Regensburg 2022 – scientific programme

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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 21: Functional semiconductors for renewable energy solutions (joint session HL/KFM)

KFM 21.6: Talk

Wednesday, September 7, 2022, 16:15–16:30, H36

Simulation of the reaction kinetics of the A_Si-Si_i-defect — •Kevin Lauer^1,2, Katharina Peh², Wichard Beenken², Erich Runge², and Stefan Krischok² — ¹CiS Forschungsinstitut für Mikrosensorik GmbH, Konrad-Zuse-Str. 14, 99099 Erfurt, Germany — ²TU Ilmenau, Institut für Physik und Institut für Mikro- und Nanotechnologien, 98693 Ilmenau, Germany

Light-induced degradation (LID) is a severe problem for silicon photo-sensitive devices like solar cells and photo detectors. LID reaction kinetics may be explained by the A_Si-Si_i-defect model. [1] This model consists of seven states. The transitions between these states are assumed to be first order equilibrium reactions, which can be mathematically treated by a system of linear differential equation. [1] This is numerically solved and compared to the LID cycle using well-known together with some estimated reaction constants.

[1] K. Lauer, C. Möller, C. Tessmann, D. Schulze, and N. V. Abrosimov, "Activation energies of the In_Si-Si_i defect transitions obtained by carrier lifetime measurements", physica status solidi (c), vol. 14, no. 5, p. 1600033, 2017.