A Polar Two-Dimensional Lead-Free Hybrid Perovskite for Self-Powered Polarization-Sensitive Photodetection

Inorganic Chemistry Frontiers, Год журнала: 2024, Номер 11(15), С. 4611 - 4618

Опубликована: Янв. 1, 2024

The first polar 2D lead-free hybrid perovskite (4BrPEA) 3 BiI 6 was synthesized by reducing the occupancy rate of Bi 3+ ions, and self-powered polarization-sensitive photodetector achieved a large photocurrent anisotropy factor 2.16.

Язык: Английский

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Chiral 2D and quasi-2D hybrid organic inorganic perovskites: from fundamentals to applications

Chemical Communications, Год журнала: 2024, Номер 60(70), С. 9310 - 9327

Опубликована: Янв. 1, 2024

Chiral 2D and quasi-2D hybrid organic-inorganic perovskites (HOIPs) are emerging as promising materials for a variety of applications principally related to optoelectronics spintronics, thanks the combined benefits deriving from both chiral cation perovskite structure. Since its recent birth, this research field is tremendously growing, focalizing on chemical composition tuning unveil influence functional properties well developing devices practical applications. In review, we focused HOIPs, firstly providing an overview their chiroptical behaviour followed by potential exploitation in investigated so far various applicative fields.

Язык: Английский

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Giant chiral amplification of chiral 2D perovskites via dynamic crystal reconstruction

Science Advances, Год журнала: 2024, Номер 10(34)

Опубликована: Авг. 21, 2024

Chiral hybrid perovskites show promise for advanced spin-resolved optoelectronics due to their excellent polarization-sensitive properties. However, chiral developed date rely solely on the interaction between organic ligand cations exhibiting point chirality and an inorganic framework, leading a poorly ordered short-range system. Here, we report powerful method overcome this limitation using dynamic long-range organization of guided by incorporation dopants, which induces strong interactions dopants cations. The additional interplay with reorganizes morphological crystallographic properties perovskites, notably enhancing asymmetric behavior 2D more than 10-fold, along highest dissymmetry factor photocurrent (

Язык: Английский

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Unprecedented Ultraviolet Circularly Polarized Light‐Dependent Anomalous Photovoltaics in Chiral Hybrid Perovskites

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 15, 2025

Abstract Circularly Polarized Light (CPL)‐dependent anomalous photovoltaic effect (APVE), characterized by light helicity‐manipulated steady photocurrent and above‐bandgap photovoltage, has demonstrated significant potential in the fields of photoelectronic photovoltaics. However, exploiting CPL‐dependent APVE chiral hybrid perovskites, a promising family with intrinsic chiroptical activity non‐centrosymmetric structure, remains challenging. Here, leveraging flexible structural design alternating cations intercalation‐type APV, for first time, is achieved perovskites. Specifically, introducing lone pair electrons into organic layers to greatly amplify polarization, [(R)‐PPA](MOPA)PbBr 4 ( 2‐R ) (PPA = 1‐phenylpropylammonium, MOPA 3‐methoxypropylammonium) exhibit an photovoltage 6.50 V E g 3.01 eV) under ultraviolet (UV) illumination. Strikingly, profiting from natural optical unprecedented UV APV realized , driving high distinguishability between right‐hand left‐hand CPLs large anisotropy factor Iph 0.33. This study pioneers realization within perovskite, advancements optoelectronic device technologies.

Язык: Английский

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Dramatical enhancement of circular dichroism in chiral hybrid perovskites via carboxylic hydrogen bond engineering

Science China Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 13, 2025

Язык: Английский

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