期刊
OPTICS EXPRESS
卷 23, 期 24, 页码 30681-30694出版社
Optica Publishing Group
DOI: 10.1364/OE.23.030681
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资金
- National Natural Science Foundation of China (NSFC) [51136004]
A 2D pyramidal metamaterial-based nano-structure is proposed as a wavelength-selective Thermophotovoltaic (TPV) emitter. Rigorous coupled-wave analysis complemented with normal field method is used to predict the emittance as well as the electromagnetic field and Poynting vector distributions. The proposed emitter is shown to be wavelengthselective, polarization-insensitive, and direction-insensitive in emittance. The mechanisms supporting the emittance close to 1.0 in the wavelength range of 0.3-2.0 mu m are elucidated by the distribution of electromagnetic field and Poynting vectors in the proposed structure. Finally, thermal stability and radiant heat-to-electricity TPV efficiency for a realistic InGaAsSb TPV system are discussed. (C) 2015 Optical Society of America
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