Prof. Dr. Hartmut Yersin
University of Regensburg

Prof. Dr. Peter Djurovich
University of Southern California, Los Angeles
Department of Chemistry

The hybrid perovskite-type materials consist of inorganic anions countered with organic cations. The anions typically represent halides of p-block metals, whereas the cation is a tetra-alkyl substituted ammonium or phosphonium. Thus, the general structure is simple and, importantly, resistant to degradation processes. Newly designed hybrid materials consisting of tin or antimony halides and pyrrolidinium cations are in the focus of this project. These materials show red to infra-red emission of exceptionally high quantum yield and large Stoke’s shift. They are promising candidates as emitters for future displays, photovoltaics materials, solar concentrators, and bio-imaging luminophores. They show a wide electronic structure tunability via the variation of the halides, the p-block metal, and/or the structure of the organic cation. Thus, a series of new hybrid emitters with finely tunable properties can be obtained. It is planned to investigate these emitters with respect to their photophysical properties.