Regensburg 2022 – wissenschaftliches Programm

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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 27: Perovskite and Photovoltaics 3 (joint session HL/CPP/KFM)

KFM 27.1: Vortrag

Donnerstag, 8. September 2022, 15:00–15:15, H31

Atomically Thin Sheets of Lead-Free 1D Hybrid Perovskites Feature Tunable White-Light Emission from Self-Trapped Excitons — •Philip Klement1, Natalie Dehnhardt2, Chuan-Ding Dong3, Florian Dobener1, Julius Winkler2, Samuel Bayliff4, Detlev M. Hofmann1, Peter J. Klar1, Stefan Schumacher3,5, Sangam Chatterjee1, and Johanna Heine21Institute of Experimental Physics I and Center for Materials Research (ZfM), Justus Liebig University Giessen, Giessen, Germany — 2Department of Chemistry and Material Sciences Center, Philipps-Universität Marburg, Marburg, Germany — 3Department of Physics and Center for Optoelectronics and Photonics Paderborn (CeOPP), Paderborn University, Paderborn, Germany — 4Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK, USA — 5College of Optical Sciences, The University of Arizona, Tucson, AZ, USA

One of the major current challenges in 2D materials' synthesis is the intentional design of building blocks to introducing superior chemical and physical properties. The limiting factor in this approach is the commonly-believed paradigm that in-plane covalent interactions are strictly necessary to form 2D materials, limiting the number of candidates. Here, we go beyond the paradigm that atomically thin materials require in-plane covalent bonding and report single layers of the one-dimensional organic-inorganic perovskite [C7H10N]3[BiCl5]Cl. Its unique 1D-2D structure enables single layers and the formation of self-trapped excitons which show white-light emission.

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