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Nearly polarization-independent absorber consisting of metal-insulator multilayer stacks loaded with a metal patch
Author(s): Junji Yamauchi; Hiroshi Ito; Naoki Takahashi; Hisamatsu Nakano
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Paper Abstract

An ultra-broadband, nearly polarization-independent absorber is studied numerically, in which an Fe square- patch is periodically placed on Fe-SiO2 multilayer stacks. Special emphasis is placed on the determination of the patch width, since its optimum width significantly differs from that previously found in a 2D structure. A somewhat wider width leads to a broader bandwidth than that for the 2D structure. Further calculations reveal that the proposed structure operates even for oblique incidence, although the absorption gradually decreases as the angle of incidence is increased. Comparison with a different metal-insulator structure also shows that a comparable performance is obtained for Ti-Al2O3.

Paper Details

Date Published: 27 February 2019
PDF: 7 pages
Proc. SPIE 10913, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices VIII, 109131A (27 February 2019); doi: 10.1117/12.2507374
Show Author Affiliations
Junji Yamauchi, Hosei Univ. (Japan)
Hiroshi Ito, Hosei Univ. (Japan)
Naoki Takahashi, Hosei Univ. (Japan)
Hisamatsu Nakano, Hosei Univ. (Japan)

Published in SPIE Proceedings Vol. 10913:
Physics, Simulation, and Photonic Engineering of Photovoltaic Devices VIII
Alexandre Freundlich; Laurent Lombez; Masakazu Sugiyama, Editor(s)

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