Ultra-black Pythagorean-tree metasurface antenna array based absorber and emitter for applications in solar thermophotovoltaics

Sumbel Ijaz, Ahsan Sarwar Rana, Muhammad Zubair, Muhammad Qasim Mehmood

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

High temperature tolerance is a crucial need for solar thermal applications. A polarization-insensitive and wide-angle, broadband metasurface absorber and narrowband emitter for solar thermal photovoltaic (STPV) system, which is highly thermally robust, is presented for energy harvesting applications. The absorber has near-unity absorption in visible and near-infrared regions with low emission at longer wavelengths. The STPV systems intend to bar the Shockley-Queisser limit of the conversion efficiency of the PV cell. The presented absorber is a subwavelength refractory plasmonic structure consisting of three layers with top and bottom layers made up of a transition metal nitride (ZrN). It is thermally and chemically stable with a melting point of 3253 K. The impedance of the simulated device matches that of the free space at resonance wavelength, and it has 93.47% average absorption in 400 - 800 nm range. The STPV absorber efficiency (ηabs) of the design presented is 65.42% for blackbody radiation at 5778 K and 65.35% for AM 1.5 spectrum. The emitter exhibits spectral selective behavior to efficiently couple the energy to solar cell and matches the bandgaps of GaInAs, GaAs, and GaInP solar cells (BGs: 1.05 eV, 1.42 eV and 1.85 eV, respectively), with emittance values of 99.05%, 99.57% and 94.78 %, respectively, depending upon dimensions.
Original languageEnglish (US)
Title of host publication2021 1st International Conference on Microwave, Antennas and Circuits, ICMAC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781665400862
DOIs
StatePublished - Jan 1 2021
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-20

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