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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 22: Perovskite and Photovoltaics II (joint session HL/KFM)

KFM 22.1: Talk

Thursday, March 21, 2024, 09:30–09:45, EW 203

Raman spectroscopy on BaTiS3 perovskite nanocrystals — •Selina Nöcker¹, Sandra Zech¹, Vincent Mauritz², Katharina Dehm², Ryan Crisp², and Janina Maultzsch¹ — ¹Department of Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany — ²Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany

Perovskites and related materials are emerging candidates for photovoltaics demonstrating promising energy conversion efficiencies. Here we study lead- and halide-free BaTiS3, colloidally synthesized as wire- and rod-shaped nanocrystals.

For the structural analysis of those nanocrystals, we use Raman spectroscopy and compare the results to single-crystal spectra of BaTiS3. Our study includes temperature-dependent and excitation-wavelength dependent measurements. Moreover, we show that Raman spectroscopy can be used as a straightforward method to distinguish between the two shape types.

Keywords: Perovskite; Raman spectroscopy; Nanocrystals