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Broadband Thin Film Absorber Based on Plasmonic Nanoparticles

Perdana, Nanda 1
1 Institut für Theoretische Festkörperphysik (TFP), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

Harvesting solar energy presents a formidable challenge, primarily rooted in the need to capture light across a broad spectrum range efficiently. Addressing this challenge, we describe the concept of designing a broadband perfect absorber in the form of a thin-film system with plasmonic nanoparticles as its foundational basis. We study a thin-film absorber made from the scattering responses of an Au144 gold molecule. It turns out that this thin-film absorber absorbs the light in the entire visible light region quite well. As a further aspect, we employ bulk copper nanoparticles as the basis for the nanoparticle layer within the absorber. We inspect on computational grounds the effect of the nanoparticles filling factor and the thin-film thicknesses on the absorber performance. Remarkably, our findings reveal that the thin-film absorber with copper nanoparticles can absorb 90% of light energy across a broad spectrum ranging from ultraviolet to near-infrared wavelengths. To validate the accuracy of our simulations, we translate these optimized absorber layouts into fabrications together with experimental partners from the University of Kiel. ... mehr


Volltext §
DOI: 10.5445/IR/1000166021
Veröffentlicht am 10.01.2024
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Theoretische Festkörperphysik (TFP)
Publikationstyp Hochschulschrift
Publikationsdatum 10.01.2024
Sprache Englisch
Identifikator KITopen-ID: 1000166021
Verlag Karlsruher Institut für Technologie (KIT)
Umfang xiii, 83 S.
Art der Arbeit Dissertation
Fakultät Fakultät für Physik (PHYSIK)
Institut Institut für Theoretische Festkörperphysik (TFP)
Prüfungsdatum 01.12.2023
Schlagwörter Metamaterials; Nanophotonics; Plasmonics
Referent/Betreuer Rockstuhl, Carsten
Faupel, Franz
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