2019 MRS Fall Meeting & Exhibit

Symposium EN12-Structure–Function Relationships and Interfacial Processes in Organic Semiconductors for Optoelectronics

Organic semiconductors are increasingly used in cost-efficient, lightweight and flexible devices such as thin-film transistors, light-emitting diodes and solar cells. In particular, third generation photovoltaics, based on such solution-processed semiconductors, promises to be the solution for near-future sustainable energy generation. All-organic photovoltaics (OPV) are recently attracting more and more interest due to remarkably high power conversion efficiencies (around 13%) recently obtained combined with good stability. Device optimization has naturally asked for the development of a rational understanding of the material structure-property relationships, of the photo-physical processes governing solar energy conversion and light emission, as well as of the transport properties. This knowledge, which crosses different device architectures and materials, is essential to further boost performances and to guide an intelligent material development. This symposium seeks to highlight the recent progress made in addressing the current challenges of the above-mentioned technologies with a special focus on: 1. Advances in materials design, emphasizing the importance of synthetic chemistry in tuning the material properties to obtain the desired functionality. 2. Developments on linking material processing, film morphology, local organization and optoelectronic properties. 3. Understanding of photophysical processes in the active layer (exciton/charge dynamics) or at materials interfaces at various length and time scales, accompanied by an in-depth computational analysis. 4. Insights in device function, with a special attention to device interfaces, fundamental processes therein and their stability. The interdisciplinary character of the topics, ranging from material science, physical chemistry, to device engineering will attract broad academic interest, with the final aim to advance our fundamental knowledge and close the gap of new generation semiconductor commercialization.

Topics will include:

  • Materials development (polymer and molecular donors, non-fullerene acceptors)
  • Relationships between processing and thin film/material structure.
  • Interplay between film morphology, optoelectronic properties, charge transport, material physics and device performance
  • Use of doped organic semiconductors as device interlayers and conductive electrodes
  • Processes in organic bioelectronics.
  • Ultrafast photoinduced processes: exciton dynamics, light emission, charge generation and recombination
  • Understanding of photoinduced processes at the nanometer scale in inhomogeneous thin films
  • Transport in organic semiconductors
  • Link between chemical structure, interfaces and stability
  • Engineering, properties and processes at device interfaces and role of hole/electron transport materials

Invited Speakers:

  • Antonio Facchetti (Flexterra, Inc., USA)
  • Sabine Ludwigs (University of Stuttgart, Germany)
  • Kevin Sivula (École Polytechnique Fédérale de Lausanne, Switzerland)
  • Ana Flavia Nogueira (University of Campinas, Brazil)
  • Paul Meredith (Swansea University, United Kingdom)
  • Jonathan Rivnay (Northwestern University, USA)
  • Harald Ade (North Carolina State University, USA)
  • Aram Amassian (KAUST Solar Center, Saudi Arabia)
  • Laure Biniek (French National Centre for Scientific Research, France)
  • Francesca Brunetti (University of Rome Tor Vergata, Italy)
  • Marina Freitag (Uppsala University, Sweden)
  • Benjamin Grévin (CNRS, Institut Nanosciences et Cryogénie, France)
  • Nicolas Leclerc (French National Centre for Scientific Research, France)
  • Monica Lira-Cantu (Catalan Institute of Nanoscience and Nanotechnology, Spain)
  • Jenny Nelson (Imperial College, United Kingdom)
  • Thuc-Quien Nguyen (UC Santa Barbara, USA)
  • Elizabeth von Hauff (VU Amsterdam, Netherlands)
  • Guillaume Wantz (University of Bordeaux Bordeaux Institute of Technology, France)

Symposium Organizers

Giulia Grancini
University of Pavia
Department of Chemistry

Natalie Banerji
University of Bern

Renaud Demadrille
Commissariat a l'energie atomique et aux energies alternatives

Natalie Stingelin
Georgia Institute of Technology
School of Chemical and Biomolecular Engineering

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