Chirality-Dependent Structural Transformation in Chiral 2D Perovskites under High Pressure DOI

Meng‐En Sun,

Yonggang Wang, Fei Wang

и другие.

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(16), С. 8908 - 8916

Опубликована: Апрель 14, 2023

Chiral perovskites have attracted considerable attention owing to their potential applications in spintronic- and polarization-based optoelectronic devices. However, the structural chirality/asymmetry transfer mechanism between chiral organic ammoniums achiral inorganic frameworks is still equivocal, especially under extreme conditions, as systematic differences been rarely explored. Herein, we successfully synthesized a pair of new enantiomeric perovskite (S/R-3PYEA)PbI4 (3PYEA2+ = C5NH5C2H4NH32+) an (rac-3PYEA)PbI4. Hydrostatic pressure was used, for first time, systematically investigate evolution optical behavior At approximately 7.0 GPa, exhibits chirality-dependent transformation with bandgap "red jump" dramatic piezochromism from translucent red opaque black. Upon further compression, previously unreported chirality-induced negative linear compressibility (NLC) achieved (S/R-3PYEA)PbI4. High-pressure characterizations first-principles calculations demonstrate that pressure-driven homodirectional tilting homochiral ammonium cations strengthens interactions S/R-3PYEA2+ Pb–I frameworks, inducing formation asymmetric hydrogen bonds N–H···I–Pb The enhanced H-bonding break symmetry trigger greater degree in-plane out-of-plane distortion [PbI6]4– octahedra, which are responsible phase transition NLC, respectively. Nevertheless, balanced H-bonds incurred by equal proportions S-3PYEA2+ R-3PYEA2+ counteract force, leading absence transition, spectral jump", NLC

Язык: Английский

Chiral Hybrid Germanium(II) Halide with Strong Nonlinear Chiroptical Properties DOI Open Access
Hebin Wang, Junzi Li,

Haolin Lu

и другие.

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(41)

Опубликована: Авг. 23, 2023

Due to the pronounced anisotropic response circularly polarized light, chiral hybrid organic-inorganic metal halides have been regarded as promising candidates for application in nonlinear chiroptics, especially second-harmonic generation circular dichroism (SHG-CD) effect. However, designing novel lead-free with large anisotropy factors and high laser-induced damage thresholds (LDT) of SHG-CD remains challenging. Herein, we develop first germanium halide, (R/S-NEA)3 Ge2 I7 ⋅H2 O (R/S-NGI), systematically investigated its linear chiroptical properties. S-NGI R-NGI exhibit (gSHG-CD ) 0.45 0.48, respectively, along a LDT 38.46 GW/cm2 ; these were highest values among reported halides. Moreover, effective second-order optical coefficient could reach up 0.86 pm/V, which was 2.9 times higher than that commercial Y-cut quartz. Our findings facilitate new avenue toward halides, their implementation applications.

Язык: Английский

Процитировано

45
The first chiral cerium halide towards circularly-polarized luminescence in the UV region DOI
Xinyi Niu, Zhichao Zeng, Zhaoyu Wang

и другие.

Science China Chemistry, Год журнала: 2024, Номер 67(6), С. 1961 - 1968

Опубликована: Фев. 7, 2024

Язык: Английский

Процитировано

32
High‐Performance Organic Narrow Dual‐Band Circular Polarized Light Detection for Encrypted Communications and Color Imaging DOI
Q. Wang,

Jinying Bao,

Yajie Zhang

и другие.

Advanced Materials, Год журнала: 2024, Номер 36(16)

Опубликована: Янв. 10, 2024

Conventional circularly polarized light (CPL) detectors necessitate several optical elements, posing difficulties in achieving miniature and integrated devices. Recently developed organic CPL require no additional elements but usually suffer from low detectivity or asymmetry factor (g-factor). Here, an detector with excellent a high g-factor is fabricated. By employing inverted quasi-planar heterojunction (IPHJ) structure incorporating liquid crystal film, outstanding of 1.62 developed. Unfavorable charge injection effectively suppressed by the IPHJ structure, which reduces dark current photodetector. Consequently, left 6.16 × 10

Язык: Английский

Процитировано

19
Polar Aromatic Two‐dimensional Dion‐Jacobson Halide Perovskites for Efficient Photocatalytic H2 Evolution DOI
Yu Peng,

Yang Zhang,

Xing Wang

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(15)

Опубликована: Фев. 10, 2024

Abstract Polar materials with spontaneous polarization ( P s ) have emerged as highly promising photocatalysts for efficient photocatalytic H 2 evolution owing to the ‐enhanced photogenerated carrier separation. However, traditional inorganic polar often suffer from limitations such wide band gaps and poor transport, which hinders their efficiency. Here, we rationally synthesized a series of isostructural two‐dimensional (2D) aromatic Dion–Jacobson (DJ) perovskites, namely (2‐(2‐Aminoethyl)pyridinium)PbI 4 (2‐APDPI), (3‐(2‐Aminoethyl)pyridinium)PbI (3‐APDPI), (4‐(2‐Aminoethyl)pyridinium)PbI (4‐APDPI), where 2‐APDPI 4‐APDPI crystalize in space groups piezoelectric constants d 33 approximately 40 pm V −1 3‐APDPI adopts centrosymmetric structure. Strikingly, ‐facilitated separation carriers, exhibit 3.9‐ 2.8‐fold increase, respectively, compared 3‐APDPI. As pioneering study, this work provides an approach exploring new highlights potential promoting evolution.

Язык: Английский

Процитировано

18
Roadmap on metal-halide perovskite semiconductors and devices DOI Creative Commons
Ao Liu, Jun Xi, Hanlin Cen

и другие.

Materials Today Electronics, Год журнала: 2025, Номер unknown, С. 100138 - 100138

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

2
Circularly Polarized Perovskite Photodetector with Photocurrent Dissymmetry Factors of up to 1.95 Enabled by Liquid Crystal DOI Creative Commons

Yifan Feng,

Guanfeng Gao,

Xinyi Wen

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 12, 2025

Abstract Conventional circularly polarized light (CPL) detectors face a grand challenge with device integration and miniaturization because of the need for complex optical components. Chiral perovskites have recently emerged as interesting materials CPL that do not require additional elements but struggle to achieve high photocurrent dissymmetry factor ( g Iph ). Herein, simple promising strategy is reported high‐performance perovskite photodetectors (CP‐PPDs) exceptionally . The CP‐PPDs are fabricated using single crystals in combination free‐standing cholesteric liquid crystal polymer films (P‐CLC) empower trigger an optically selective response. By tuning photonic bandgap P‐CLC film, spectral response tunable over broad range wavelengths. devices show detectivities 6.8 × 10 13 5.1 Jones at 520 405 nm, respectively. Importantly, PDs exhibit factors up 1.95 which highest date CP‐PPDs. Furthermore, proof‐of‐concept, CP‐PPD arrays demonstrated use image sensing.

Язык: Английский

Процитировано

2
Multichannel Control of Multiferroicity in Single-Component Homochiral Organic Crystals DOI
Wei‐Qiang Liao, Yu‐Ling Zeng, Yuan‐Yuan Tang

и другие.

Journal of the American Chemical Society, Год журнала: 2021, Номер 143(51), С. 21685 - 21693

Опубликована: Дек. 20, 2021

A ferroelectric/ferroelastic is a material whose spontaneous polarization/strain can be switched by applying an external electric field/mechanical stress. However, the optical control of remains relatively unexplored in crystalline materials, although photoirradiation stands out as nondestructive, noncontact, and remote-controlled stimulus beyond stress or field. Here, we present two new organic single-component homochiral photochromic multiferroics, (R)- (S)-N-3,5-di-tert-butylsalicylidene-1–4-bromophenylethylamine (SA-Ph-Br(R) SA-Ph-Br(S)), which show full phase transition 222F2 type at 336 K. Under photoirradiation, their quickly within seconds reversibly between phases with respective enol trans-keto forms triggered structural photoisomerizations. In addition, they possess superior acoustic impedance characteristic value ∼2.42 × 106 kg·s–1·m–2, lower than that polyvinylidene fluoride (PVDF, (3.69–4.25) kg·s–1·m–2), better match human tissues. This work realizes for first time multiple ferroic orders crystals ultralow simultaneously controlled coupled three physical channels (electric, stress, light fields), suggesting great potential multichannel data storage, optoelectronics, related applications compatible all-organic electronics

Язык: Английский

Процитировано

72
Induction of Chiral Hybrid Metal Halides from Achiral Building Blocks DOI
Yongshen Zheng, Xiao Han,

Puxin Cheng

и другие.

Journal of the American Chemical Society, Год журнала: 2022, Номер 144(36), С. 16471 - 16479

Опубликована: Сен. 5, 2022

Chiral hybrid organic-inorganic metal halides (HOMHs) with intrinsic noncentrosymmetry have shown great promise for broad applications in chiroptoelectronics, spintronics, and ferroelectronics. However, the construction strategies chiral HOMHs often involve building blocks their frameworks, which greatly limit chemical diversity. Here, we take advantage of a induction approach successfully constructed series HOMHs, DMA4MX7 (DMA = dimethylammonium, M Sb or Bi, X Cl Br), based on achiral precursors. The resulting products demonstrate clear enantioenrichment, as confirmed by single-crystal X-ray diffraction analysis solid-state circular dichroism (CD) spectroscopy. enables superior nonlinear optical performances very high thermal stability laser resistance. successful employment such might facilitate libraries HOMH crystals from diverse precursors, particular those into it is not easy to introduce centers, would thus pave new way rational preparation application materials.

Язык: Английский

Процитировано

61
Robust Spin-Dependent Anisotropy of Circularly Polarized Light Detection from Achiral Layered Hybrid Perovskite Ferroelectric Crystals DOI
Xiaoqi Li,

Fafa Wu,

Yunpeng Yao

и другие.

Journal of the American Chemical Society, Год журнала: 2022, Номер 144(31), С. 14031 - 14036

Опубликована: Авг. 1, 2022

Circularly polarized light (CPL) detection has sparked overwhelming research interest for its widespread chiroptoelectronic and spintronic applications. Ferroelectric materials, especially emerging layered hybrid perovskite ferroelectrics, exhibiting striking bulk photovoltaic effect (BPVE) present significant possibilities CPL by a distinctive working concept. Herein, the first time, we demonstrate realization of robust angular anisotropy in new ferroelectric crystal (CPA)2FAPb2Br7 (1, CPA is chloropropylammonium, FA formamidinium), which crystallized an optically active achiral polar point group. Benefiting from notable spontaneous polarization (5.1 μC/cm2) excellent semiconducting characteristics, single crystals 1 exhibit remarkable BPVE under illumination, with high current on/off switching ratio (ca. 103). More intriguingly, driven carrier drift originating spin-dependent displays highly sensitive self-powered performance, showing factor up to 0.98, far more than those achieved material intrinsic chirality. This work provides unprecedented approach realizing detection, sheds on further design ferroelectrics chiral photonic

Язык: Английский

Процитировано

50
Two-photon absorption in halide perovskites and their applications DOI Creative Commons
Junsheng Chen, Wei Zhang, Tõnu Pullerits

и другие.

Materials Horizons, Год журнала: 2022, Номер 9(9), С. 2255 - 2287

Опубликована: Янв. 1, 2022

This review will help readers to have a comprehensive and in-depth understanding of the research field two-photon absorption halide perovskites from microscopic mechanisms applications.

Язык: Английский

Процитировано

49