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Proceedings Paper

Multilayer structures with highly directional absorptivity for solar thermophotovoltaics
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Paper Abstract

We explore an approach to enhance the efficiency of solar cells using photonic nanostructures for solar ther-mophotovoltaics. Our focus is on designing photonic nanostructures that can provide broadband absorption in a narrow angular range for solar thermophotovoltaic systems which do not employ sunlight concentration. We consider structures consisting of an aperiodic multilayer stack of alternating layers of silicon and silica on top of a thick tungsten layer. The layer thicknesses are optimized to maximize the angular selectivity in the absorp-tivity for both TE and TM polarizations. Using such an approach, we design structures with highly directional absorptivity for both polarizations.

Paper Details

Date Published: 25 September 2013
PDF: 8 pages
Proc. SPIE 8824, Next Generation (Nano) Photonic and Cell Technologies for Solar Energy Conversion IV, 88240M (25 September 2013); doi: 10.1117/12.2024773
Show Author Affiliations
Christopher H. Granier, Louisiana State Univ. (United States)
Francis O. Afzal, Louisiana State Univ. (United States)
Truman State Univ. (United States)
Georgios Veronis, Louisiana State Univ. (United States)
Jonathan P. Dowling, Louisiana State Univ. (United States)


Published in SPIE Proceedings Vol. 8824:
Next Generation (Nano) Photonic and Cell Technologies for Solar Energy Conversion IV
Oleg V. Sulima; Gavin Conibeer, Editor(s)

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