Abstract
In this paper, a one-dimensional multilayer is optimized for potential applications as thermophotovoltaic (TPV) selective emitter. The effect of the diffraction orders and plane of incidence on the spectral emittance of the proposed TPV emitter is calculated numerically by using the rigorous coupled-wave analysis (RCWA). The emittance spectrum of the proposed TPV selective emitter shows three close to unity emission peaks which are explained by the surface plasmon polariton (SPP), gap plasmon polariton (GPP) and magnetic polariton (MP) excitation. The strong emittance at short wavelengths occurs due to three peaks, one close to unity at 1.2μm wavelength, and two equal to unity at 0.8 and 1.59μm wavelengths. The proposed structure can be used as a selective emitter for TPV applications.
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