Devizis, A., Serbenta, A., Peckus, D., Thiessen, A., Alle, R., Meerholz, K., Hertel, D. and Gulbinas, V. (2010). Electric field assisted charge carrier photogeneration in poly(spirobifluorene-co-benzothiadiazole). J. Chem. Phys., 133 (16). MELVILLE: AMER INST PHYSICS. ISSN 1089-7690
Full text not available from this repository.Abstract
The dynamics of charge carrier generation in poly (spirobifluorene-co-benzothiadiazole) was investigated by electric field-induced fluorescence quenching and differential absorption measurements. Three different time domains of carrier generation have been identified: an ultrafast phase, a subnanosecond phase, and an entire lifetime phase. The charge generation efficiencies during the first and second phases were found to be almost independent of temperature, being about 25% and 10%, respectively, at an applied electric field of 1.3 x 10(6) V/cm, while the generation efficiency during the third phase increases from 2% at 80 K to 10% at room temperature. The results of transient spectroscopy measurements and quantum chemical calculations suggest an intramolecular charge transfer for about 1 ps from the alkoxy-substituted fluorene side group to the benzothiadiazole subunit of the main chain. The formation and evolution of the resulting charge transfer states determine the way of charge carrier generation. (C) 2010 American Institute of Physics. [doi:10.1063/1.3493589]
Item Type: | Journal Article | ||||||||||||||||||||||||||||||||||||
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URN: | urn:nbn:de:hbz:38-494082 | ||||||||||||||||||||||||||||||||||||
DOI: | 10.1063/1.3493589 | ||||||||||||||||||||||||||||||||||||
Journal or Publication Title: | J. Chem. Phys. | ||||||||||||||||||||||||||||||||||||
Volume: | 133 | ||||||||||||||||||||||||||||||||||||
Number: | 16 | ||||||||||||||||||||||||||||||||||||
Date: | 2010 | ||||||||||||||||||||||||||||||||||||
Publisher: | AMER INST PHYSICS | ||||||||||||||||||||||||||||||||||||
Place of Publication: | MELVILLE | ||||||||||||||||||||||||||||||||||||
ISSN: | 1089-7690 | ||||||||||||||||||||||||||||||||||||
Language: | English | ||||||||||||||||||||||||||||||||||||
Faculty: | Unspecified | ||||||||||||||||||||||||||||||||||||
Divisions: | Unspecified | ||||||||||||||||||||||||||||||||||||
Subjects: | no entry | ||||||||||||||||||||||||||||||||||||
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URI: | http://kups.ub.uni-koeln.de/id/eprint/49408 |
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