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15 results on '"Curti, Leonardo"'

3. Synthesis of Thick HgxCd1–xSe Nanoplatelets by Cation Exchange Catalyzed by Silver Ions, Showing Amplified Spontaneous Emission

Author

Fu, Ningyuan, primary, Lehouelleur, Henri, additional, Makké, Lina, additional, Curti, Leonardo, additional, Dabard, Corentin, additional, Bossavit, Erwan, additional, Xu, Xiang Zhen, additional, Pierucci, Debora, additional, Silly, Mathieu G., additional, Patriarche, Gilles, additional, Lhuillier, Emmanuel, additional, Diroll, Benjamin T., additional, and Ithurria, Sandrine, additional

Published
2024
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5. Shaping the Infrared luminescence of Colloidal Nanocrystals Using a Dielectric Microcavity

Author

Bossavit, Erwan, primary, Zhang, Huichen, additional, Ledos, Nicolas, additional, Cavallo, Mariarosa, additional, Mastrippolito, Dario, additional, Curti, Leonardo, additional, Khalili, Adrien, additional, Colle, Albin, additional, Lample, Pierrick, additional, Weis, Mateusz, additional, Margaillan, Florent, additional, Lafosse, Xavier, additional, Prado, Yoann, additional, Péronne, Emmanuel, additional, Pierucci, Debora, additional, Ithurria, Sandrine, additional, Boschetto, Davide, additional, Diroll, Benjamin T., additional, Degiron, Aloyse, additional, and Lhuillier, Emmanuel, additional

Published
2024
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6. Photoemission Insight on Narrow Band Gap PbS Quantum Dots Relevant for Infrared Imaging

Author

Zhang, Huichen, primary, Ledos, Nicolas, additional, Cavallo, Mariarosa, additional, Bossavit, Erwan, additional, Khalili, Adrien, additional, Curti, Leonardo, additional, Xu, Xiang Zhen, additional, Dandeu, Erwan, additional, Utterback, James K., additional, Ithurria, Sandrine, additional, Delerue, Christophe, additional, Pierucci, Debora, additional, Dudin, Pavel, additional, Avila, José, additional, Silly, Mathieu G., additional, and Lhuillier, Emmanuel, additional

Published
2024
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7. Room-temperature-persistent magnetic interaction between coordination complexes and nanoparticles in maghemite-based nanohybrids

Author

Curti, Leonardo, primary, Prado, Yoann, additional, Michel, Aude, additional, Talbot, Delphine, additional, Baptiste, Benoît, additional, Otero, Edwige, additional, Ohresser, Philippe, additional, Journaux, Yves, additional, Cartier dit Moulin, Christophe, additional, Dupuis, Vincent, additional, Fleury, Benoit, additional, Sainctavit, Philippe, additional, Arrio, Marie-Anne, additional, Fresnais, Jerome, additional, and Lisnard, Laurent, additional

Published
2024
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8. Lateral Confinement in 2D Nanoplatelets: A Strategy to Expand the Colloidal Quantum Engineering Toolbox.

Author

Curti, Leonardo, Dabard, Corentin, Makké, Lina, Fu, Ningyuan, Lehouelleur, Henri, Hua, Muchuan, Bossavit, Erwan, Cavallo, Mariarosa, Xu, Xiang Zhen, Pierucci, Debora, Silly, Mathieu G., Guzelturk, Burak, Lhuillier, Emmanuel, Climente, Juan I., Diroll, Benjamin T., and Ithurria, Sandrine

Subjects
*NANOPARTICLES, *ELECTRON beams, *PLAYGROUND design & construction, *STIMULATED emission, *ENGINEERING, *ELECTROLUMINESCENCE
Abstract

Among colloidal nanocrystals, 2D nanoplatelets offer a unique set of properties with exceptionally narrow luminescence and low lasing thresholds. Furthermore, their anisotropic shape expands the playground for the complex design of heterostructures where spectra but also scattering rates can be engineered. A challenge that still remains is to combine shell growth which makes NPLs stable, with spectral tunability. Indeed, most reported shelled nanoplatelets end up being red emitters due to a loss of quantum confinement. Here, the combination of both lateral and in‐plane confinements within a single heterostructure is explored. A CdS/CdSe/CdS/CdZnS core–crown–crown shell structure that enables yellow emission is grown and that is responsive to a large range of excitation including visible photons, X‐ray photons, electron beams, and electrical excitations. k.p simulations predict that emission tunability of up to several 100 s of meV can be obtained in ideal structures. This material also displays stimulated emission resulting from bi‐exciton emission with a low threshold. Once integrated into an LED stack, this material is compatible with sub‐bandgap excitation and exhibits high luminance. Scaling of the electroluminescence properties by downsizing the pixel size is also investigated. [ABSTRACT FROM AUTHOR]

Published
2024
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9. Impact of the Surface Chemistry of 2D Nanoplatelets on Cation Exchange

Author

Makké, Lina, primary, Fu, Ningyuan, additional, Lehouelleur, Henri, additional, Po, Hong, additional, Dabard, Corentin, additional, Curti, Leonardo, additional, Bossavit, Erwan, additional, Xu, Xiang Zhen, additional, Patriarche, Gilles, additional, Pierucci, Debora, additional, Silly, Mathieu G., additional, Lhuillier, Emmanuel, additional, and Ithurria, Sandrine, additional

Published
2023
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10. Orbital Magnetic Moment and Single-Ion Magnetic Anisotropy of the S = 1/2 K3[Fe(CN)6] Compound: A Case Where the Orbital Magnetic Moment Dominates the Spin Magnetic Moment

Author

Retegan, Marius, primary, Jafri, Sadaf Fatima, additional, Curti, Leonardo, additional, Lisnard, Laurent, additional, Otero, Edwige, additional, Rivière, Eric, additional, Haverkort, Maurits W., additional, Bleuzen, Anne, additional, Sainctavit, Philippe, additional, and Arrio, Marie-Anne, additional

Published
2023
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12. Expanding the color palette of bicolor-emitting nanocrystals

Author

Dabard, Corentin, primary, Po, Hong, additional, Fu, Ningyuan, additional, Makke, Lina, additional, Lehouelleur, Henri, additional, Curti, Leonardo, additional, Xu, Xiang Zhen, additional, Lhuillier, Emmanuel, additional, Diroll, Benjamin T., additional, and Ithurria, Sandrine, additional

Published
2023
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14. Orbital Magnetic Moment and Single-Ion Magnetic Anisotropy of the S= 1/2 K3[Fe(CN)6] Compound: A Case Where the Orbital Magnetic Moment Dominates the Spin Magnetic Moment

Author

Retegan, Marius, Jafri, Sadaf Fatima, Curti, Leonardo, Lisnard, Laurent, Otero, Edwige, Rivière, Eric, Haverkort, Maurits W., Bleuzen, Anne, Sainctavit, Philippe, and Arrio, Marie-Anne

Abstract

The potassium hexacyanoferrate(III), K3[FeIII(CN)6], is known for its exceptional magnetic anisotropy among the 3d transition metal series. The Fe(III) ions are in the S= 1/2 low spin state imposed by the strong crystal field of the cyanido ligands. A large orbital magnetic moment is expected from previous publications. In the present work, X-ray magnetic circular dichroism was recorded for a powder sample, allowing direct measurement of the Fe(III) orbital magnetic moment. A combination of molecular multiconfigurational ab initio and atomic ligand field multiplets calculations provides the spin and orbital magnetic moments for the [FeIII(CN)6]3−isolated cluster, the crystallographic unit cell, and the powder sample. The calculations of the angular dependencies of the spin and orbital magnetic moments with the external magnetic induction direction reveal easy magnetization axes for each S= 1/2 molecular entity and the crystal. It also shows that the orbital magnetic moment dominates the spin magnetic moment for all directions. Our measurements confirm that the orbital magnetic moment contributes to 60% of the total magnetization for the powder, which is in excellent agreement with our theoretical predictions. An orbital magnetic moment greater than the spin magnetic moment is exceptional for 3d transition metal ions. The impact of crystal field strength and distortion, π back-bonding, spin–orbit coupling, and external magnetic induction was analyzed, leading to a deeper understanding of the spin and orbital magnetic anisotropies.

Published
2023
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15. Orbital Magnetic Moment and Single-Ion Magnetic Anisotropy of the S = 1/2 K 3 [Fe(CN) 6 ] Compound: A Case Where the Orbital Magnetic Moment Dominates the Spin Magnetic Moment.

Author

Retegan M, Jafri SF, Curti L, Lisnard L, Otero E, Rivière E, Haverkort MW, Bleuzen A, Sainctavit P, and Arrio MA

Abstract

The potassium hexacyanoferrate(III), K 3 [Fe III (CN) 6 ], is known for its exceptional magnetic anisotropy among the 3d transition metal series. The Fe(III) ions are in the S = 1/2 low spin state imposed by the strong crystal field of the cyanido ligands. A large orbital magnetic moment is expected from previous publications. In the present work, X-ray magnetic circular dichroism was recorded for a powder sample, allowing direct measurement of the Fe(III) orbital magnetic moment. A combination of molecular multiconfigurational ab initio and atomic ligand field multiplets calculations provides the spin and orbital magnetic moments for the [Fe III (CN) 6 ] 3- isolated cluster, the crystallographic unit cell, and the powder sample. The calculations of the angular dependencies of the spin and orbital magnetic moments with the external magnetic induction direction reveal easy magnetization axes for each S = 1/2 molecular entity and the crystal. It also shows that the orbital magnetic moment dominates the spin magnetic moment for all directions. Our measurements confirm that the orbital magnetic moment contributes to 60% of the total magnetization for the powder, which is in excellent agreement with our theoretical predictions. An orbital magnetic moment greater than the spin magnetic moment is exceptional for 3d transition metal ions. The impact of crystal field strength and distortion, π back-bonding, spin-orbit coupling, and external magnetic induction was analyzed, leading to a deeper understanding of the spin and orbital magnetic anisotropies.

Published
2023
Full Text
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