(Invited Talk) Intercalation engineering in layered Halide Perovskites
Creators: name: PEDESSEAU, Laurent
name: KEPENEKIAN, Mikael
name: TRAORE, Boubacar
name: KATAN, Claudine
name: EVEN, Jacky
Publisher: name: Zenodo
Year: 2019

description: 3D halide perovskites are exciting materials for optoelectronic applications1 and amazing new solar cell devices2,3. 2D Halide Perovskites also allow both stabilizing and functionalizing the 3D structures. More, the number of available layered perovskite compounds is increasing rapidly. A simple spatial interruption in the 3D structure such as intercalation by a layer of molecules, or ions or even a mixture of molecules and ions can dramatically affect the intrinsic properties of the pristine perovskites4. Here, a comparison of selected cases is proposed relying both on theoretical studies (quantum confinement effect, mixing of electronic states …) and experimental measurements (crystallography, spectroscopy, enthalpies of formation). The dielectric profiles along the stacking axis for different cases are also compared5,6. Finally, the limit to the thermodynamic stability7 is explored as a function of the number of layers in a single phase layered perovskites. This project has received funding from the European Union’s Horizon 2020 research and innovation Programme under the grant agreement No 862656. <br> (1) Mitzi, D. B.; Feild, C. A.; Harrison, W. T. A.; Guloy, A. M. Conducting Tin Halides with a Layered<br> Organic-Based Perovskite Structure. Nature 1994, 369 (6480), 467–469.<br> https://doi.org/10.1038/369467a0.<br> (2) Lee, M. M.; Teuscher, J.; Miyasaka, T.; Murakami, T. N.; Snaith, H. J. Efficient Hybrid Solar Cells<br> Based on Meso-Superstructured Organometal Halide Perovskites. Science 2012, 338 (6107), 643–<br> 647. https://doi.org/10.1126/science.1228604.<br> (3) Kim, H.-S.; Lee, C.-R.; Im, J.-H.; Lee, K.-B.; Moehl, T.; Marchioro, A.; Moon, S.-J.; Humphry-<br> Baker, R.; Yum, J.-H.; Moser, J. E.; et al. Lead Iodide Perovskite Sensitized All-Solid-State<br> Submicron Thin Film Mesoscopic Solar Cell with Efficiency Exceeding 9%. Scientific Reports<br> 2012, 2. https://doi.org/10.1038/srep00591.<br> (4) Smith, M. D.; Pedesseau, L.; Kepenekian, M.; Smith, I. C.; Katan, C.; Even, J.; Karunadasa, H. I.<br> Decreasing the Electronic Confinement in Layered Perovskites through Intercalation. Chem. Sci.<br> 2017, 8 (3), 1960–1968. https://doi.org/10.1039/C6SC02848A.<br> (5) Traore, B.; Pedesseau, L.; Assam, L.; Che, X.; Blancon, J.-C.; Tsai, H.; Nie, W.; Stoumpos, C. C.;<br> Kanatzidis, M. G.; Tretiak, S.; et al. Composite Nature of Layered Hybrid Perovskites: Assessment<br> on Quantum and Dielectric Confinements and Band Alignment. ACS Nano 2018, 12 (4), 3321–3332.<br> https://doi.org/10.1021/acsnano.7b08202.<br> (6) Sapori, D.; Kepenekian, M.; Pedesseau, L.; Katan, C.; Even, J. Quantum Confinement and Dielectric<br> Profiles of Colloidal Nanoplatelets of Halide Inorganic and Hybrid Organic–Inorganic Perovskites.<br> Nanoscale 2016, 8 (12), 6369–6378. https://doi.org/10.1039/C5NR07175E.<br> (7) Soe, C. M. M.; Nagabhushana, G. P.; Shivaramaiah, R.; Tsai, H.; Nie, W.; Blancon, J.-C.;<br> Melkonyan, F.; Cao, D. H.; Traoré, B.; Pedesseau, L.; et al. Structural and Thermodynamic Limits of<br> Layer Thickness in 2D Halide Perovskites. PNAS 2019, 116 (1), 58–66.<br> https://doi.org/10.1073/pnas.1811006115.
description: https://videosjnpv2019.geeps.centralesupelec.fr/files/02a-mercredi-matin-20191204/pedesseaux.mp4