Freysoldt, C.: On-the-fly parameterization of internal coordinate force constants for quasi-Newton geometry optimization in atomistic calculations. Computational Materials Science 133, pp. 71 - 81 (2017)
Koprek, A.; Cojocaru-Mirédin, O.; Würz, R.; Freysoldt, C.; Gault, B.; Raabe, D.: Cd and Impurity Redistribution at the CdS/CIGS Interface After Annealing of CIGS-Based Solar Cells Resolved by Atom Probe Tomography. IEEE Journal of Photovoltaics 7 (1), 7762819, pp. 313 - 321 (2017)
Cui, Y.; Lee, S.; Freysoldt, C.; Neugebauer, J.: Role of biaxial strain and microscopic ordering for structural and electronic properties of InxGa1-xN. Physical Review B 92 (8), 085204, pp. 5204 - 5210 (2015)
Freysoldt, C.; Pfanner, G.; Neugebauer, J.: The dangling-bond defect in amorphous silicon: Statistical random versus kinetically driven defect geometries. Journal of Non-Crystalline Solids 358 (17), pp. 2063 - 2066 (2012)
Pfanner, G.; Freysoldt, C.; Neugebauer, J.; Gerstmann, U.: Ab initio EPR parameters for dangling-bond defect complexes in silicon: Effect of Jahn-Teller distortion. Physical Review B 85 (19), 195202, pp. 1 - 8 (2012)
Mitra, C.; Lange, B.; Freysoldt, C.: Quasiparticle band offsets of semiconductor heterojunctions from a generalized marker method. Physical Review B 84 (19), 193304, pp. 1 - 4 (2011)
Pfanner, G.; Freysoldt, C.; Neugebauer, J.: Ab initio study of electron paramagnetic resonance hyperfine structure of the silicon dangling bond: Role of the local environment. Physical Review B 83 (14), 144110, pp. 1 - 8 (2011)
Lange, B.; Freysoldt, C.; Neugebauer, J.: Native and hydrogen-containing point defects in Mg3N2: A density functional theory study. Physical Review B 81, 224109, pp. 1 - 10 (2010)
In this project we conduct together with Dr. Sandlöbes at RWTH Aachen and the department of Prof. Neugebauer ab initio calculations for designing new Mg – Li alloys. Ab initio calculations can accurately predict basic structural, mechanical, and functional properties using only the atomic composition as a basis.
The wide tunability of the fundamental electronic bandgap by size control is a key attribute of semiconductor nanocrystals, enabling applications spanning from biomedical imaging to optoelectronic devices. At finite temperature, exciton-phonon interactions are shown to exhibit a strong impact on this fundamental property.