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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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Kronik, Leeor
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2021Mechanism and Timescales of Reversible p‐Doping of Methylammonium Lead Triiodide by Oxygencitations
- 2021Mechanism and Timescales of Reversible p‐Doping of Methylammonium Lead Triiodide by Oxygencitations
- 2019Constructing the Electronic Structure of CH3NH3PbI3 and CH3NH3PbBr3 Perovskite Thin Films from Single-Crystal Band Structure Measurementscitations
- 2018Effect of Internal Heteroatoms on Level Alignment at Metal/Molecular Monolayer/Si Interfacescitations
- 2017Biologically Controlled Morphology and Twinning in Guanine Crystalscitations
- 2016Valence and Conduction Band Densities of States of Metal Halide Perovskitescitations
- 2016Enhanced Magnetoresistance in Molecular Junctions by Geometrical Optimization of Spin-Selective Orbital Hybridizationcitations
- 2016High Chloride Doping Levels Stabilize the Perovskite Phase of Cesium Lead Iodidecitations
- 2016Optical phonons in methylammonium lead halide perovskites and implications for charge transportcitations
- 2015Multiscale approach to the electronic structure of doped semiconductor surfacescitations
- 2015"Guanigma"citations
- 2015"guanigma":The Revised Structure of Biogenic Anhydrous Guaninecitations
- 2013Effect of molecule-surface reaction mechanism on the electronic characteristics and photovoltaic performance of molecularly modified Sicitations
- 2010Hg/Molecular Monolayer-Si Junctionscitations
- 2006Spin-polarized electronic structure of Mn-IV-V2 chalcopyritescitations
- 2005Size-dependent spintronic properties of dilute magnetic semiconductor nanocrystalscitations
- 2004Electronic structure and spin polarization of MnGaPcitations
- 2002Electronic structure and spin polarization of MnxGa1-xNcitations
- 2001Electronic structure and spin polarization of Mn-containing dilute magnetic III-V semiconductorscitations
- 2000Frontier orbital model of semiconductor surface passivation
Places of action
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article
Optical phonons in methylammonium lead halide perovskites and implications for charge transport
Abstract
Lead-halide perovskites are promising materials for opto-electronic applications. Recent reports indicated that their mechanical and electronic properties are strongly affected by the lattice vibrations. Herein we report far-infrared spectroscopy measurements of CH3NH3Pb(I/Br/Cl)(3) thin films and single crystals at room temperature and a detailed quantitative analysis of the spectra. We find strong broadening and anharmonicity of the lattice vibrations for all three halide perovskites, which indicates dynamic disorder of the lead-halide cage at room temperature. We determine the frequencies of the transversal and longitudinal optical phonons, and use them to calculate, via appropriate models, the static dielectric constants, polaron masses, electron-phonon coupling constants, and upper limits for the phonon-scattering limited charge carrier mobilities. Within the limitations of the model used, we can place an upper limit of 200 cm(2) V-1 s(-1) for the room temperature charge carrier mobility in MAPbI(3) single crystals. Our findings are important for the basic understanding of charge transport processes and mechanical properties in metal halide perovskites.