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Winton Programme for the Physics of Sustainability

Department of Physics


M.Sc. in Physics from Ludwig-Maximilians-Universität Munich (2012)
B.Sc. in Physics from Ludwig-Maximilians-Universität Munich (2010)


Ultrafast spectroscopy on processes in organic solar cells

My research will focus on the investigation of states and processes in organic solar cells by femtosecond laser spectroscopy and time resolved photoluminescence spectroscopy. The dynamics and properties of excitons, charge carriers and bound states at interfaces will be investigated in different combinations of organic and inorganic materials. The understanding of these processes will help to improve materials and devices to reach higher efficiencies.


Key publications: 
  1. Jakowetz A. C.; Böhm, M.K.; Sadhanala, A.; Huettner, S.; Rao, A.; Friend, R. H. "Visualizing excitations at buried heterojunctions in organic semiconductor blends". Nat. Mater. 2017, doi:10.1038/nmat4865.
  2. Jakowetz, A. C.; Böhm, M. L.; Zhang, J.; Sadhanala, A.; Huettner, S.; Bakulin, A. A.; Rao, A.; Friend, R. H. "What Controls the Rate of Ultrafast Charge Transfer and Charge Separation Efficiency in Organic Photovoltaic Blends". J. Am. Chem. Soc. 2016, 138 (36), 11672–11679.
  3. Umeyama, T.; Miyata, T.; Jakowetz, A. C.; Shibata, S.; Kurotobi, K.; Higashino, T.; Koganezawa, T.; Tsujimoto, M.; Gélinas, S.; Matsuda, W.; Seki, S.; Friend, R. H.; Imahori, H. "Regioisomer Effects of [70]fullerene Mono-Adduct Acceptors in Bulk Heterojunction Polymer Solar Cells". Chem. Sci. 20178, 181-188.
  4. Pfadler, T.; Coric, M.; Palumbiny, C. M.; Jakowetz, A. C.; Strunk, K.-P.; Dorman, J. A.; Ehrenreich, P.; Wang, C.; Hexemer, A.; Png, R.-Q.; Ho, P. K. H.; Weickert, J.; Schmidt-Mende, L. "Influence of Interfacial Area on Exciton Separation and Polaron Recombination in Nanostructured Bilayer All-Polymer Solar Cells". ACS Nano 2014, 8 (12), 12397–12409.
  5. Iza, D. C.; Muñoz-Rojas, D.; Musselman, K. P.; Weickert, J.; Jakowetz, A. C.; Sun, H.; Ren, X.; Hoye, R. L. Z.; Lee, J. H.; Wang, H.; Schmidt-Mende, L.; Macmanus-Driscoll, J. L. "Nanostructured Conformal Hybrid Solar Cells: A Promising Architecture towards Complete Charge Collection and Light Absorption". Nanoscale Res. Lett. 2013, 8 (1), 359.
Winton Scholar
Supervisor: Prof Richard Friend
Optoelectronics Group
Mr Andreas  Jakowetz

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