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Energies 2018, 11(9), 2299; https://doi.org/10.3390/en11092299

Design of Multilayer Ring Emitter Based on Metamaterial for Thermophotovoltaic Applications

1
Department of Mechanical Engineering, Yonsei University, Seoul 03722, Korea
2
Semiconductor R&D Center, Samsung Electronics Inc., Suwon 18448, Korea
*
Author to whom correspondence should be addressed.
Received: 8 August 2018 / Revised: 24 August 2018 / Accepted: 29 August 2018 / Published: 31 August 2018
(This article belongs to the Special Issue Nanotechnology for Energy Materials)
Full-Text   |   PDF [2488 KB, uploaded 31 August 2018]   |  

Abstract

The objective of this study is to design a broadband and wide-angle emitter based on metamaterials with a cut-off wavelength of 2.1 µm to improve the spectral efficiency of thermophotovoltaic emitters. To obtain broadband emission, we conducted the geometric parameter optimization of the number of stacked layers, the inner and outer radii of the nano-rings, and the thickness of the nano-rings. The numerical simulation results showed that the proposed emitter had an average emissivity of 0.97 within the targeted wavelength, which ranged from 0.2 µm to 2.1 µm. In addition, the presented multilayer nano-ring emitter obtained 79.6% spectral efficiency with an InGaAs band gap of 0.6 eV at 1400 K. View Full-Text
Keywords: thermophotovoltaic; selective emitter; broadband absorber; metamaterial thermophotovoltaic; selective emitter; broadband absorber; metamaterial
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Maremi, F.T.; Lee, N.; Choi, G.; Kim, T.; Cho, H.H. Design of Multilayer Ring Emitter Based on Metamaterial for Thermophotovoltaic Applications. Energies 2018, 11, 2299.

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