Microstructure and Electronic Disorder in Organic Solar Cells

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Name of the Speaker: Prof. Moritz Riede, University of Oxford, UK
Venue/Online meeting link: ESB-244 (Seminar Hall)
Date/Time: 12th December 2022 (MON), 3.00 PM

The microstructure of thin films of organic semiconductors can significantly affect the whole range of optoelectronic processes, from light absorption to the generation of free charge carriers, their transport as well as recombination. Thus, understanding and being able to tune this microstructure along with being able to measure its role in the energetic disorder is a critical step towards the commercialisation in organic optoelectronic devices such as thin-film transistors and organic solar cells (OSC). In the first part of this presentation, we report research on the development of the thin film microstructure in-situ during vacuum deposition of a-6T and ZnPc, two prototypical materials for OSC, using grazing incidence wide and small angle scattering (GIWAXS/GISAXS).