Research

RESEARCH

Aim

The core of our research involves the control of ultrafast excited state processes in molecular, inorganic and hybrid complexes with solar energy application. We study both complexes with application in photovoltaics (Figure 1A) and in photocatalysis (Figure 1B). Key targets towards efficient harvesting of sunlight are directional light-induced electron transfer and long-lived charge separation. We study the control of these processes via:

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tuning the 3D nanostructure of the complex, and

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using external stimuli such as plasmonic field enhancements.

Figure 1. Light-induced processes in photovoltaic (A) and photocatalytic (B) complexes.

Techniques

Excited state processes are monitored in real-time using advanced complementary spectroscopic techniques such as femtosecond transient absorption, ultrafast x-ray absorption and time-resolved photoluminescence. The first and latter method are present locally, while transient x-ray absorption experiments are performed at external synchrotron and x-ray free electron laser facilities. These methods enable us to monitor individual ultrafast light-induced processes in real-time. All these processes together determine the overall performance of solar energy devices.

A recent presentation about our work can be found hereGeneral talk

Collaborations

In addition to internal collaborations within MESA+, we also collaborate with the following scientists:

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Prof. Tomas Torres, University of Madrid, Spain
http://web.uam.es/gruposinv/ftalo/about.htm

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Prof. Wesley R. Browne, University of Groningen, The Netherlands
http://www.rug.nl/fmns-research/browne/index

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Prof. Han Vos, Dublin City University, Ireland
http://www.dcu.ie/chemistry/biographies/han_vos_b.shtml

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Prof. Leticia González, University of Vienna, Austria
http://theochem.univie.ac.at/index.php?id=2

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Prof. Sven Rau, Ulm University, Germany

https://www.uni-ulm.de/en/nawi/nawi-anorg1/staff/ak-rau/

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Dr. Jens Uhlig, Lund University, Sweden
http://www.chemphys.lu.se/

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Dr. Kristoffer Haldrup, DTU Copenhagen, Denmark

http://www.fysik.dtu.dk/