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URN: urn:nbn:de:swb:90-494427

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

Mescher, Jan; Mertens, Adrian; Egel, Amos; Kettlitz, Siegfried W.; Lemmer, Uli; Colsmann, Alexander

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.

Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Lichttechnisches Institut (LTI)
Publikationstyp Zeitschriftenaufsatz
Jahr 2015
Sprache Englisch
Identifikator ISSN: 2158-3226
KITopen ID: 1000049442
HGF-Programm 43.22.03; LK 01
Erschienen in AIP Advances
Band 5
Heft 7
Seiten 077188/1-6
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagworte ight interference; Solar power generation
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