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HL: Fachverband Halbleiterphysik

HL 30: Poster 2

HL 30.42: Poster

Donnerstag, 8. September 2022, 11:00–13:00, P3

Non-linear optimization and error estimation for the dynamical modelling of photoluminescence spectra — •Sebastian Bohm¹, Max Großmann¹, Stefan Heyder¹, Klaus Schwarzburg², Peter Kleinschmidt¹, Erich Runge¹, and Thomas Hannappel¹ — ¹Fakultät für Mathematik und Naturwissenschaften, Technische Universität Ilmenau, Ehrenbergstraße 29, 98693 Ilmenau — ²Institut Solare Brennstoffe, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109 Berlin

Modern compute power and improved algorithms allow to determine, e.g., the parameters of a kinetic model of time-resolved photoluminescence spectroscopy (TRPL) via the simultaneous fit of many excitation-dependent TRPL spectra. Since our method is based on a maximum likelihood estimator, we obtain information on the reliability of the derived values as well. As example, we use a TRPL model of M. W. Gerber and R. N. Kleiman [J. Appl. Phys. 122, 095705 (2017), URL 10.1063/1.5001128].