Zentrum für Materialforschung (ZfM/LaMa)

Bild des Monats April 2021

Innovative Materials for Future Solar Cells

Organic-inorganic perovskites are important materials for future solar cells with record performances of 20 % and higher. Material scientists use doping and alloying to modify and enhance the materials properties and device performance.

Recently, the teams of Johanna Heine (Inorganic Chemistry, Philipps-Universität Marburg), Ralf Tonner (Theoretical Chemistry, Universität Leipzig), and Sangam Chatterjee (Optical Spectroscopy, Justus-Liebig-Universität Gießen), each an expert in the respective field, have collaborated to provide deep insights into doping materials for future solar cell applications.

They have presented model compounds featuring antimony and bismuth doped lead anions that represent precise cut‐outs of doped perovskites. Optical spectroscopy reveals surprisingly low band gaps due to the significant electronic interactions between the constituent metal atoms.

These compounds are the first examples of a promising new class of materials that may expand the useful properties of lead halide perovskites for optoelectronic applications. The article is available at Angewandte Chemie with open access under DOI: 10.1002/anie.202014696.

Dieses Bild wurde eingereicht von Philip Klement, Arbeitsgruppe Prof. Sangam Chatterjee.

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