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Charge transport in organic semiconductors: influence of processing and doping

Organic semiconductors facilitate a wide range of opto-electronic applications as solar cells, light emitting diodes, thin-film transistors, sensors, and thermoelectrics. The concentration and mobility of charge carriers in these materials are known to critically influence the device performance.


This symposium aims to bring together key researchers in this field to discuss their novel concepts and approaches with regard to the interplay between materials/device processing, molecular doping, device structure and charge transport, which must be mastered in order to enable widespread use of organic semiconductor-based opto-electronics.

The ability of charge carriers to flow through organic semiconductors strongly depends on its nano- and microstructure, which in turn is defined by the thermodynamics and kinetics encountered during its processing. Further, for many applications it is vital to tune the charge carrier concentration through molecular, or other forms of extrinsic doping. In order to advance the opto-electronic performance of organic semiconductors, and hence the overall performance of the resulting devices, it is crucial to develop effective processing schemes that lead to both optimal nano- and microstructures as well as efficient extrinsic doping.

Despite the tremendous progress on the development of new high-performance materials, device architectures and effective manufacturing methods, great challenges still remain and will need to be addressed in order to fully exploit the potential of organic opto-electronics. These key challenges include (1) the precise control of nano- and microstructures, (2) a fundamental understanding of the various doping mechanisms demonstrated to date, (3) processing schemes that simultaneously grant leverage over nanostructure formation and doping, and (4) the long-term stability of (extrinsically doped) materials and devices.

Hot topics to be covered by the symposium:

  • structure-processing-property relationships of organic semiconductors (incl. conjugated molecules, polymers)
  • synthesis and processing of organic semiconductors and dopants
  • n-type dopants
  • phase behavior of organic semiconductor systems
  • large-area coating/printing and patterning techniques
  • optimization of nanostructures at interfaces
  • alignment techniques and anisotropic charge transport
  • in-situ and/or real-time characterization
  • charge transport and modelling in intrinsic and doped molecular systems
  • thermoelectric properties
  • environmental and operational stability of organic devices

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Symposium organizers
Argiris LASKARAKISAristotle University of Thessaloniki

Department of Physics, University Campus, 54124, Thessaloniki, Greece

Christian MÜLLERChalmers University of Technology

Department of Chemical and Biological Engineering, Göteborg, Sweden
Martin HEENEYImperial College London

Dept. Chemistry, Exhibition Rd, London, SW7 2AZ, U.K.

+44 (0) 20 7594 1248
Oana D. JURCHESCUWake Forest University

Dept. of Physics, 1834 Wake Forest Rd, Winston-Salem, NC 27109, USA

+1 336 758 4407