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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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| 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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| Azam, Siraj |
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| Ali, M. A. |
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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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Ehre, David
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2024Local Environment of Sc and Y Dopant Ions in Aluminum Nitride Thin Filmscitations
- 2024A Gd-doped ceria/TiOx nanocomposite as the active layer in a three terminal electrochemical resistivity switch.citations
- 2022C-Axis Textured, 2–3 μm Thick Al0.75Sc0.25N Films Grown on Chemically Formed TiN/Ti Seeding Layers for MEMS Applicationscitations
- 2021Local Piezoelectric Properties of Doped Biomolecular Crystalscitations
- 2020Surface Piezoelectricity and Pyroelectricity in Centrosymmetric Materials: A Case of α-Glycinecitations
- 2016CH3NH3PbBr3 is not pyroelectric, excluding ferroelectric-enhanced photovoltaic performancecitations
- 2008X-ray photoelectron spectroscopy of amorphous and quasiamorphous phases of BaTi O3 and SrTi O3citations
- 2007Structural transformations during formation of quasi-amorphous BaTiO 3citations
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article
CH3NH3PbBr3 is not pyroelectric, excluding ferroelectric-enhanced photovoltaic performance
Abstract
<p>To experimentally (dis)prove ferroelectric effects on the properties of lead-halide perovskites and of solar cells, based on them, we used second-harmonic-generation spectroscopy and the periodic temperature change (Chynoweth) technique to detect the polar nature of methylammonium lead bromide (MAPbBr<sub>3</sub>). We find that MAPbBr<sub>3</sub> is probably centrosymmetric and definitely non-polar; thus, it cannot be ferroelectric. Whenever pyroelectric-like signals were detected, they could be shown to be due to trapped charges, likely at the interface between the metal electrode and the MAPbBr<sub>3</sub> semiconductor. These results indicate that the ferroelectric effects do not affect steady-state performance of MAPbBr<sub>3</sub> solar cells.</p>