Persistent Identifier
|
doi:10.11588/data/VM8ZKT |
Publication Date
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2024-03-12 |
Title
| Motional Narrowing Effects in the Excited State Spin Populations of Mn-Doped Hybrid Perovskites [Research Data] |
Author
| Zerhoch, Jonathan (Heidelberg University, Institute of Physical Chemistry) - ORCID: 0000-0003-4336-8828
Bodnar, Stanislav (Heidelberg University, Institute of Physical Chemistry)
Lerpinière, James E. (University of Bath, Department of Physics)
Liu, Shangpu (Heidelberg University, Institute of Physical Chemistry)
Neumann, Timo (University of Cambridge, Cavendish Laboratory)
Sergl, Barbara (Technische Universität München, Physics Department, TUM School of Natural Sciences) - ORCID: 0009-0008-1511-3215
Heindl, Markus W. (Heidelberg University, Institute of Physical Chemistry) - ORCID: 0000-0001-7968-617X
Shcherbakov, Andrii (Heidelberg University, Institute of Physical Chemistry) - ORCID: 0000-0003-4090-4082
Elghandour, Ahmed (Heidelberg University, Kirchhoff Institut für Physik)
Klingeler, Rüdiger (Heidelberg University, Kirchhoff Institut für Physik)
Walker, Alison B. (University of Bath, Department of Physics) - ORCID: 0000-0002-2232-9734
Deschler, Felix (Heidelberg University, Institute of Physical Chemistry) |
Point of Contact
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Zerhoch, Jonathan (Heidelberg University, Institute of Physical Chemistry)
Deschler, Felix (Heidelberg University, Institute of Physical Chemistry) |
Description
| Spin-orbit coupling in the electronic states of solution-processed hybrid metal halide perovskites forms complex spin-textures in the band structures and allows for optical manipulation of excited state spin-polarizations. Here, we report that motional narrowing acts on the photoexcited spin-polarization in CH3NH3PbBr3 thin films, which are doped at percentage-level with Mn2+ ions. Using ultrafast circularly polarized broadband transient absorption spectroscopy at cryogenic temperatures, we investigate the spin population dynamics in our doped hybrid perovskites and find that spin relaxation lifetimes are increased by a factor of three compared to undoped materials. Using quantitative analysis of the photoexcitation cooling processes, we reveal increased carrier scattering rates in the doped perovskites as the fundamental mechanism driving spin-polarization maintaining motional narrowing. Our work reports transition-metal doping of hybrid perovskites as a concept to extend spin lifetimes of hybrid perovskites. (2024-02-19) |
Subject
| Chemistry; Physics |
Keyword
| spin dynamics
perovskites
transition metal doping
ultrafast spectroscopy |
Related Publication
| Zerhoch, J; Bodnar, S; Lerpinière, J. E.; Liu, S; Neumann, T; Sergl, B; Heindl, M. W.; Shcherbakov, A; Elghandour, A; Klingeler, R; Walker, A. B.; Deschler, F. J. Phys. Chem. Lett. 2024, 15, 2851 - 2858 doi: 10.1021/acs.jpclett.3c03466 https://doi.org/10.1021/acs.jpclett.3c03466 |
Language
| English |
Funding Information
| European Research Council: ERC Starting Grant agreement no. 852084 ─ TWIST |
Distributor
| heiDATA: Heidelberg Research Data Repository (Heidelberg University) https://heidata.uni-heidelberg.de |