Perovskite light-emitting diodes

Nature Electronics, Год журнала: 2022, Номер 5(4), С. 203 - 216

Опубликована: Апрель 21, 2022

Язык: Английский

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Chiral emission from resonant metasurfaces

Science, Год журнала: 2022, Номер 377(6611), С. 1215 - 1218

Опубликована: Сен. 8, 2022

Ultracompact sources of circularly polarized light are important for classical and quantum optical information processing. Conventional approaches generating chiral emission restricted to excitation power ranges fail provide high-quality radiation with perfect polarization conversion. We used the physics quasi-bound states in continuum demonstrate efficient controllable from resonant metasurfaces. Exploiting intrinsic chirality giant field enhancement, we revealed how simultaneously modify control spectra, patterns, spin angular momentum photoluminescence lasing without any injection. The superior characteristics promise multiple applications nanophotonics optics.

Язык: Английский

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Advances in the Application of Perovskite Materials

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Июль 10, 2023

Nowadays, the soar of photovoltaic performance perovskite solar cells has set off a fever in study metal halide materials. The excellent optoelectronic properties and defect tolerance feature allow to be employed wide variety applications. This article provides holistic review over current progress future prospects materials representative promising applications, including traditional devices (solar cells, light-emitting diodes, photodetectors, lasers), cutting-edge technologies terms neuromorphic (artificial synapses memristors) pressure-induced emission. highlights fundamentals, remaining challenges for each application, aiming provide comprehensive overview development status navigation research devices.

Язык: Английский

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Liquid crystal-templated chiral nanomaterials: from chiral plasmonics to circularly polarized luminescence

Light Science & Applications, Год журнала: 2022, Номер 11(1)

Опубликована: Июль 14, 2022

Chiral nanomaterials with intrinsic chirality or spatial asymmetry at the nanoscale are currently in limelight of both fundamental research and diverse important technological applications due to their unprecedented physicochemical characteristics such as intense light-matter interactions, enhanced circular dichroism, strong circularly polarized luminescence. Herein, we provide a comprehensive overview state-of-the-art advances liquid crystal-templated chiral nanomaterials. The chiroptical properties touched, design principles bottom-up synthesis strategies discussed. Different functional based on liquid-crystalline soft templates, including plasmonic luminescent nanomaterials, systematically introduced, underlying mechanisms, properties, potential emphasized. This review concludes perspective emerging applications, challenges, future opportunities fascinating can not only deepen our understanding fundamentals soft-matter chirality, but also shine light development advanced toward versatile optics, biology, catalysis, electronics, beyond.

Язык: Английский

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Exploiting the full advantages of colloidal perovskite nanocrystals for large-area efficient light-emitting diodes

Nature Nanotechnology, Год журнала: 2022, Номер 17(6), С. 590 - 597

Опубликована: Май 16, 2022

Язык: Английский

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Chiral molecular intercalation superlattices

Nature, Год журнала: 2022, Номер 606(7916), С. 902 - 908

Опубликована: Июнь 29, 2022

Язык: Английский

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Suppressing phase disproportionation in quasi-2D perovskite light-emitting diodes

Nature Communications, Год журнала: 2023, Номер 14(1)

Опубликована: Янв. 25, 2023

Abstract Electroluminescence efficiencies and stabilities of quasi-two-dimensional halide perovskites are restricted by the formation multiple-quantum-well structures with broad uncontrollable phase distributions. Here, we report a ligand design strategy to substantially suppress diffusion-limited disproportionation, thereby enabling better control. We demonstrate that extending π-conjugation length increasing cross-sectional area enables perovskite thin films dramatically suppressed ion transport, narrowed distributions, reduced defect densities, enhanced radiative recombination efficiencies. Consequently, achieved efficient stable deep-red light-emitting diodes peak external quantum efficiency 26.3% (average 22.9% among 70 devices cross-checked) half-life ~220 2.8 h under constant current density 0.1 12 mA/cm 2 , respectively. Our also exhibit wide wavelength tunability improved spectral stability compared existing diodes. These discoveries provide critical insights into molecular crystallization kinetics low-dimensional semiconductors for devices.

Язык: Английский

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A Chirality-Based Quantum Leap

ACS Nano, Год журнала: 2022, Номер 16(4), С. 4989 - 5035

Опубликована: Март 23, 2022

There is increasing interest in the study of chiral degrees freedom occurring matter and electromagnetic fields. Opportunities quantum sciences will likely exploit two main areas that are focus this Review: (1) recent observations chiral-induced spin selectivity (CISS) effect molecules engineered nanomaterials (2) rapidly evolving nanophotonic strategies designed to amplify light–matter interactions. On one hand, CISS underpins observation charge transport through nanoscopic structures favors a particular electronic orientation, resulting large room-temperature polarizations. Observations suggest opportunities for control design fabrication devices from bottom up, with atomic-scale precision molecular modularity. other chiral–optical effects depend on both spin- orbital-angular momentum photons could offer key advantages all-optical information technologies. In particular, amplification these interactions using rationally plasmonic dielectric provide approaches manipulate light intensity, polarization, phase confined nanoscale geometries. Any technology relies optimal transport, or optical readout, including logic, sensing, storage, may benefit properties. These properties can be theoretically experimentally investigated perspective, which has not yet been fully developed. uncharted implications once couplings transduction, manipulation information. This forward-looking Review provides survey experimental theoretical fundamentals chiral-influenced presents vision their possible future roles enabling

Язык: Английский

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Hierarchical self-assembly into chiral nanostructures

Chemical Science, Год журнала: 2021, Номер 13(3), С. 633 - 656

Опубликована: Ноя. 9, 2021

This review shows how chirality may be used for the design, construction and evolution of higher ordered complex chiral nanostructures through hierarchical self-assembly.

Язык: Английский

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Circular Polarized Light Emission in Chiral Inorganic Nanomaterials

Advanced Materials, Год журнала: 2022, Номер 35(34)

Опубликована: Янв. 13, 2022

Chiral inorganic nanostructures strongly interact with photons changing their polarization state. The resulting circularly polarized light emission (CPLE) has cross-disciplinary importance for a variety of chemical/biological processes and is essential development chiral photonics. However, the effects are often complex interpretation dependent on several structural parameters nanostructure. CPLE in nanostructured media multiple origins optical typically convoluted into single output. Analyzing data obtained nanoclusters, nanoparticles, nanoassemblies, nanocomposites from metals, chalcogenides, perovskite, other nanostructures, it shown here that there distinct groups nanomaterials which dominated either by luminescence (CPL) or scattering (CPS); also many they comparable. following points demonstrated: 1) CPL CPS contributions involve light-matter interactions at different levels; 2) contribution especially strong microparticles, composites; 3) engineering materials requires synergistic implementation effects. These findings expected to guide technological fields, including 3D displays, information storage, biosensors, spintronics, biological probes.

Язык: Английский

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