Symposium EM01—Organic Semiconductors—Surface, Interface, Bulk Doping and Charge Transport

Doping inorganic semiconductors allows tuning their electrical properties to application-specific demands, therewith forming the basis for the intriguing multitude of microelectronic devices in today’s information society. Particularly for opto-electronic applications, organic semiconductors (OSCs), that is, conjugated organic molecules and conjugated polymers, have emerged as valuable alternative for low-cost, large-area processing on flexible substrates owing to the ease of band gap engineering through their intrinsic chemical variability. For organic electronics, however, the high potential of electrical doping for improving device performance and enabling novel functionality has only recently been established, with the majority of present applications being still based on intrinsic OSCs. This is mainly due to the fact that, in contrast to inorganic semiconductor doping, the doping efficiency of OSCs remains conspicuously low, which highlights that the underlying fundamental mechanisms still are not well understood compared to their inorganic counterparts. Moreover, limited processability and control over the microstructure of doped films, as well as the intrinsic chemical instability of molecular (n-)dopants represent practical hurdles that still preclude resounding success in applications.

The present symposium aims at stimulating an interdisciplinary discourse on the molecular electrical doping of OSCs by bringing together current theoretical and experimental viewpoints from physics, chemistry, and materials science on both doping fundamentals and its practical realization in organic electronics.

Topics will include:

  • Fundamental mechanisms of bulk and interface doping
  • Charge-transfer processes at organic and hybrid heterojunctions
  • Structural, optical, electronic, and thermoelectric properties of doped organic semiconductors
  • Anisotropy in doped organic semiconductor systems
  • Phase behavior of molecular dopants and doped organic semiconductors
  • Thin film and bulk processing of organic semiconductor/dopant systems
  • Advanced processing techniques of doped organic semiconductor films
  • Peculiarities in the doping of conjugated organic molecules and polymers
  • Exploiting molecular doping in (opto-)electronic devices
  • Design rules for more efficient molecular dopants
  • Pathways for increasing the chemical stability of molecular dopants
  • Synthesis of novel doping agents
  • Charge transport in organic semiconductor films

Invited Speakers:

  • Thomas Anthopoulos (King Abdullah University of Science & Technology (KAUST), Saudi Arabia)
  • Stephen Barlow (Georgia Institute of Technology, USA)
  • Lay Lay Chua (National University of Singapore, Singapore)
  • Steffen Duhm (Soochow University - FUNSOM, China)
  • Antonio Facchetti (Northwestern University, Polyera, USA)
  • Elizabeth von Hauff (Vrije Universiteit Amsterdam, Netherlands)
  • Oana Jurchescu (Wake Forest University, USA)
  • Antoine Kahn (Princeton University, USA)
  • Martijn Kemerink (Linköping University, Sweden)
  • Eung-Gun Kim (Dankook University, Republic of Korea)
  • Bernard Kippelen (Georgia Institute of Technology, USA)
  • Norbert Koch (Humboldt-Universität zu Berlin, Germany)
  • Karl Leo (Technische Universität Dresden, Germany)
  • Hatsumi Mori (University of Tokyo, Japan)
  • Adam Moule (University of California, Davis, USA)
  • Dieter Neher (Potsdam University, Germany)
  • Yabing Qi (Okinawa Institute of Science and Technology, Japan)
  • Erin Ratcliff (University of Arizona, USA)
  • Alberto Salleo (Stanford University, USA)
  • Rachel Segalman (University of California, Santa Barbara, USA)
  • Henning Sirringhaus (University of Cambridge, United Kingdom)
  • Henry Snaith (University of Oxford, United Kingdom)
  • Nobuo Ueno (Chiba University, Japan)

Symposium Organizers

Ingo Salzmann
Humboldt-Universität zu Berlin
Department of Physics

Jean-Luc Brédas
Georgia Institute of Technology
School of Chemistry and Biochemistry

Seth Marder
Georgia Institute of Technology
School of Chemistry and Biochemistry

Christian Müller
Chalmers University of Technology
Chemistry and Chemical Engineering

Thuc-Quyen Nguyen
University of California, Santa Barbara
Department of Chemistry and Biochemistry

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