Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
DOI: https://doi.org/10.29363/nanoge.hopv.2022.118
Publication date: 20th April 2022
In this communication, we summarize different approaches developed in our research group to tune effectively the electrochemical, optical and morphological characteristics of rylenimide-based organic semiconductors for their use in (opto)electronic devices including organic solar cells (OSCs) [1].
Different variables were finely tuned in these organic assemblies, such as the length of the π-conjugated backbones [2,3], the energy levels and topologies of the frontier molecular orbitals and their shape and dimensionality. By using atomic force microscopy (AFM) and X-ray diffraction (XRD) in thin films we correlate these tunable properties with the microstructure observed. The versatility of 1,2-diketone functionality allows us the design not only n-type organic semiconductors but also ambipolar materials by combining electron-withdrawing structures with electron-donor moieties. We will highlight our most recent studies on the use of different end-capped substituents [4] and the effect of structural dimensionality [5] in the performance in OSC of some ambipolar and n-type semiconductor materials based on π-conjugated rylenimides.
This work was financially supported by MICINN (PID2019-106268GB-C33) and the UCM (INV.GR.00.1819.10759). MJAN gratefully acknowledges Universidad Rey Juan Carlos for a postdoctoral contract.
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