IDK Student Representative
PhD student in the the group of Dr. Enrico DaComo, LMU Munich
2007 - 2009
Elite master’s program of ‘Advanced Materials Sciences’ graduated with Master of Science (M. Sc.), LMU Munich
Topic of Master Thesis: "Morphology correlated observation of charge transfer excitons in polymer/fullerene solar cells"
2004 – 2007
Bachelor of Science (B. Sc.) at the Friedrich-Alexander-Universität, Erlangen/Nürnberg
Scholarship of the IDK-NBT (Elitenetwork of Bavaria)
In recent years semiconductor nanocrystals turned out to be promising building blocks for photovoltaic application. Their high absorption cross-section enables efficient light harvesting and makes them interesting for application in solution processable solar cells. For low cost solar cell devices it is of interest to investigate new classes of materials besides the strongly investigated nanocrystals CdSe and CdTe. Copper based chalcogenides, such as Cu2‑xS, Cu2‑xSe, and Cu2‑xTe, appear to hold potential for such technologies because of the large abundance of the elements. Indeed, it has already been shown that Cu2S/CdS nanocrystal solar cells reach efficiencies of 1.6 %. My work comprises the investigation of the optical properties of copper chalcogenide nanocrystals with respect to their applicability in photovoltaic.
I. Kriegel, C. Y. Jiang, J. Rodriguez-Fernandez, R. D. Schaller, D. V. Talapin, E. da Como, J. Feldmann:
“Tuning the Excitonic and Plasmonic Properties of Copper Chalcogenide Nanocrystals”
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 134 (3):1583-1590; 10.1021/ja207798q JAN 25 2012
I. Kriegel, J. Rodríguez-Fernández, E. Da Como, A. A. Lutich, J. M. Szeifert, and J. Feldmann:
"Tuning the Light Absorption of Cu1.97S Nanocrystals in Supercrystal Structures"
Chemistry of Materials, 23, 1830–1834 (2011)
M. Hallermann, I. Kriegel, E. Da Como, J. M. Berger, E. von Hauff, J. Feldmann:
"Charge transfer excitons in polymer/fullerene blends: the role of morphology and chain conformation"
Adv. Funct. Mater. 19, 3662-3668 (2009)