| 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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Bendeif, El-Eulmi
Soleil Synchrotron
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2023Role and Effect of Meso-Structuring Surfactants on Properties and Formation Mechanism of Microfluidic-Enabled Mesoporous Silica Microspherescitations
- 2023Crystal Structure, Hirhfeld Surface Analysis and IR Analysis of 2-Amino-1,9-Dihydro-6H-Purin-6-One-Selenate-Watercitations
- 2023Synthesis, catalytic activity, magnetic study and anticorrosive activity of mild steel in HCl 1 M medium of (H3dien)[Cu(NO3)(C2O4)2].2H2O. A redetermination at 100 Kcitations
- 2021Synthesis, structural elucidation, spectroscopic, Hirshfeld surface analysis and theoretical simulation of a new adeninium orthoperiodate (1−) bis(hydrate) organic–inorganic hybrid crystalscitations
- 2018Conducting Anilate-Based Mixed-Valence Fe(II)Fe(III) Coordination Polymer: Small-Polaron Hopping Model for Oxalate-Type Fe(II)Fe(III) 2D Networkscitations
- 2018Conducting Anilate-Based Mixed-Valence Fe(II)Fe(III) Coordination Polymer: Small-Polaron Hopping Model for Oxalate-Type Fe(II)Fe(III) 2D Networks
- 2018Broadband Emission in a New Two-Dimensional Cd-Based Hybrid Perovskitecitations
- 2017Control of the white-light emission in the mixed two-dimensional hybrid perovskites (C6H11NH3)2[PbBr4−xIx]citations
- 2017In-house time-resolved photocrystallography on the millisecond timescale using a gated X-ray hybrid pixel area detectorcitations
- 2015Structure determination of molecular nanocomposites by combining pair distribution function analysis and solid-state NMRcitations
- 2015Optical Investigation of Broadband White-Light Emission in Self-Assembled Organic-Inorganic Perovskite (C6H11NH3)(2)PbBr4citations
- 2013Room temperature bistability with wide thermal hysteresis in a spin crossover silica nanocompositecitations
- 2013Room temperature bistability with wide thermal hysteresis in a spin crossover silica nanocompositecitations
- 2013Structural reinvestigation of the photoluminescent complex [NdCl2(H2O)(6)]Clcitations
Places of action
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article
Optical Investigation of Broadband White-Light Emission in Self-Assembled Organic-Inorganic Perovskite (C6H11NH3)(2)PbBr4
Abstract
The performance of hybrid organic perovskite (HOP) for solar energy conversion is driving a renewed interest in their light emitting properties. The recent observation of broad visible emission in layered HOP highlights their potential as white-light emitters. Improvement of the efficiency of the material requires a better understanding of its photophysical properties. We present in-depth experimental investigations of white-light (WL) emission in thin films of the (C6H11NH3)(2)PbBr4. The broadband, strongly Stokes shifted emission presents a maximum at 90 K when excited at 3.815 eV, and below this temperature coexists with an excitonic edge emission. X-rays and calorimetry measurements exclude the existence of a phase transition as an origin of the thermal behavior of the WL luminescence. The free excitonic emission quenches at low temperature, despite a binding energy estimated to 280 meV. Time-resolved photoluminescence spectroscopy reveals the multicomponent nature of the broad emission. We analyzed the dependence of these components as a function of temperature and excitation energy. The results are consistent with the existence of self-trapped states. The quenching of the free exciton and the thermal evolution of the WL luminescence decay time are explained by the existence of an energy barrier against self-trapping, estimated to similar to 10 meV.