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Improvement of the poly-3-hexylthiophene transistor performance using small molecule contact functionalization
Rebecca Winter, Maria S Hammer, Carsten Deibel +1
We demonstrate an approach to improve poly-3-hexylthiophene field effect transistors by modifying the gold contacts with monolayer thick pentacenequinone (PQ) or naphthalene (NL).…
Origin of the Efficient Polaron Pair Dissociation in Polymer--Fullerene Blends
C. Deibel, T. Strobel, V. Dyakonov
The separation of photogenerated polaron pairs in organic bulk heterojunction solar cells is the intermediate but crucial step between exciton dissociation and charge transport to…
Polaron Recombination in Pristine and Annealed Bulk Heterojunction Solar Cells
C. Deibel, A. Baumann, A. Wagenpfahl +1
The major loss mechanism of photogenerated polarons was investigated in P3HT:PCBM solar cells by the photo-CELIV technique. For pristine and annealed devices, we find that the expe…
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…
Charge Carrier Dissociation and Recombination in Polymer Solar Cells
C. Deibel
In polymer:fullerene solar cells, the origin of the losses in the field-dependent photocurrent is still controversially debated. We contribute to the ongoing discussion by performi…
Charge Carrier Concentration and Temperature Dependent Recombination in Polymer Fullerene Solar Cells
A. Foertig, A. Baumann, D. Rauh +2
We performed temperature dependent transient photovoltage and photocurrent measurements on poly(3-hexylthiophene):[6,6]-phenyl-C61 butyric acid methylester bulk heterojuction solar…