Regensburg 2019 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 45: HL Posters III

HL 45.4: Poster

Donnerstag, 4. April 2019, 18:30–21:00, Poster E

Identifying recombination mechanisms in perovskite solar cells — •Seth Niklas Schumann, Fabian Meier, Clemens Göhler, and Carsten Deibel — Institut für Physik, Technische Universität Chemnitz, 09126 Chemnitz, Germany

Organic-inorganic perovskite solar cells yield high power conversion efficiencies above 20 % at low manufacturing cost. The recombination of charge carriers influences the performance. We studied recombination in (FAPbI₃)_x(MAPbBr₃)_1−x, processed with a one step approach. To identify the dominant loss mechanism we measured the open circuit voltage and time-resolved photoluminescence as a function of the incident light intensity. We compare the resulting ideality factor and recombination lifetime of the samples with different FAPbI₃ to MAPbBr₃ ratios and discuss them with respect to the solar cell parameters.