Temperature-dependent self-trapped exciton emission in Cu(I) doped zinc-based metal halides from well-resolved excited state structures

Nano Research, Journal Year: 2024, Volume and Issue: 17(8), P. 7768 - 7775

Published: May 2, 2024

Language: Английский

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Multimode Luminescence with Temperature and Energy Level Synergistic Dependence in Rare Earth Halide DPs for Advanced Multifunctional Applications

Small, Journal Year: 2024, Volume and Issue: 20(35)

Published: April 29, 2024

Abstract Rare‐earth halide double perovskites (DPs) have attracted extensive attention due to their excellent optoelectronic performance. However, the correlation between luminescence performance, crystal structure, and temperature, as well inherent energy transfer mechanism, is not understood. Herein, Lanthanide ions (Ln 3+ : Nd or Dy ) co‐dopants are incorporated into Sb doped Cs 2 NaYbCl 6 DPs construct (ET) models reveal effects of temperature levels rare earth on ET. The different excited state structures ‐Ln at temperatures relative positions synergistically determine physical processes luminescence. These multi‐mode luminescent materials exhibit good performance in anti‐counterfeiting, NIR imaging, sensing. This work provides new insights mechanism related photophysical process.

Language: Английский

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Multi-color long persistent luminescence in metal-organic frameworks regulated by dual channels of distorted second building units and organic ligand and applied in printing, message encryption and writing

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161076 - 161076

Published: Feb. 1, 2025

Language: Английский

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Efficient Broadband Near‐Infrared Emitters in Lead‐Free Metal Halides with Record Photoluminescence Quantum Yield Under Blue Light Excitation

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 9, 2024

Abstract Realizing ultra‐efficient broadband near‐infrared (NIR) luminescence, especially under blue light excitation, remains an enormous challenge in lead‐free metal halides. Herein, the efficient NIR emission excitation is achieved Sb 3+ ‐doped 0D (ETPP) 2 ZnCl 4 x Br 4‐4 ( = 0–1) (ETPP + (Ethyl)triphenylphosphonium) through coordination structure modulation and halogen substitution. Compared with visible of Sb(III)‐based compounds, 4x 4‐4x shifts to region due large excited state lattice distortion. Parallelly, bands gradually shift from 376 450 nm as replaces Cl, can further 702 763 nm. Thus, at a record luminous efficiency 55.4% be compounds. Moreover, large‐scale synthesis technique ZnBr : phosphors room temperature developed this compound exhibits impressive thermal chemical‐stabilities. Finally, high‐performance light‐emitting‐diode fabricated by combining commercial chip :10%Sb phosphors, which shows most advanced photoelectric (17.8%) output power (67.7 mW) as‐fabricated device demonstrated applications night vision biomedical imaging.

Language: Английский

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Precise Manipulation the Efficient Multi‐Exciton Emission with High Thermal Stability in Hybrid Manganese‐Antimony Chloride for Optical Thermometry, Anti‐Counterfeiting, and Information Encryption

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 12(11)

Published: Jan. 4, 2024

Abstract Recently, zero‐dimensional (0D) metal halides with highly efficient tunable emission have shown broad prospects in the field of anti‐counterfeiting. However, limited colors and low resolution, as well severe thermal quenching self‐trapped excitons, greatly constrained their applications. In this study, a high stability compound by precisely manipulating multi‐exciton within Sb‐doped hybrid manganese chloride is developed, which exhibits three (green, orange, yellow). It discovered that significant color changes low‐temperature range. Optical temperature sensing, anti‐counterfeiting, information encryption models based on are successfully designed. This research proposes an effective strategy for designing novel eco‐friendly anti‐counterfeiting sensing materials, paving way optical multi‐key encryption‐decryption

Language: Английский

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Highly efficient self-trapped exciton luminescence of Sb³⁺-doped (CH₆N₃)₃BiCl₆ for ethanol detection

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(8), P. 2944 - 2952

Published: Jan. 1, 2024

Zero-dimensional (0D) organic–inorganic metal halide hybrids (MHHs) are considered promising luminescent materials due to their unique “host–guest” structure and tunable emission spectrum.

Language: Английский

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The luminescence modulation of rare earth-doped/containing lead-free double perovskites toward multifunctional applications: a review

Nanoscale, Journal Year: 2024, Volume and Issue: 16(14), P. 6837 - 6852

Published: Jan. 1, 2024

This review summarized the optical performances of RE doped/containing lead-free DPs, which involve extension luminescence range, improvement PLQY, realization multi-mode excitation and multi-color emission.

Language: Английский

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Efficient Multicolor Emission Zn‐Sb‐Mn Chloride Scintillators: Large‐Scale Production for Multi‐Level Anti‐Counterfeiting, Information Storage, and X‐Ray Imaging

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

Published: Jan. 24, 2025

Abstract Achieving multiple efficient emissions from a single scintillator material is challenging. This work presents several Zn or Cd‐based halide materials with tetrahedral clusters, which show high‐efficiency, multicolor emission scintillating by co‐doping Sb 3 ⁺ and Mn 2 ⁺. In this 0D structure, can function as independent centers, producing green red bands, respectively, all photoluminescent quantum yields (PLQYs) exceeding 70% for green, yellow, emissions. Notably, Ph M‐Zn:Sb 3+ @Mn out of the above compounds exhibits PLQY values 90% three color Furthermore, it demonstrates exceptional scintillation performance under X‐ray illumination, achieving resolution 18 lp mm −1 detection limit 50.1 nGy air S⁻¹, surpassing most commercial scintillators. Additionally, cross‐ independent‐emission colors produced these varying excitations have been utilized to develop novel optical anti‐counterfeiting information storage applications high security. These advances demonstrate that significantly optimize host materials, multifunctional scintillators in variety technological applications.

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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Multifunctional Phosphor with High-Efficient Near-Infrared Emission Based on Antimony–Zinc Halides

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(24), P. 31322 - 31331

Published: June 10, 2024

Metal halide-based broadband near-infrared (NIR) luminescent materials face problems such as complicated preparation, high cost, low photoluminescence quantum yield, and excitation energy. Here, incorporating Sb3+ Br– into (C20H20P)2ZnCl4 crystals allowed for the achievement of efficient emission under 400 nm while maintaining satisfactory environmental thermal stability. The compounds exhibit a broad range bands from 550 to 1050 nm, with yield 93.57%. This is groundbreaking organic–inorganic hybrid metal halide NIR materials. suggested originate [SbX5]2–, supported by femtosecond transient absorption spectra density-functional theory calculations. phosphor-based LEDs successfully demonstrate potential applications in night vision, medical imaging, information encryption, anticounterfeiting.

Language: Английский

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