343 citations · 1.3k across the 9 of their papers we have counts for
9 papers
Spin-chemistry concepts for spintronics scientists
Konstantin L. Ivanov, Alexander Wagenpfahl, Carsten Deibel +1
Spin chemistry and spintronics developed independently and with different terminology. Until now, the interaction between the two fields has been very limited. In this review, we c…
Nongeminate Recombination in Planar and Bulk Heterojunction Organic Solar Cells
A. Foertig, A. Wagenpfahl, T. Gerbich +3
We investigate nongeminate recombination in organic solar cells based on copper phthalocyanine (CuPc) and C. Two device architectures, the planar heterojunction (PHJ) and th…
Relation of open circuit voltage to charge carrier density in organic bulk heterojunction solar cells
Daniel Rauh, Alexander Wagenpfahl, Carsten Deibel +1
The open circuit voltage Voc and the corresponding charge carrier density were measured in dependence of temperature and illumination intensity by current-voltage and charge extrac…
Oxygen doping of P3HT:PCBM blends: Influence on trap states, charge carrier mobility and solar cell performance
Julia Schafferhans, Andreas Baumann, Alexander Wagenpfahl +2
We investigated the influence of oxygen on the performance of P3HT:PCBM (poly(3-hexylthiophene):[6,6]-phenyl C61 butyric acid methyl ester) solar cells by current--voltage, thermal…
Comment on "Interface state recombination in organic solar cells"
C. Deibel, A. Wagenpfahl
In a recent paper, Street et al. [Phys. Rev. B 81, 205307 (2010)] propose first order recombination due to interface states to be the dominant loss mechanism in organic bulk hetero…
S-shaped current-voltage characteristics of organic solar devices
A. Wagenpfahl, D. Rauh, M. Binder +2
Measuring the current-voltage characteristic of organic bulk heterojunction solar devices sometimes reveals an s-shaped deformation. We qualitatively produce this behaviour by a nu…
Investigation of the Photocurrent in Bulk Heterojunction Solar Cells
M. Limpinsel, A. Wagenpfahl, M. Mingebach +2
We investigated the photocurrent in poly(3-hexylthiophene-2,5-diyl) (P3HT):[6,6]-phenyl-C butyric acid methyl ester (PCBM) solar cells by applying a pulsed measurement techn…
Origin of Reduced Polaron Recombination in Organic Semiconductor Devices
C. Deibel, A. Wagenpfahl, V. Dyakonov
We propose a model to explain the reduced bimolecular recombination rate found in state-of-the-art bulk heterojunction solar cells. When compared to the Langevin recombination, the…
Influence of Charge Carrier Mobility on the Performance of Organic Solar Cells
C. Deibel, A. Wagenpfahl, V. Dyakonov
The power conversion efficiency of organic solar cells based on donor--acceptor blends is governed by an interplay of polaron pair dissociation and bimolecular polaron recombinatio…