Excitation-mode-selective emission through multiexcitonic states in a double perovskite single crystal

Light Science & Applications, Journal Year: 2025, Volume and Issue: 14(1)

Published: Jan. 2, 2025

Abstract Low-dimensional lead-free metal halide perovskites are highly attractive for cutting-edge optoelectronic applications. Herein, we report a class of scandium-based double perovskite crystals comprising antimony dopants that can generate multiexcitonic emissions in the ultraviolet, blue, and yellow spectral regions. Owing to zero-dimensional nature crystal lattice minimizes energy crosstalk, different excitonic states be selectively excited by ultraviolet light, X-ray irradiation, mechanical action, enabling dynamic control steady/transient-state features modulating excitation modes. Remarkably, transparent exhibits efficient white photoluminescence (quantum yield >97%), blue emission with long afterglow (duration >9 h), high-brightness self-reproducible violet-blue mechanoluminescence. These findings reveal exceptional capability low-dimensional integrating various luminescence, offering exciting opportunities multi-level data encryption all-in-one authentication technologies.

Language: Английский

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Emerging 0D Hybrid Metal Halide Luminescent Glasses

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

0D hybrid metal halide (HMH) luminescent glasses have garnered significant attentions for its chemical diversity in optoelectronic applications and it also retains the skeleton connectivity coordination mode of crystalline counterparts while exhibiting various physics/chemistry characteristics distinct from states. However, understanding glass-forming ability specific structural origins underpinning properties HMH remains elusive. In this review, is started solid-liquid phase transition thermodynamic analysis HMHs formed through melt-quenching, summarize current compounds capable stably forming glassy phases via design. The characterization methods are further discussed highlight exceptional transparency, properties, glass crystallization behaviors. Moreover, application prospects demonstrated by these been presented accordingly X-ray detection imaging, anti-counterfeiting, information encryption. Finally, perspective offered into future development emerging family their applications.

Language: Английский

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Component/Stimulus‐Dependent Multi‐Exciton Emission in Zr(IV)‐Based Organic Metal Halides Triggered by Supramolecular Assembly and Antimony Doping

Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 30, 2025

Abstract Recently, Sb 3+ ‐activated 0D Zr(IV)‐based metal halides have gained enormous attention for their unique optical properties. However, realizing efficient white emission and multiple reversible emissions in a single system remains great challenge. Parallelly, the currently reported organic are mainly through aimless regulation of type A‐site cations, severely limiting development. Herein, all‐inorganic Cs 2 ZrCl 6 :Sb is employed as conformational model, three different compounds ‐doped [18‐crown‐6@A] (A = K, Rb, Cs) developed via supramolecular assembly. All show tunable with luminous efficiency 91.28% [18‐crown‐6@K] , 84.84% [18‐crown‐6@Rb] 78.63% [18‐crown‐6@Cs] which shall stem from ‐induced multi‐exciton [SbCl ] 3− octahedron. Particularly, strong interaction can enhance structural rigidity suppress nonradiative transitions, dominated reason exhibits emission. The component/excitation/temperature/moisture‐dependent PL switching characteristics observed allows to demonstrate applications advanced anti‐counterfeiting information encryption. Moreover, single‐component light‐emitting diode also fabricated, shows high color rendering index 96.1. Therefore, work provides feasible scheme designing Zr(IV) fascinating

Language: Английский

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Unlocking Full-Spectrum Brilliance: Dimensional Regulation in Lead-Free Metal Halides for Superior Photoluminescence

Nano Letters, Journal Year: 2024, Volume and Issue: 24(46), P. 14686 - 14694

Published: Nov. 7, 2024

Lead-free metal halides with tunable structures have emerged as a new class of optoelectronic materials. The arrangement halide polyhedra defines their structural dimensionality and serves key factor influencing optical properties. To investigate this, we synthesized four different antimony (Sb)-doped indium (In)-based halides, all which possess zero-dimensional (0D) electronic but exhibit 3D, 2D, 1D, 0D at the molecular level. With decreasing dimensionality, self-trapped exciton (STE) emission shows red shift peak position from 496 to 663 nm. We revealed that is caused by increased distortion [SbCl

Language: Английский

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Sb3+/Sm3+ co-doped Cs2NaGdCl6 double perovskite: a promising candidate for the singel-component based WLED lighting with high qualtiy

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

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Tailoring Self‐Trapped Exciton Emission in 0D Indium‐Based Perovskites by Solvent‐Induced Crystal Structure Engineering

Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Abstract 0D indium‐based all‐inorganic metal halide perovskites offer great potential for multifunctional applications but face the challenges of poor structural adjustability and an incomplete dynamic picture self‐trapped exciton (STE) emissions. Here, a novel Cs 4 InCl 7 single crystal is developed as solvation bridge phase transformations to either 2 5 ·H O via water or into 3 6 by methanol. The diversified structures not only enrich emission colors also difference in coordination number symmetry + , laying foundations comprehending influence A‐site on STE Steady‐state transient spectroscopy together with density functional theory simulations, reveal that low geometry charge octahedron facilitate excited state distortions, leading strong second‐order Jahn‐Teller (SOJT) effect large Stokes shift Multicolor tuning Sb 3+ ‐doped under solvent heat stimuli enables extended optical anti‐counterfeiting, temperature sensing, sensors. work offers improved understanding SOJT manipulation atomic engineering lead‐free sheds light their broad practical applications.

Language: Английский

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Pseudohalide Anions Driven Structural Modulation in Distorted Tetrahedral Manganese(II) Hybrids toward Tunable Green‐Red Emissions

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 26, 2024

Mn(II)-based halides have recently garnered significant interest as emerging luminescence materials for diverse photonic applications. Generally, Mn(II) hybrids with tetrahedral coordination show green emission, however, ones octahedral give red emission. Herein, we design the synthesis of pseudohalide hybrids, (RPh

Language: Английский

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Organic−Inorganic Hybrid Perovskite-Like Indium Chloride with Strong Red Emission

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 13, 2025

Low-dimensional organic-inorganic hybrid metal halide materials have attracted widespread attention due to their excellent and tunable photoelectric properties. However, the low intrinsic photoluminescence quantum yields (PLQYs) limit further applications in optoelectronic devices. Here, we report synthesis of lead-free zero-dimensional indium chloride crystals, (FA)3InCl6: xSb3+, with strong red-light emission through controlled Sb3+ doping. The optimal composition, 20.16% Sb3+, exhibits PLQY up 30% emits red broadband light centered at 690 nm. enhancement doped samples was investigated by combining temperature-dependent wavelength-dependent spectra, revealing self-trapped exciton (STE) recombination process. clear elucidation complexation process has provided a solid theoretical basis for optimization material properties, which is great significance development new light-emitting materials. Far-red phosphor-converted LED devices been constructed these demonstrate stable efficient various voltages, exhibiting superior stability. This study highlights potential Sb3+-doped halides achieve demonstrates single crystals indoor plant lighting, infrared imaging, photodynamic therapy wound healing.

Language: Английский

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Advances of Low-Dimensional Organic-Inorganic Hybrid Metal Halide Luminescent Materials: A Review

Crystals, Journal Year: 2025, Volume and Issue: 15(4), P. 364 - 364

Published: April 16, 2025

Low-dimensional organic–inorganic hybrid metal halides (OIMHs) have garnered significant research attention due to their remarkable optical, electrical, and mechanical properties. These materials feature tunable optoelectronic characteristics, high photovoltaic efficiency, exceptional scalability processability ease of fabrication. By selecting appropriate organic inorganic components, it is possible achieve molecular-level dimensional control the halides. Here, this review provides an in-depth analysis structure synthesis methods OIMHs materials, explores optical properties, summarizes current applications in areas such as white-light LEDs, X-ray detectors, sensors, solar cells. Finally, we also discuss challenges faced by these offer a perspective on future development, aiming serve reference for advancing OIMHs.

Language: Английский

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Inverted Chiroptical Properties of Hybrid Metal Halides through Reversible Chiral Induction Driven by External and Internal Chirality Transfer

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: April 28, 2025

Chiral organic-inorganic hybrid metal halides (OIHMHs) are commonly constructed by introducing pairs of enantiomorphic chiral precursors through a single chirality transfer pathway, which may limit the regulation structural diversity and chiroptoelectronic properties. Herein, we propose new strategy for achieving reversible induction OIHMHs with inverted chiroptical properties external internal pathways, utilizing reagent R-/S-α-methylbenzylamine (R-/S-MBA). Specifically, R-MBA can externally induce enrichment M-DMA4(Bi0.486In0.511Sb0.003)Cl7 (M-DMA4(Bi-In-Sb)Cl7, DMA = dimethylammonium cation) without integrating into structure. Conversely, insert structure, internally inducing formation DMA(R-MBA)2(Bi0.634In0.362Sb0.004)Cl6 (DMA(R-MBA)2(Bi-In-Sb)Cl6), reverses arrangements inverts both linear nonlinear Both induced exhibit significant responses high photoluminescence quantum yield (PLQY) second harmonic generation (SHG). Moreover, centimeter-sized rhombic crystal enables morphology- angle-dependent circularly polarized luminescence dissymmetry factor ∼0.02, anisotropy. The enhances SHG intensity nine-fold increases PLQY to 98.9%. This multi-path transfer, based on reagent, significantly broaden scope functional OIHMH materials facilitate

Language: Английский

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