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Title: On the Role of Bathocuproine in Organic Photovoltaic Cells
Authors: Gommans, Hans ×
Verreet, Bregt
Rand, Barry P
Muller, Robert
Poortmans, Jef
Heremans, Paul
Genoe, Jan #
Issue Date: Nov-2008
Publisher: Wiley-v c h verlag gmbh
Series Title: Advanced Functional Materials vol:18 issue:22 pages:3686-3691
Abstract: The effect of bathocuproine (BCP) on the optical and electrical properties of organic planar heterojunction photovoltaic cells is quantified by current-voltage characterization under 1 sun AM 1.5D simulated solar illumination and spectral response at short-circuit conditions. By inserting a 10 nm BCP layer in an indium tin oxide (ITO)/subphthalocyanine (SubPc)/buckminsterfullerene (C-60)/BCP/Al thin-film structure, an increase in power-con version efficiency from 0.05 to 3.0% is observed, mostly reflected in the enhanced open-circuit voltage up to 920 mV. Furthermore, the incorporation of a 10-nm BCP layer in an ITO/C-60/BCP/Al structure leads to an increase in built-in potential from 250 to 850 mV, as demonstrated by electroabsorption. It is argued that BCP passivates C-60 Such that a 10-nm layer provides a sufficient buffer layer that prohibits Al contacting the C-60 where it would otherwise create donor states.
ISSN: 1616-301X
Publication status: published
KU Leuven publication type: IT
Appears in Collections:ESAT - MICAS, Microelectronics and Sensors
Associated Section of ESAT - INSYS, Integrated Systems
Electrical Engineering (ESAT) TC, Technology Campus Diepenbeek
Technologiecluster ESAT Elektrotechnische Engineering
× corresponding author
# (joint) last author

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