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Charge transfer in conjugated materials and at interfaces thereof in dynamic and static descriptions

Wojciech Osikowicz ,  Michel P. De Jong ,  Slawomir Braun ,  Mats Fahlman ,  William R. Salaneck 

Department of Physics, Chemistry and Biology, Linköping University, Linköping 58183, Sweden


X-ray absorption and photoelectron spectroscopy has been used to investigate charge transfer processes in conjugated materials and across their organic-organic as well as hybrid interfaces. The dynamics of a charge transfer is probed using resonant photoemission spectroscopy in combination with core-holoe-clock principle. The results show orbital-specific femtosecond charge transfer across specific interfaces as well as in between conjugated units. On the other hand photoelectron spectroscopy applied to the energy level alignment studies at various hybrid and organic-organic interfaces provides information on the charge exchange at equilibrium. For many interfaces that are of industrial importance the charge transfer is restricted to much slower tunneling processes and is limited to transfer of complete charges.


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Presentation: Invited at E-MRS Fall Meeting 2007, Symposium I, by Wojciech Osikowicz
See On-line Journal of E-MRS Fall Meeting 2007

Submitted: 2007-05-04 11:12
Revised:   2009-06-07 00:44