KIT | KIT-Bibliothek | Impressum | Datenschutz

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.

Open Access Logo

Volltext §
DOI: 10.5445/IR/1000049442
DOI: 10.1063/1.4928074
Zitationen: 14
Web of Science
Zitationen: 14
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Lichttechnisches Institut (LTI)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2015
Sprache Englisch
Identifikator ISSN: 2158-3226
KITopen-ID: 1000049442
HGF-Programm 43.22.03 (POF III, LK 01)
Printed Materials and Systems
Erschienen in AIP Advances
Band 5
Heft 7
Seiten 077188/1-6
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagwörter ight interference; Solar power generation
Nachgewiesen in Web of Science
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page