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Illumination angle and layer thickness influence on the photo current generation in organic solar cells: A combined simulative and experimental study

Mescher, Jan 1; Mertens, Adrian 1; Egel, Amos 1; Kettlitz, Siegfried W. 1; Lemmer, Uli 1,2; Colsmann, Alexander ORCID iD icon 1
1 Lichttechnisches Institut (LTI), Karlsruher Institut für Technologie (KIT)
2 Institut für Mikrostrukturtechnik (IMT), Karlsruher Institut für Technologie (KIT)

Abstract:

In most future organic photovoltaic applications, such as fixed roof installations, facade or clothing integration, the solar cells will face the sun under varying angles. By a combined simulative and experimental study, we investigate the mutual interdependencies of the angle of light incidence, the absorber layer thickness and the photon harvesting efficiency within a typical organic photovoltaic device. For thin absorber layers, we find a steady decrease of the effective photocurrent towards increasing angles. For 90-140 nm thick absorber layers, however, we observe an effective photocurrent enhancement, exhibiting a maximum yield at angles of incidence of about 50°. Both effects mainly originate from the angle-dependent spatial broadening of the optical interference pattern inside the solar cell and a shift of the absorption maximum away from the metal electrode.


Volltext §
DOI: 10.5445/IR/1000049442
Originalveröffentlichung
DOI: 10.1063/1.4928074
Scopus
Zitationen: 17
Web of Science
Zitationen: 15
Dimensions
Zitationen: 16
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Universität Karlsruhe (TH) – Interfakultative Einrichtungen (Interfakultative Einrichtungen)
Karlsruhe School of Optics & Photonics (KSOP)
Lichttechnisches Institut (LTI)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2015
Sprache Englisch
Identifikator ISSN: 2158-3226
urn:nbn:de:swb:90-494427
KITopen-ID: 1000049442
HGF-Programm 43.22.03 (POF III, LK 01) Printed Materials and Systems
Erschienen in AIP Advances
Verlag American Institute of Physics (AIP)
Band 5
Heft 7
Seiten 077188/1-6
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagwörter ight interference; Solar power generation
Nachgewiesen in Scopus
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Web of Science
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