The spin selectivity effect in chiral materials

APL Materials, Год журнала: 2021, Номер 9(4)

Опубликована: Апрель 1, 2021

We overview experiments performed on the chiral induced spin selectivity (CISS) effect using various materials and experimental configurations. Through this survey of different material systems that manifest CISS effect, we identify several attributes are common to all systems. Among these ability observe for two point contact configurations, when one electrodes is magnetic, correlation between optical activity a material’s filtering properties. In addition, recent show does not require pure coherent charge transport electron polarization persists over hundreds nanometers in an ordered medium. Finally, issues still have be explored regarding mechanism. them role phonons electron–electron interactions.

Язык: Английский

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Chiral Induced Spin Selectivity

Chemical Reviews, Год журнала: 2024, Номер 124(4), С. 1950 - 1991

Опубликована: Фев. 16, 2024

Since the initial landmark study on chiral induced spin selectivity (CISS) effect in 1999, considerable experimental and theoretical efforts have been made to understand physical underpinnings mechanistic features of this interesting phenomenon. As first formulated, CISS refers innate ability materials act as filters for electron transport; however, more recent experiments demonstrate that displacement currents arising from charge polarization molecules lead without need net flow. With its identification a fundamental connection between symmetry materials, promises profound ubiquitous implications existing technologies new approaches answering age old questions, such homochiral nature life. This review begins with discussion different methods measuring then provides comprehensive overview known exhibit CISS-based phenomena before proceeding identify structure-property relations delineate leading models effect. Next, it identifies some physics, chemistry, biology. The ends critical assessment field comments future outlook.

Язык: Английский

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Materials for chiral light control

Nature Reviews Materials, Год журнала: 2023, Номер 8(6), С. 365 - 371

Опубликована: Март 13, 2023

Язык: Английский

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Synergy of 3D and 2D Perovskites for Durable, Efficient Solar Cells and Beyond

Chemical Reviews, Год журнала: 2023, Номер 123(15), С. 9565 - 9652

Опубликована: Июль 10, 2023

Three-dimensional (3D) organic-inorganic lead halide perovskites have emerged in the past few years as a promising material for low-cost, high-efficiency optoelectronic devices. Spurred by this recent interest, several subclasses of such two-dimensional (2D) begun to play significant role advancing fundamental understanding structural, chemical, and physical properties perovskites, which are technologically relevant. While chemistry these 2D materials is similar that 3D their layered structure with hybrid interface induces new emergent can significantly or sometimes subtly be important. Synergistic realized systems combine different exhibiting dimensionalities exploiting intrinsic compatibility. In many cases, weaknesses each alleviated heteroarchitectures. For example, 3D-2D demonstrate novel behavior neither would capable separately. This review describes how structural differences between give rise disparate properties, discusses strategies realizing mixed-dimensional various architectures through solution-processing techniques, presents comprehensive outlook use solar cells. Finally, we investigate applications beyond photovoltaics offer our perspective on perovskite semiconductor unrivaled tunability, efficiency, relevant durability.

Язык: Английский

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Control of light, spin and charge with chiral metal halide semiconductors

Nature Reviews Chemistry, Год журнала: 2022, Номер 6(7), С. 470 - 485

Опубликована: Июнь 27, 2022

Язык: Английский

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Core–Shell Three-Dimensional Perovskite Nanocrystals with Chiral-Induced Spin Selectivity for Room-Temperature Spin Light-Emitting Diodes

Journal of the American Chemical Society, Год журнала: 2022, Номер 144(22), С. 9707 - 9714

Опубликована: Май 16, 2022

We developed type-II core-shell nanocrystals (NCs) with a chiral low-dimensional perovskite shell and an achiral 3D MAPbBr3 core. The NCs exhibit spin-polarized luminescence at the first excitation band of core, which is due to chiral-induced spin selectivity (CISS) effect-governed spin-dependent shell-to-core electron transportation subsequent electron-hole recombination in preferred state transferred electrons determined by handness shell. For film, photoluminescence quantum yield (PLQY) 54% circularly polarized (CPL) maximum |glum| 4.0 × 10-3 are obtained room temperature. Finally, we achieved light-emitting diode (spin-LED), affording electroluminescence (CP-EL) |gCP-EL|of 6.0 under ambient conditions.

Язык: Английский

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Flexible Perovskite Solar Cells: From Materials and Device Architectures to Applications

ACS Energy Letters, Год журнала: 2022, Номер 7(4), С. 1412 - 1445

Опубликована: Март 22, 2022

Perovskite solar cells (PSCs) are being rapidly developed at a fiery stage due to their marvelous and fast-growing power conversion efficiency (PCE). Advantages such as high PCE, solution processability, tunable band gaps, flexibility make PSCs one of the research hot spots in energy field. Flexible (f-PSCs) owing power-to-weight ratios can be promising candidates serve sources mobile systems, space portable functional devices, so on. Herein, we give review on recent progress f-PSCs involving flexible substrates transparent electrodes, performance enhancement by optimizing layers, large-scale fabrication techniques, promotion strategies, potential applications. Furthermore, perspectives discussed future development f-PSCs.

Язык: Английский

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Perovskite metasurfaces with large superstructural chirality

Nature Communications, Год журнала: 2022, Номер 13(1)

Опубликована: Март 23, 2022

Recent attempts to synthesize hybrid perovskites with large chirality have been hampered by size mismatch and weak interaction between their structure the wavelength of light. Here we adopt a planar nanostructure design overcome these limitations realize all-dielectric perovskite metasurfaces giant superstructural chirality. We identify direct spectral correspondence near- far- field chirality, tune electric magnetic multipole moments resonant chiral metamolecules obtain anisotropy factor 0.49 circular dichroism 6350 mdeg. Simulations show that larger area could yield even higher optical activity, approaching theoretical limits. Our results clearly demonstrate advantages nanostructrure engineering for implementation photonic, optoelectronic, spintronic devices.

Язык: Английский

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Mutual Monomer Orientation To Bias the Supramolecular Polymerization of [6]Helicenes and the Resulting Circularly Polarized Light and Spin Filtering Properties

Journal of the American Chemical Society, Год журнала: 2022, Номер 144(17), С. 7709 - 7719

Опубликована: Апрель 11, 2022

We report on the synthesis and self-assembly of 2,15- 4,13-disubstituted carbo[6]helicenes 1 2 bearing 3,4,5-tridodecyloxybenzamide groups. The these [6]helicenes is strongly influenced by substitution pattern in helicene core that affects mutual orientation monomeric units aggregated form. Thus, 2,15-substituted derivative undergoes an isodesmic supramolecular polymerization forming globular nanoparticles maintain circularly polarized light (CPL) with glum values as high × 10-2. Unlike carbo[6]helicene 1, 4,13-substituted follows a cooperative mechanism generating helical one-dimensional fibers. As result this organization, [6]helicene exhibits unique modification its ECD spectral showing sign inversion at low energy, accompanied change CPL 1.2 10-3, thus unveiling example upon polymerization. These structures chiroptical activity, when deposited conductive surfaces, revealed highly efficient electron-spin filtering abilities, electron spin polarizations up to 80% for 60% 2, measured magnetic conducting atomic force microscopy.

Язык: Английский

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Circularly polarized perovskite luminescence with dissymmetry factor up to 1.9 by soft helix bilayer device

Matter, Год журнала: 2022, Номер 5(7), С. 2319 - 2333

Опубликована: Май 31, 2022

Язык: Английский

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