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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Enhanced Photocurrent of All-Inorganic Two-Dimensional Perovskite Cs₂PbI₂Cl₂ via Pressure-Regulated Excitonic Features

Journal of the American Chemical Society, Год журнала: 2021, Номер 143(6), С. 2545 - 2551

Опубликована: Янв. 19, 2021

Pressure processing is efficient to regulate the structural and physical properties of two-dimensional (2D) halide perovskites which have been emerging for advanced photovoltaic light-emitting applications. Increasing numbers studies reported pressure-induced and/or enhanced emission in 2D perovskites. However, no research has focused on their photoresponse under pressure tuning. It also unclear how change affects excitonic features, govern optoelectronic Herein, we report significantly photocurrents all-inorganic perovskite Cs2PbI2Cl2, achieving over 3 orders magnitude increase at industrially achievable level 2 GPa comparison with its initial photocurrent. Lattice compression effectively regulates features reducing exciton binding energy considerably from 133 meV ambient conditions 78 2.1 GPa. Impressively, such a reduced Cs2PbI2Cl2 comparable values typical 3D (MAPbBr3 MAPbI3), facilitating dissociating excitons into free carriers enhancing Further pressurization leads layer-sliding-induced phase transition an anomalous negative linear compression, not observed so far other Our findings reveal dramatically by regulating and, more broadly, provide new insights materials design toward extraordinary properties.

Язык: Английский

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Pressure‐Induced Emission toward Harvesting Cold White Light from Warm White Light

Angewandte Chemie International Edition, Год журнала: 2021, Номер 60(18), С. 10082 - 10088

Опубликована: Март 24, 2021

Abstract The pressure‐induced emission (PIE) behavior of halide perovskites has attracted widespread attention and potential application in pressure sensing. However, high‐pressure reversibility largely inhibits practical applications. Here, we describe the enhancement non‐doping control color temperature two‐dimensional perovskite (C 6 H 5 CH 2 NH 3 ) PbCl 4 ((PEA) nanocrystals (NCs) through processing. A remarkable times PIE was achieved at a mild 0.4 GPa, which highly associated with enhanced radiative recombination self‐trapped excitons. Of particular importance is retention 1.6 dense (PEA) NCs upon complete release pressure, accompanied by change from “warm” (4403 K) to “cold” white light 14295 K. irreversible structural amorphization, facilitates remaining local distortion inorganic Pb‐Cl octahedra respect steric hindrance organic PEA + cations, should be greatly responsible for quenched high‐efficiency photoluminescence.

Язык: Английский

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Quantum dot-integrated GaN light-emitting diodes with resolution beyond the retinal limit

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

Опубликована: Апрель 6, 2022

Abstract Near-eye display technology is a rapidly growing field owing to the recent emergence of augmented and mixed reality. Ultrafast response time, high resolution, luminance, dynamic range for outdoor use are all important non-pixelated, pupil-forming optics. The current mainstream technologies using liquid crystals organic materials cannot satisfy these conditions. Thus, finely patterned light-emissive solid-state devices with integrated circuits often proposed meet requirements. In this study, we several advanced design prototype microscale light-emitting diode (LED) arrays quantum dot (QD)-based color conversion. Wafer-scale epilayer transfer bond-before-pattern technique were used directly integrate 5-µm-scale GaN LED on foreign silicon substrate. Notably, lithography-level alignment bottom wafer opens up possibility ultrafast operation circuit integration. Spectrally pure conversion solvent-free QD patterning also achieved an elastomeric topographical mask. Self-assembled monolayers applied selectively alter surface wettability completely dry process. final emissive-type array integrating QD, GaN, resulted in 1270 PPI resolution that far beyond retinal limit.

Язык: Английский

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Brightening Blue Photoluminescence in Nonemission MOF‐2 by Pressure Treatment Engineering

Advanced Materials, Год журнала: 2023, Номер 35(23)

Опубликована: Март 24, 2023

As equally essential as the synthesis of new materials, maneuvering structure configurations can endow brand-new functional properties to existing which is also one core goals in community. In this respect, pressure-induced emission (PIE) that triggers photoluminescence (PL) nonemission materials an emerging stimuli-responsive smart technology. PIE paradigms, harvesting bright PL at ambient conditions, however, has remained elusive. Herein, a remarkable phenomenon reported initially Zn(BDC)(DMF)(H2 O) (MOF-2), shows blue-emission 455 nm under pressure. Intriguingly, blue with excellent quantum yield up 70.4% unprecedentedly retained conditions upon decompression from 16.2 GPa. The detailed structural analyses combined density theory calculations reveal hydrogen bonding cooperativity effect elevates powerfully rotational barrier linker rotor 3.87 eV mol-1 initial 0.91 through pressure treatment. downgrade freedom turns on MOF-2 after releasing completely. This first case conditions. These findings offer platform for creation promising alternatives high-performance based counterparts.

Язык: Английский

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Recent progress with one-dimensional metal halide perovskites: from rational synthesis to optoelectronic applications

NPG Asia Materials, Год журнала: 2023, Номер 15(1)

Опубликована: Фев. 24, 2023

Abstract Metal halide perovskites can be readily synthesized, they exhibit tunable physical properties and excellent performance, are heavily studied optoelectronic materials. Compared to the typical three-dimensional perovskites, morphological-level one-dimensional (1D) nanostructures enable charge transport photon propagation with low exciton binding energies long charge-carrier diffusion lengths, while molecular-level 1D good compositional structural flexibilities, highly bandgaps, strong quantum confinement effects, ambient stabilities. The natures of these emerging enhance performance devices. Herein, we highlight recent progress realized in syntheses characterizations both morphological- structures, compositions, properties, as well their photovoltaic, light-emission, photodetection applications. In addition, current challenges, future prospects, promising research directions discussed provide guidance advancing field perovskites.

Язык: Английский

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Pressure-Driven Reverse Intersystem Crossing: New Path toward Bright Deep-Blue Emission of Lead-Free Halide Double Perovskites

Journal of the American Chemical Society, Год журнала: 2021, Номер 143(37), С. 15176 - 15184

Опубликована: Сен. 10, 2021

Maximizing the regeneration of singlet excitons remains a considerable challenge in deep-blue emission systems to obtain low-cost, high-efficiency fluorescent materials. However, formation long-lifetime triplet generally dominates radiative process, making it greatly difficult harvest with high color purity because depression excitons. Here, very bright double perovskite Cs2Na0.4Ag0.6InCl6 alloyed Bi doping (CNAICB) was successfully achieved by pressure-driven reverse intersystem crossing (RISC), an abnormal photophysical process energy transfer from excited state back singlet. Therein, inherently broad CNAICB associated self-trapped (STEs) at states, whereas recombination STEs populated states responsible for observed emission. Moreover, corresponds Commission Internationale de L'Eclairage (CIE) coordinates (0.16, 0.06) 5.01 GPa, which meets requirement Rec. 2020 display standards. Likewise, pressure introduced as efficient tool rule out possibility free and clarify long-standing conventional dispute over origin low-wavelength Cs2AgInCl6. Our study not only demonstrates that can be robust means boost but also provides deep insights into structure-property relationship lead-free perovskites.

Язык: Английский

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Ab initio nonadiabatic molecular dynamics of charge carriers in metal halide perovskites

Nanoscale, Год журнала: 2021, Номер 13(23), С. 10239 - 10265

Опубликована: Янв. 1, 2021

Atomistic details govern quantum dynamics of charge carriers in metal halide perovskites, which exhibit properties solid state and molecular semiconductors, as revealed by time-domain density functional theory nonadiabatic dynamics.

Язык: Английский

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Regulating off-centering distortion maximizes photoluminescence in halide perovskites

National Science Review, Год журнала: 2020, Номер 8(9)

Опубликована: Ноя. 27, 2020

Metal halide perovskites possess unique atomic and electronic configurations that endow them with high defect tolerance enable high-performance photovoltaics optoelectronics. Perovskite light-emitting diodes have achieved an external quantum efficiency of over 20%. Despite tremendous progress, fundamental questions remain, such as how structural distortion affects the optical properties. Addressing their relationships is considerably challenging due to scarcity effective diagnostic tools during property tuning well limited tunability achievable by conventional methods. Here, using pressure chemical methods regulate metal off-centering distortion, we demonstrate giant photoluminescence (PL) in both intensity (>20 times) wavelength (>180 nm/GPa) highly distorted [CH3NH3GeI3, HC(NH2)2GeI3, CsGeI3]. Using advanced situ high-pressure probes first-principles calculations, quantitatively reveal a universal relationship whereby regulating level towards 0.2 leads best PL performance perovskites. By applying this principle, intense can still be induced substituting CH3NH3+ Cs+ control (CH3NH3)1-xCsxGeI3, where substitution plays similar role pressure. The compression fully substituted sample CsGeI3 further tunes optimal value at 0.7 GPa, which maximizes emission 10-fold enhancement. This work not only demonstrates quantitative between but also illustrates use knowledge gained from research achieve desired properties ambient

Язык: Английский

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Enhanced Photoluminescence and Photoresponsiveness of Eu³⁺ Ions‐Doped CsPbCl₃ Perovskite Quantum Dots under High Pressure

Advanced Functional Materials, Год журнала: 2021, Номер 31(31)

Опубликована: Май 27, 2021

Abstract Metal halide perovskite quantum dots (QDs) have garnered tremendous attention in optoelectronic devices owing to their excellent optical and electrical properties. However, these QDs are plagued by pressure‐induced photoluminescence (PL) quenching, which greatly restricts potential applications. Herein, the unique properties of Eu 3+ ‐doped CsPbCl 3 under high pressure reported. Intriguingly, PL ions displays an enhancement with up 10.1 GPa still preserves a relatively intensity at 22 GPa. The structural analysis indicates that sample experiences isostructural phase transition approximately 1.53 GPa, followed amorphous state evolution, is simulated confirmed through density functional theory calculations. can be associated enhanced energy transfer rate from excitonic ions. photoelectric performance compression preserved upon release pressure, attributed decreased defect increased carrier mobility induced pressure. This work enriches understanding high‐pressure behavior rare‐earth‐doped luminescent materials proves technique promising way design realize superior materials.

Язык: Английский

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