Structural Mechanisms of Quasi-2D Perovskites for Next-Generation Photovoltaics

Nano-Micro Letters, Год журнала: 2025, Номер 17(1)

Опубликована: Фев. 8, 2025

Quasi-two-dimensional (2D) perovskite embodies characteristics of both three-dimensional (3D) and 2D perovskites, achieving the superior external environment stability structure perovskites alongside high efficiency 3D perovskites. This effect is realized through critical structural modifications in device fabrication. Typically, have an octahedral structure, generally ABX3, where organic ammonium cation (A') participates forming with A'(n) (n = 1 or 2) sandwiched between A(n-1)B(n)X(3n+1) layers. Depending on whether A' a monovalent divalent cation, are classified into Ruddlesden-Popper Dion-Jacobson perovskite, each generating different structures. Although achieves similar effects, they incorporate distinct mechanisms their formation. And according to these structures, various properties appear, additive optimizing methods increase also exist In this review, scientific understanding engineering perspectives quasi-2D investigated, optimal optimization discussed provide insight field.

Язык: Английский

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Blue perovskite LEDs: A comprehensive review of emission control strategies for enhanced performance

Coordination Chemistry Reviews, Год журнала: 2025, Номер 528, С. 216425 - 216425

Опубликована: Янв. 4, 2025

Язык: Английский

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Nanocrystalline Perovskites for Bright and Efficient Light‐Emitting Diodes

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 19, 2025

Abstract Nanocrystalline perovskites have driven significant progress in metal halide perovskite light‐emitting diodes (PeLEDs) over the past decade by enabling spatial confinement of excitons. Consequently, three primary categories nanocrystalline emerged: nanoscale polycrystalline perovskites, quasi‐2D and nanocrystals. Each type has been developed to address specific challenges enhance efficiency stability PeLEDs. This review explores representative material design strategies for these correlating them with exciton recombination dynamics optical/electrical properties. Additionally, it summarizes trends decade, outlining four distinct phases development. Lastly, this addresses remaining proposes a potential further advance PeLED technology toward commercialization.

Язык: Английский

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Intramolecular hydrogen bonds assist in controlling the quantum well distribution in quasi-2D perovskites for efficient pure-blue perovskite light-emitting diodes

Journal of Materials Chemistry C, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Use of an o -F-PEABr ligand containing intramolecular hydrogen bond can effectively suppress low- n phases in quasi-2D perovskites. The resultant light-emitting diodes achieve a maximum efficiency 7.55% and pure blue emission at 475 nm.

Язык: Английский

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