Large‐Scale Room‐Temperature Synthesis of the First Sb³⁺‐Doped Organic Ge(IV)‐Based Metal Halides with Efficient Yellow Emission for Solid‐State Lighting and Latent Fingerprint Detection

Small Structures, Journal Year: 2024, Volume and Issue: 5(5)

Published: Feb. 2, 2024

Organic–inorganic hybrid Ge(II)‐based metal halides have garnered significant interest due to their intriguing photophysical properties and environmentally friendly characteristics. However, challenges such as poor stability, low emission intensity, a complex synthesis process hindered widespread application. In addressing these issues, breakthrough in the large‐scale production of Sb 3+ ‐doped Ge(IV)‐based halide (C 13 H 14 N 3 ) 2 GeCl 6 phosphors at room temperature through straightforward solution method is presented. The synthesized compound exhibits remarkable bright broad yellow band 590 nm, boasting photoluminescence quantum efficiency 99.53 ± 0.06% highest among halides. Notably, introduction induces formation Jahn–Teller‐like self‐trapped excitons [SbCl ] 3− species, attributable lattice distortion strong electron–phonon coupling. Consequently, demonstrates large Stokes shift (221 nm) prolonged decay lifetime (3.06 μs). Furthermore, commendable chemical‐ photostability, prompting exploration applications white light‐emitting diodes latent fingerprint detection. This work not only provides practical approach for designing economically viable, friendly, highly efficient but also paves way novel directions expanded

Language: Английский

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Thermal Enhanced Energy Transfer and High Thermal Sensitivity of Sb³⁺ Doped Cs₂KYbCl₆ Rare Earth Double Perovskites

Laser & Photonics Review, Journal Year: 2024, Volume and Issue: unknown

Published: June 9, 2024

Abstract Rare‐earth based double perovskites (DPs) have attracted much attention due to stable, efficient, and unique luminescence, wide applications in many optoelectronic fields. However, their weak near‐infrared (NIR) emission poor anti‐thermal quenching severely limit the further applications. Herein, Sb 3+ ‐doped Cs 2 KYbCl 6 DP with cyan self‐trapped exciton (STE) NIR is prepared by a solvothermal method, separate photoluminescence quantum yields from STE reached ≈26.1% 43.8%, respectively. More importantly, not only contributes absorption energy transfer but also helps establish an effective thermally enhanced channel through self‐trapping state, resulting superior resistance. The thermal sensitivity of luminescence intensity ratio (LIR) I 1010 nm / 505 ( PL) time‐resolved temperature sensor reach 21.4 13.6% K −1 , respectively, which are ahead most sensing materials. Furthermore, it found that material exhibited advanced multifunctional LED lighting, flexible luminescent thin film, imaging. This work provides in‐depth understanding on photophysical mechanisms rare‐earth materials references for designing high‐performance

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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Light‐Driven Low‐Temperature and Near‐Unity Conversion of Ester on a Perovskite Derivative Photothermal Catalyst via Photon‐Bismuth Triggered Hotspot

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract Solar‐driven photothermal chemical transformations are regarded as green processes to reduce energy consumption and expected utilize unique light‐induced activation mechanisms improve reaction kinetics. Halide perovskites their derivatives, due optoelectronic properties compositional flexibility, allowed for the precise regulation of band structures surface electronic states, showing potentials photoactivated catalysts with photo‐thermal synergistic effects. However, catalytic performance halide is still unsatisfied low conversion (<0.2%). Herein, Cs 3 Bi x Sb 2‐ Br 9 designed a novel effective catalyst light‐driven degradation ester under room temperature, achieving near‐unity ≈99% without external heating. Photothermal process shows remarkable enhancementup 796% 200% compared that in single thermocatalysis or photocatalysis. The stable superior cyclic performance, well. Mechanistic studies combined situ characterizations theoretical calculations show photon‐bismuth hotspot synergy photoinduced charge transfer (photochemistry) significantly energy, light‐to‐heat effects (thermochemistry) elevate local bismuth active site promotes C─O bond (surface adsorption), which together contribute excellent solar‐driven efficiency on perovskite derivative.

Language: Английский

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Precise Design of Organic–Inorganic Hybrid Indium Molecular Ferroelectrics Based on Halogen Substitution

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

Published: March 17, 2025

Low-dimensional hybrid organic–inorganic ferroelectric materials have attracted significant interest due to their outstanding optical and electrical properties. Nevertheless, many of the most extensively studied hybrids incorporate lead or tin, which raises concerns related long-term stability environmental sustainability. Here, by using quasi-spherical strategy, we designed obtained a series zero-dimensional indium metal compounds: [Me2CH2X(i-Pr)N][InBr4] (X = H, 1; F, 2; Cl, 3; Br, 4, respectively), based on halogen-substituted quaternary amines. The differential scanning calorimetry (DSC), dielectric, second harmonic generation (SHG) measurement results show that these four compounds high-temperature phase transitions (above room temperature). properties were confirmed through piezoresponse force microscopy (PFM) electric hysteresis loop (P-E) measurements. This research offers new ideas for advancement innovation future smart optoelectronic devices.

Language: Английский

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Enhanced Photoluminescence of Cesium Cadmium Chloride via Cu Doping for X-ray Detection and Anticounterfeiting Applications

ACS Applied Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 28, 2025

Language: Английский

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Ultrabroadband (Vis‐NIR) Emission in Single‐Component Perovskite LEDs via Tailored Multi‐Exciton Energy Transfer Pathways

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

Published: May 15, 2025

Abstract The development of ultrabroadband light sources spanning the visible (Vis) to near‐infrared (NIR) range is fundamental importance for cutting‐edge applications in communication, metrology, and quantum technologies. Although phosphor‐converted LEDs have extended emission, they still suffer from spectral gaps, inadequate color rendering, constrained NIR output. Here, a promising approach introduced by tailoring multi‐exciton energy transfer pathways realize Vis‐to‐NIR emission Sb 3 ⁺/Ln ⁺ co‐doped vacancy‐ordered Cs₂HfCl₆ perovskite nanocrystals. By systematically optimizing Ln doping concentrations, excitation wavelengths, lanthanide ion selection, between singlet triplet self‐trapped exciton (STE) states levels are modulated. This design facilitates broad tunability through distribution control among centers, improves radiative efficiency reducing losses during processes, promotes stable performance mitigating excessive accumulation. resulting single‐component LED based on ⁺/Pr NCs delivers broadband extending ≈1200 nm, high quality (CRI ∼ 98.1, R9 98), strong visible/NIR PLQY (≈80%), steady operation over 50 h. findings provide insight into engineering low‐dimensional perovskites offer viable route toward emerging solid‐state sources.

Language: Английский

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Highly luminescent antimony-based organic–inorganic hybrid halides for X-ray imaging and detection

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(32), P. 12325 - 12331

Published: Jan. 1, 2024

The photophysical properties and scintillation performance of Sb 3+ -based (TEBA) 2 SbCl 5− x Br OIHHs have been tuned through regulating the ratio halogen atoms.

Language: Английский

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Finely Controlled Circularly Polarized Luminescence with Multimode Dynamic Response of Hybrid Metal Chlorides for Circularly Polarized White Light‐Emitting Diode and Programmable Information Encryption

Laser & Photonics Review, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 17, 2024

Abstract Stimulus‐responsive materials that exhibit efficient circularly polarized luminescence (CPL) have gained much interest for application in advanced smart photonics. Herein, the CPL‐active enantiomorphic 0D Sb 3+ ‐doped (R/S) 2 InCl 7 (R/S = R/S‐2‐methylpiperazine) are synthesized via a solution method. They show broadband yellow emission with near‐unity photoluminescence quantum yield and CPL asymmetry factor of 1.7 × 10 −3 . Their fascinating chiroptical activity should be attributed to chirality transfer self‐trapped exciton caused by strong electron–phonon interaction. Particularly, H O‐induced structural transformation is demonstrated obtain non‐emission ·H O after exposure humid environment. Importantly, exhibits unique nonlinear optical responses, rotation angle between quarter‐wave plate linearly can regulate reversible switching negligible luminescence. Moreover, white light‐emitting diode fabricated combining blue phosphors BaMgAl 17 :Eu 2+ , device tunable control positive warm light regulating linear polarizer plate. Based on responses programmable multi‐mode fluorescence encoding system constructed, four‐level information encryption three‐level encrypted 3D color codes also realized further proof‐of‐concept experiment.

Language: Английский

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Dual-Emissive Luminescence in OIHMH Single Crystals: Tunable Red-Green Emissions via Mn2+ Doping and Theoretical Insights

Chemical Science, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

This research elucidates the theoretical underpinnings of tunable luminescence in Mn 2+ -doped 0D hybrid perovskite C 6 H 14 N 2 CdBr 4 , paving way for advanced anti-counterfeiting materials with precise color regulation capabilities.

Language: Английский

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