| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Walker, Alison B.
University of Bath
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Motional Narrowing Effects in the Excited State Spin Populations of Mn-Doped Hybrid Perovskitescitations
- 2020Deducing transport properties of mobile vacancies from perovskite solar cell characteristicscitations
- 2019Putting the Squeeze on Lead Iodide Perovskitescitations
- 2019How transport layer properties affect perovskite solar cell performancecitations
- 2018Engineering Two-Phase and Three-Phase Microstructures from Water-Based Dispersions of Nanoparticles for Eco-Friendly Polymer Solar Cell Applicationscitations
- 2018The Role of Surface Recombination on the Performance of Perovskite Solar Cells:Effect of Morphology and Crystalline Phase of TiO 2 Contactcitations
- 2018The Role of Surface Recombination on the Performance of Perovskite Solar Cellscitations
- 2018Lead-Free Perovskite Semiconductors Based on Germanium-Tin Solid Solutions:Structural and Optoelectronic Propertiescitations
- 2018Lead-Free Perovskite Semiconductors Based on Germanium-Tin Solid Solutionscitations
- 2018The role of surface recombination on the performance of perovskite solar cells: Effect of morphology and crystalline phase of TiO 2 contactcitations
- 2015Characterization of Planar Lead Halide Perovskite Solar Cells by Impedance Spectroscopy, Open-Circuit Photovoltage Decay, and Intensity-Modulated Photovoltage/Photocurrent Spectroscopycitations
- 2014Monte Carlo studies of electronic processes in dye-sensitized solar cellscitations
- 2013Structural and electronic properties of hybrid perovskites for high-efficiency thin-film photovoltaics from first-principlescitations
- 2012In situ detection of free and trapped electrons in dye-sensitized solar cells by photo-induced microwave reflectance measurementscitations
- 2010Bicontinuous minimal surface nanostructures for polymer blend solar cellscitations
Places of action
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article
Motional Narrowing Effects in the Excited State Spin Populations of Mn-Doped Hybrid Perovskites
Abstract
<p>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 the excited state spin-polarizations. Here, we report that motional narrowing acts on the photoexcited spin-polarization in CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> thin films, which are doped at percentage-level with Mn<sup>2+</sup> ions. Using ultrafast circularly polarized broadband transient absorption spectroscopy at cryogenic temperatures, we investigate the spin population dynamics in these doped hybrid perovskites and find that spin relaxation lifetimes are increased by a factor of 3 compared to those of 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 as a concept to extend spin lifetimes of hybrid perovskites.</p>