Group leader

Mirhosseini, Hossein
Hossein Mirhosseini
Group leader
Phone: +49 351 4646-3249

Theory Solar Cells

Group Members

Kormath Raghupathy, Ramya
Ramya Kormath Raghupathy
Post-doctoral research scientist
Phone: +49 351 4646-3249

Theory Solar Cells

Former Group Members

profile_image
Elaheh Ghorbani
Post-doctoral research scientist
Phone:+49 6131 3922703
Kiss, Janos
Janos Kiss
Post-doctoral research scientist

Publication highlights

1.
Janos Kiss, Thomas Gruhn, Guido Roma, and Claudia Felser, "Theoretical Study on the Diffusion Mechanism of Cd in the Cu-Poor Phase of CuInSe2 Solar Cell Material," The Journal of Physical Chemistry C 117 (49), 25933-25938 (2013).
2.
Janos Kiss, Thomas Gruhn, Guido Roma, and Claudia Felser, "Theoretical Study on the Structure and Energetics of Cd Insertion and Cu Depletion of CuIn5Se8," The Journal of Physical Chemistry C 117 (21), 10892-10900 (2013).

Solar Cells

ComCIGS II: Computational material science combined with experiments for the optimization of the efficiency of thin-film solar cells based on Cu(In,Ga)Se2.

Thin film solar cells based on CuIn1-xGaxSe2 (CIGS) are industrially manufactured in a large scale, being deployed worldwide due to their outstanding price/performance ratio, and because their device characteristics offers good performance in warm climates. Although efficiencies of up to 20.4% have been achieved at the laboratory scale, there is still considerable room for improvement both in the material properties and in the way how such devices are industrially mass produced.

A scanning electron microscopy (SEM) image for the cross section of a CIGS thin film is given in the header figure at the top of the page, showing the layer sequence from the top to bottom: MgF2 antireflective coating, ZnO:Al, i-ZnO, CdS buffer layer, CIGS absorber layer, MoSe2 and Mo, respectively.

<div style="text-align: justify;"><strong>Figure 1:</strong> Part of our in-hose Linux based high-performance computing cluster together with the atomic model of CuIn<sub>5</sub>Se<sub>8</sub> representing the thin film solar cell materials theoretically investigated by our group.</div> Zoom Image
Figure 1: Part of our in-hose Linux based high-performance computing cluster together with the atomic model of CuIn5Se8 representing the thin film solar cell materials theoretically investigated by our group.

The main puorpose of the ComCIGS-II project funded by the German Bundesministerium für Wirtschaft und Energie is to improve the efficiency of thin film solar cells, which is a collaborative effort based on industrial and scientific partners: IBM Deutschland, Manz AG, Schott AG,  Helmholtz-Zentrum Berlin, Friedrich Schiller University Jena, Johannes Gutenberg University Mainz, and Max Planck Institute for Chemical Physics of Solids.

 
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