thermophotovoltaic emitter is presented. The predicted normal emittance from such a nanoengineered surface exceeds 0.8 in the wavelength region from 0.62 to 1.98 μm and is below 0.2 at wavelengths longer than 2.4 μm. Furthermore, thermal emission from the proposed structure is diffuse-like as the emittance changes little with the direction up to 75° from the normal. The strip width allows tuning of the emittance spectrum to match particular photovoltaic cells to potentially enhance power generation with improved conversion efficiency.",

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note = "Funding Information: This study was supported by the Department of Energy under contract DE-FG02-06ER46343 (LPW) and the National Science Foundation under grant CBET-0828701 (ZMZ).",

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N2 - Both wavelength selectivity and directional insensitivity are highly desired in thermophotovoltaic applications. A concept of a magnetic-polariton- enhanced thermophotovoltaic emitter is presented. The predicted normal emittance from such a nanoengineered surface exceeds 0.8 in the wavelength region from 0.62 to 1.98 μm and is below 0.2 at wavelengths longer than 2.4 μm. Furthermore, thermal emission from the proposed structure is diffuse-like as the emittance changes little with the direction up to 75° from the normal. The strip width allows tuning of the emittance spectrum to match particular photovoltaic cells to potentially enhance power generation with improved conversion efficiency.

AB - Both wavelength selectivity and directional insensitivity are highly desired in thermophotovoltaic applications. A concept of a magnetic-polariton- enhanced thermophotovoltaic emitter is presented. The predicted normal emittance from such a nanoengineered surface exceeds 0.8 in the wavelength region from 0.62 to 1.98 μm and is below 0.2 at wavelengths longer than 2.4 μm. Furthermore, thermal emission from the proposed structure is diffuse-like as the emittance changes little with the direction up to 75° from the normal. The strip width allows tuning of the emittance spectrum to match particular photovoltaic cells to potentially enhance power generation with improved conversion efficiency.

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Wavelength-selective and diffuse emitter enhanced by magnetic polaritons for thermophotovoltaics

Abstract

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