Controlling the nanostructure of organic solar cell materials
Eva M. Herzig a
a Dynamics and Structure Formation - Herzig Group, University of Bayreuth, Germany, Universitätsstraße, 30, Bayreuth, Germany
Materials for Sustainable Development Conference (MATSUS)
Proceedings of Materials for Sustainable Development Conference (MAT-SUS) (NFM22)
#BRIGHT - Recent Breakthroughs in Organic Photovoltaics
Barcelona, Spain, 2022 October 24th - 28th
Organizers: Thomas Anthopoulos and Safa Shoaee
Invited Speaker, Eva M. Herzig, presentation 228
DOI: https://doi.org/10.29363/nanoge.nfm.2022.228
Publication date: 11th July 2022

Nanostructure plays an important role in organic active layers for solar cell applications. The way in which individual material components are arranged with respect to each other is decisive for electronic transport properties and hence for device performance.

In many of these material systems, we have nanostructures that are arrested out-of-equilibrium during a fast processing quench. Therefore the route for structure formation, the provision of energy to the system in form of light and heat or other external stimuli like electric fields [1] can induce structural changes during processing and in the final solar cell [2]. Systematically examining these structural changes as a function of the environmental parameters helps us to identify options for the improvement of structural quality necessary for optimized electronic properties. Using time-resolved optical in-situ investigations as well as x-ray scattering experiments we investigate the quality of nanostructures as well as the effect of accelerating and slowing down such nanostructural changes. This approach allows us to learn more about how to systematically control nanostructure formation and stability.

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