Design of Multilayer Ring Emitter Based on Metamaterial for Thermophotovoltaic Applications

Fekadu Tolessa Maremi, Namkyu Lee, Geehong Choi, Taehwan Kim and Hyung Hee Cho
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Fekadu Tolessa Maremi: Department of Mechanical Engineering, Yonsei University, Seoul 03722, Korea
Namkyu Lee: Department of Mechanical Engineering, Yonsei University, Seoul 03722, Korea
Geehong Choi: Department of Mechanical Engineering, Yonsei University, Seoul 03722, Korea
Taehwan Kim: Semiconductor R&D Center, Samsung Electronics Inc., Suwon 18448, Korea
Hyung Hee Cho: Department of Mechanical Engineering, Yonsei University, Seoul 03722, Korea

Energies, 2018, vol. 11, issue 9, 1-9

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.

Keywords: thermophotovoltaic; selective emitter; broadband absorber; metamaterial (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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