| 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
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article
Broadband Emission in a New Two-Dimensional Cd-Based Hybrid Perovskite
Abstract
Organic–inorganic hybrid perovskites (OIHP) are developing rapidly as high-performance semiconductors for solid-state solar cells and light emitting devices. Recently, lead-halide two-dimensional (2D) OIHP were found to present bright broadband visible emission, thus, highlighting their potential as single component white-light (WL) emitters. This contribution deals with the preparation of a new Cd-based 2D hybrid perovskite, of the chemical formula (C6H11NH3)2CdBr4 (abbreviated as compound 1), of which structural and optical properties have been studied and analyzed. Room temperature optical absorption (OA) measurements, performed on spin-coated film of compound 1, revealed a sharp excitonic absorption peak at 3.24 eV, and a large exciton binding energy of 377 meV, estimated from low temperature OA spectrum. Upon 325 nm irradiation, compound 1 showed a very broadband WL emission consisting of one peak at 2.94 eV, attributed to exciton confined in the [CdBr4]2– inorganic layers, and a second peak at 2.53 eV resulting from the cyclohexylammonium cations emission. Temperature dependence of PL spectra evidenced anomalous behavior accompanied by singularities around 50 and 150 K in the integrated intensity, the full width at half-maximum and the PL peaks positions. These singularities have been traced back to structural phase transitions, from temperature dependence powder and single crystal X-ray diffraction investigations, from which strong correlations had emerged between the structural distortion of the CdBr6 pseudo-octahedron and the broadening characteristics of the WL emission band. These hitherto unrecognized properties turn this and similar OIHP into perspective candidates for potential applications as WL-emitting diodes.