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Optoelectronic Materials Section

Research overview

Laurens Siebbeles Group

We use spectroscopy and theory to investigate the nature and dynamics of electronic excited states (excitons) and charge carriers in materials with potential applications in e.g. solar cells, photodiodes, light-emitting diodes, field-effect transistors and nanoscale molecular electronics. Other PIs in the Section are Arjan Houtepen, Tom Savenije and Ferdinand Grozema. Further we collaborate with numerous academic and industrial (Toyota) partners world-wide.

Materials. We study semiconductor quantum dots, nanorods, nanosheets, two-dimensional layered materials and organic materials. We intend to extend our research to photogenerated excitons and charge carriers in topological insulators.

Spectroscopy. Charges and excitons are produced by (ultra)short laser or high-energy electron pulses, and detected by time-resolved optical and microwave or terahertz conductivity techniques. The world-wide unique combination of techniques allows us to monitor the formation, mobility and decay of excitons and charge carriers from the sub-picosecond to the millisecond time domain.

Theory.The experimental research is supported by theoretical calculations of charge and exciton dynamics. We calculate electronic band structures using density functional theory and GW calculations. Properties of excitons are calculated by solving the Bethe Salpeter equation. We use e.g. the Amsterdam Modeling Suite (www.scm.com) and GPAW (wiki.fysik.dtu.dk/gpaw).  The mutual interactions, motion and decay of excitons and charges is studied by analytical theory and numerical (Monte Carlo) simulations.

Prof.dr. Laurens D.A. Siebbeles

Delft University of Technology

Building 58
D1.220
Van der Maasweg 9
2629 HZ Delft
The Netherlands


Tel: +31 (0)15 2781800
E-mail: l.d.a.siebbeles@tudelft.nl
Website: Laurens Siebbeles (tudelft.nl)

  • Amsterdam (UvA)
    • AMOLF
    • Van t' Hoff Institute for Molecular Sciences
    • Institute for Lasers, Life and Biophotonics Amsterdam (LaserLaB)
  • Breda (Avans Hogeschool)
    • MNEXT
    • Nieuwe Materialen en hun Toepassing
  • Delft (TUD)
    • Optoelectronic Materials Section
    • Novel Aerospace Materials
    • Aerospace Manufacturing Technologies
    • Advanced Soft Matter
  • Eindhoven (TU/e)
    • Theory of Polymers and Soft Matter
    • Supramolecular Polymer Chemistry
    • Physical Chemistry
    • Stimuli-Responsive Functional Materials and Devices
    • Polymer Technology
    • Polymer Performance Materials
    • Bio-Organic Chemistry
  • Eindhoven (Fontys Hogeschool)
  • Emmen (NHL Stenden Hogeschool)
  • Enschede (Hogeschool Saxion)
    • ThermoPlastic composites Application Center
    • Lectoraat Sustainable & Functional Textiles
  • Enschede (UT)
    • Biomaterials Science and Technology
    • Membrane Surface Science
    • Films in Fluids
    • Molecular NanoFabrication
    • Sustainable Polymer Chemistry (SPC)
  • Groningen (RUG)
    • Macromolecular Chemistry and New Polymeric Materials
    • Polymer Physics/Physical Chemistry of Polymer Systems
    • Bio-Inspired Synthetic Materials Science
    • Organic-Materials Chemistry and Devices
    • Polymer Science
    • Product Technology
  • Groningen (Hanzehogeschool)
  • Heerlen (Zuyd Hogeschool)
  • Maastricht (UM)
    • Aachen-Maastricht Institute for Biobased Materials
    • Sustainable Polymer Synthesis group
    • Polymer Physics and Technology
    • Polymer Engineering
  • Nijmegen (RU)
    • Systems Chemistry
    • Bone Biochemistry
  • Utrecht (UU)
    • Advanced Drug Delivery and Drug Targeting
    • Debye Institute for Nanomaterials Science
    • Condensed-Matter Theory, Statistical and Computational Physics (Institute for Theoretical Physics)
  • Wageningen (WUR)
    • Organic Chemistry
    • Physical Chemistry and Soft Matter 1
    • Physical Chemistry and Soft Matter 2
    • Physical Chemistry and Soft Matter 3
    • Molecular Surface Engineering
  • Zwolle (Hogeschool Windesheim)
  • Bestuur
  • Polymeerprijs
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    • Winnaars
  • Polymeren in Nederland
    • Amsterdam (UvA)
    • Breda (Avans Hogeschool)
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    • Eindhoven (Fontys Hogeschool)
    • Emmen (NHL Stenden Hogeschool)
    • Enschede (Hogeschool Saxion)
    • Enschede (UT)
    • Groningen (RUG)
    • Groningen (Hanzehogeschool)
    • Heerlen (Zuyd Hogeschool)
    • Maastricht (UM)
    • Nijmegen (RU)
    • Utrecht (UU)
    • Wageningen (WUR)
    • Zwolle (Hogeschool Windesheim)
  • Agenda
  • Links
    • EPF European Polymer Congress 2025
    • KNCV Eye-openers
    • Dutch Polymer Institute
    • European Polymer Federation
    • e-polymers Journal
    • National Dutch Graduate School of Polymer Science and Technology (PTN)
    • Netherlands Organization for Scientific Research (NWO)
    • Belgian Polymer Group
    • Society of Polymer Science, Japan
    • The Italian Association of Science and Technology of Macromolecules (AIM)
    • Federatie Nederlandse Rubber– en Kunststofindustrie (NRK)
  • Lid worden
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