Natalie Stingelin, Imperial College London

Phase Diagrammes of Complex Materials: From the Katana, Swiss Chocolates to Organic Semiconductors

The physical organisation from the molecular- to the macro-scale of essentially all materials can profoundly affect the properties and features of the resulting architectures. I will discuss that by employing rules that explain the mechanical properties of the Katana and the difference between the experience of eating delicious confectionery and less tasty chocolate bars, one can establish guidelines how to manipulate the properties of organic semiconductors and, hence, their performance when used as active layers in organic optoelectronic devices, including organic thin-film field-effect transistors, organic light-emitting diodes or organic photovoltaic cells.  Some principles of structure development from the liquid phase of this interesting and broad class of materials will be given with focus on how to manipulate their phase transformations and solid-state order to tailor and manipulate the final ‘morphology’ towards technological and practical applications. We will discuss blending, nucleation and use of processing aids to control the microstructure targeted for plastic electronic applications.

Cette conférence s'adresse à tous, y compris les professeurs, les chercheurs et les étudiants des trois cycles.

Le café est servi à partir de 11h20.