Design of Multilayer Ring Emitter Based on Metamaterial for Thermophotovoltaic Applications

被引：34
|
作者：
Maremi, Fekadu Tolessa [1 ]
Lee, Namkyu [1 ]
Choi, Geehong [1 ]
Kim, Taehwan [2 ]
Cho, Hyung Hee [1 ]
机构：
[1] Yonsei Univ, Dept Mech Engn, Seoul 03722, South Korea
[2] Samsung Elect Inc, Semicond R&D Ctr, Suwon 18448, South Korea
来源：
ENERGIES | 2018年 / 11卷 / 09期
关键词：
thermophotovoltaic; selective emitter; broadband absorber; metamaterial; PHOTOVOLTAIC POWER-GENERATION; PHOTONIC-CRYSTAL EMITTER; ABSORBER;
D O I：
10.3390/en11092299
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
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 mu m 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 mu m to 2.1 mu m. 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.
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页数：9
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