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Optimization Of Spectrally Selective Si/Sio2 Based Filters For Thermophotovoltaic Devices
- Publication Year :
- 2017
- Publisher :
- Aperta, 2017.
-
Abstract
- Design of a spectrally selective filter based on one-dimensional Si/SiO2 layers is considered for improved performance of thermo-photovoltaic devices. Spectrally selective filters transmit only the convertible radiation from the emitter as non-convertible radiation leads to a reduction in cell efficiency due to heating. The presented Si/SiO2 based filter concept reflects the major part of the undesired range back to the emitter to minimize energy required for the process and it is adaptable to different types of cells and emitters with different temperatures since its cut-off wavelength can be tuned. While this study mainly focuses on InGaSb based thermo-photovoltaic cell, Si, GaSb, and Ga0.78In0.22As0.19Sb0.81 based cells are also examined. Transmittance of the structure is predicted by rigorous coupled wave approach. Genetic algorithni, which is a global optimization method, is used to find the best possible filter structure by considering the overall efficiency as an objective function that is maximized. The simulations show that significant enhancement in the overall system and device efficiency is possible by using such filters with TPV devices. The methodology described in this paper allows for an improved filter design procedure for selected applications. (C) 2017 Elsevier Ltd. All rights reserved.
- Subjects :
- Materials science
02 engineering and technology
01 natural sciences
010309 optics
Optics
Optical tuning
0103 physical sciences
Transmittance
Global optimization
Spectroscopy
Common emitter
Radiation
business.industry
Si/SiO2
Filters
021001 nanoscience & nanotechnology
Atomic and Molecular Physics, and Optics
Filter design
Wavelength
Genetic algorithm
Thermophotovoltaic
Filter (video)
Spectrally selective
0210 nano-technology
business
Energy (signal processing)
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....ff09eba3ef76cb286a4bc6e1fe598466