Steering Energy Transfer Pathways through Mn-Doping in Perovskite Nanocrystals

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Янв. 23, 2025

Modulation of singlet and triplet energy transfer from excited semiconductor nanocrystals to attached dye molecules remains an important criterion for the design light-harvesting assemblies. Whereas one can consider selection donor acceptor with favorable energetics, spectral overlap, kinetics as a means direct pathways, it is not obvious how control characteristics nanocrystal itself. By doping CsPb(Cl0.7Br0.3)3 Mn2+, we have now succeeded in increasing nanocrystals. The between Mn-CsPb(Cl0.7Br0.3)3 cyanine (4,5-benzoindotricarbocyanine) show participation band gap states Mn2+-activated transfer. tracking emission well transient absorption features, were able distinguish two independent pathways. exciton unchanged (2%), concentration Mn2+ perovskite results increase yield up 17.5%. ability enhance through Mn-doping opens new opportunities develop optoelectronic display devices.

Язык: Английский

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Concentration Dependent Modulation in Optoelectronic Traits of Self‐Collated CsPbBr₃ Perovskites

Small, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Self-collation of perovskite nanocrystals into superstructures larger length scales has been growing in research interest due to their dramatically enhanced performance various nano-devices, modulating optical and electrical traits. Herein, the unique concentration-dependent self-assembly phenethylamine (PEA)-capped CsPbBr3 (PCPB) perovskites spanning a size range nano micron level without structural phase alteration is infered. By optimizing synthetic parameters like PEA amount, solvents, self-coalescence PCPB crystal growth controlled. Furthermore, highest-concentrated (C5) improved charge transfer (CT) efficiency 1,4-Napthoquinone (NPQ), corroborated with stronger binding between C5 NPQ, compared lowest-concentrated (C1). Incorporating NPQ such enhances local conductance unveiling CT-induced current rise, while detrimental insulating property molecules reduces C1. These outcomes offer foundation for tailoring properties self-assembled optoelectronic devices energy conversion technologies.

Язык: Английский

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Light–matter interaction at the nano- and molecular scale

The Journal of Chemical Physics, Год журнала: 2025, Номер 162(14)

Опубликована: Апрель 8, 2025

Язык: Английский

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Hole-Induced Charge Transfer Dynamics at the CsPbBr₃ Perovskite Quantum Dot Interface

The Journal of Physical Chemistry C, Год журнала: 2024, Номер unknown

Опубликована: Окт. 3, 2024

Язык: Английский

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