Light Transmission Through One-Dimensional Photonic Crystal Filters for Thermophotovoltaic Applications
Faustin Hilaire Tchoffo,
Fabrice Kwefeu Mbakop,
Jean Luc Dit Bouerdjila Nsouandele,
Noel Djongyang
Issue:
Volume 8, Issue 1, June 2022
Pages:
1-10
Received:
19 May 2022
Accepted:
17 June 2022
Published:
5 July 2022
DOI:
10.11648/j.jmpt.20220801.11
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Abstract: In this paper, three photonic crystals (TiO2/SiO2, TiO2/MgF2, TiO2/PbF2) one-dimensional (1D-PhCs) with defect layers are designed for possible use as a thermophotovoltaic optical filter (TPV). The temperature of this system is 2000 K. Wien's first law predicts the temperature and permissible wavelengths for TPV systems. It is therefore very important to filter it out of the infrared. The transfer matrix approach (TMM) was used to investigate the influence of the number of periods, the varied short refractive indices (L) of the defect layers, and the angle of incidence on the spectral transmission peak. When the number of layers is varied from 6, 8 and 10, there is an optical improvement in the properties of the spectral filter which tends towards 100% as the number of layers increases. The central wavelength is fixed at 1550nm and allows us to have the peak transmission of light. This transmission is created by a coupling of surface waves. The light does not cross the bandwidth of the crystal when the frequency is in the odd parts and there is a peak transmission of 100%. However, the structure that shows the best match of the transmission peak as the angle varies is the TiO2/SiO2 structure. Unlike the other structures (TiO2/MgF2, TiO2/PbF2) where all the peaks do not reach 100% despite the variations in the angles of incidence and types of polarization. Moreover, in the TiO2/SiO2 structure all the peaks are at 100% of their transmission whatever the polarization mode and the type of angle chosen.
Abstract: In this paper, three photonic crystals (TiO2/SiO2, TiO2/MgF2, TiO2/PbF2) one-dimensional (1D-PhCs) with defect layers are designed for possible use as a thermophotovoltaic optical filter (TPV). The temperature of this system is 2000 K. Wien's first law predicts the temperature and permissible wavelengths for TPV systems. It is therefore very import...
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