Increased open-circuit voltage of organic solar cells by reduced donor-acceptor interface area

Advanced Materials 26:23 (2014) 3839-3843

Authors:

K Vandewal, J Widmer, T Heumueller, CJ Brabec, MD McGehee, K Leo, M Riede, A Salleo

Abstract:

The charge carrier lifetime in small molecule: C60 photovoltaic devices is increased by reducing the physical interface area availabe for recombination. For donor contents below 10%, the gain in open-circuit voltage (Voc) depends logarithmically on the interface area while the energy of the interfacial charge-transfer state ECT remains invariant. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Coevaporated calcium‐silver metal alloys as contact for highly transparent organic solar cells

Energy Science & Engineering Wiley 2:2 (2014) 77-85

Authors:

Jan Meiss, Hannah Ziehlke, Sylvio Schubert, Karl Leo, Moritz Riede

Increased Open‐Circuit Voltage of Organic Solar Cells by Reduced Donor‐Acceptor Interface Area

Advanced Materials Wiley 26:23 (2014) 3839-3843

Authors:

Koen Vandewal, Johannes Widmer, Thomas Heumueller, Christoph J Brabec, Michael D McGehee, Karl Leo, Moritz Riede, Alberto Salleo

Correlation between Temperature Activation of Charge‐Carrier Generation Efficiency and Hole Mobility in Small‐Molecule Donor Materials

ChemPhysChem Wiley 15:6 (2014) 1049-1055

Authors:

Christian Koerner, Moritz Philipp Hein, Vaidotas Kažukauskas, Andrius Sakavičius, Vytautas Janonis, Roland Fitzner, Peter Bäuerle, Karl Leo, Moritz Riede

Built-in voltage of organic bulk heterojuction p-i-n solar cells measured by electroabsorption spectroscopy

AIP Advances AIP Publishing 4:4 (2014) 047134

Authors:

E Siebert-Henze, VG Lyssenko, J Fischer, M Tietze, R Brueckner, M Schwarze, K Vandewal, D Ray, M Riede, K Leo