| Autor: |
Dučinskas A; Laboratory of Photonics and Interfaces, École Polytechnique Fédéralé de Lausanne, Lausanne, 1015, Switzerland.; Max Planck Institute for Solid State Research, Heisenbergstraße 1, Stuttgart, 70569, Germany., Fish GC; Photochemical Dynamics Group, École Polytechnique Fédéralé de Lausanne, Lausanne, 1015, Switzerland., Hope MA; Laboratory of Magnetic Resonance, École Polytechnique Fédéralé de Lausanne, Lausanne, 1015, Switzerland., Merten L; Institut für Angewandte Physik, Universität Tübingen, Auf der Morgenstelle 10, Tübingen, 72076, Germany., Moia D; Max Planck Institute for Solid State Research, Heisenbergstraße 1, Stuttgart, 70569, Germany., Hinderhofer A; Institut für Angewandte Physik, Universität Tübingen, Auf der Morgenstelle 10, Tübingen, 72076, Germany., Carbone LC; Laboratory of Photonics and Interfaces, École Polytechnique Fédéralé de Lausanne, Lausanne, 1015, Switzerland., Moser JE; Photochemical Dynamics Group, École Polytechnique Fédéralé de Lausanne, Lausanne, 1015, Switzerland., Schreiber F; Institut für Angewandte Physik, Universität Tübingen, Auf der Morgenstelle 10, Tübingen, 72076, Germany., Maier J; Max Planck Institute for Solid State Research, Heisenbergstraße 1, Stuttgart, 70569, Germany., Milić JV; Laboratory of Photonics and Interfaces, École Polytechnique Fédéralé de Lausanne, Lausanne, 1015, Switzerland.; Adolphe Merkle Institute, University of Fribourg, Fribourg, 1700, Switzerland., Grätzel M; Laboratory of Photonics and Interfaces, École Polytechnique Fédéralé de Lausanne, Lausanne, 1015, Switzerland. |
| Abstrakt: |
Layered hybrid perovskites based on Dion-Jacobson phases are of interest to various optoelectronic applications. However, the understanding of their structure-property relationships remains limited. Here, we present a systematic study of Dion-Jacobson perovskites based on (S)PbX 4 ( n = 1) compositions incorporating phenylene-derived aromatic spacers (S) with different anchoring alkylammonium groups and halides (X = I, Br). We focus our study on 1,4-phenylenediammonium (PDA), 1,4-phenylenedimethylammonium (PDMA), and 1,4-phenylenediethylammonium (PDEA) spacers. Systems based on PDA did not form a well-defined layered structure, showing the formation of a 1D structure instead, whereas the extension of the alkyl chains to PDMA and PDEA rendered them compatible with the formation of a layered structure, as shown by X-ray diffraction and solid-state NMR spectroscopy. In addition, the control of the spacer length affects optical properties and environmental stability, which is enhanced for longer alkyl chains and bromide compositions. This provides insights into their design for optoelectronic applications. |
