SKM 2021 – wissenschaftliches Programm

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SYAW: Awards Symposium

SYAW 1: Prize Talks

SYAW 1.1: Preisträgervortrag

Mittwoch, 29. September 2021, 13:30–14:00, Audimax 1

Organic semiconductors - materials for today and tomorrow — •Anna Köhler — Universität Bayreuth, 95448 Bayreuth — Laureate of the Max-Born-Prize 2020

Even though organic semiconductors are a firm part of our daily life, e.g. as displays in mobile phones and as photoconductors in every photocopier, many aspects of their semiconducting nature are still scientifically challenging. To allow for future, advanced applications, such as flexible solar cells, bioelectronic sensors or coated electrotextiles, we need a deeper appreciation of their optoelectronic properties. In this talk I want to introduce what makes up the optical and electronic properties of this class of semiconductors, what determines how they work, and how do they differ from inorganic semiconductors. I will focus on particular how quantum size effects impact on (i) the binding energy of excitons and how this can be overcome for solar cell applications, and (ii) the magnitude of the exchange energy between singlet and triplet states and illustrate approaches to employ this for display applications.