TY - GEN
T1 - Ultra-black Pythagorean-tree metasurface antenna array based absorber and emitter for applications in solar thermophotovoltaics
AU - Ijaz, Sumbel
AU - Rana, Ahsan Sarwar
AU - Zubair, Muhammad
AU - Mehmood, Muhammad Qasim
N1 - Generated from Scopus record by KAUST IRTS on 2023-09-20
PY - 2021/1/1
Y1 - 2021/1/1
N2 - 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.
AB - 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.
UR - https://ieeexplore.ieee.org/document/9678245/
UR - http://www.scopus.com/inward/record.url?scp=85125336213&partnerID=8YFLogxK
U2 - 10.1109/ICMAC54080.2021.9678245
DO - 10.1109/ICMAC54080.2021.9678245
M3 - Conference contribution
SN - 9781665400862
BT - 2021 1st International Conference on Microwave, Antennas and Circuits, ICMAC 2021
PB - Institute of Electrical and Electronics Engineers Inc.
ER -
