Nicola Gasparini

Imperial College Research Fellow (ICRF)

Biography

​Dr. Nicola Gasparini received his B.Sc. and M.Sc, in Chemistry and Organic Chemistry, and Photochemistry and Molecular Materials, respectevely, from the University of Bologna, Italy. In 2014 he joined the group of Prof. Brabec in the Institute of Materials for Electronics and Energy Technology (i-MEET) at the Friedrich Alexander University Erlangen-Nürnber (FAU) as Marie-Curie Fellow and received his Ph.D in 2017. In September 2017, he joined the King Abdullah University of Science and Technology (KAUST) as a postdoctoral fellow in the OMEGA Lab of Prof. Baran. Since September 2019, he is an independent researcher at Imperial College London holding a prestigious Imperial College Research Fellownship. He made major scientific contributions regarding photophysical properties of organic semiconductors, resulting in  over 60 peer-reviewed articles, (including publications in Nature family journals, Energy and Environmental Science and Advanced Energy Materials). His research interests are in organic semiconductors with particular interests in charge transport and recombination processes in organic solar cells and photodetectors.

All sessions by Nicola Gasparini

Controlling charge carrier recombination in organic bulk heterojunction towards high efficiency and stable devices
09:30 AM

One key advantage of solution-processable organic semiconductors is the opportunity of blending different materials in order to attain novel material properties and applications. The concept of ternary blend organic solar cells makes use of exactly that idea: three (or more) organic chromphores are combined to better match the solar irradiance spectrum and thus increase the amount of light absorbed, which in turn will increase the power output of the solar cell. However, charge transport limitations of many current generation polymer blends typically require rather low active layer thicknesses (around 100 nm) for optimum performance. Here, we show the design of non-fullerene acceptor (NFA) and fullerene-based solar cells with reduced charge recombination processes leading to a high short circuit current density (Jsc) and fill factor (FF) in ternary blends, thus demonstrating how the recombination thresholds can be overcome.

Nicola Gasparini

Imperial College Research Fellow (ICRF)

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