Inorganic Chemistry, Год журнала: 2024, Номер unknown
Опубликована: Дек. 9, 2024
Intrinsic stereochemical activity of the 5s
Язык: Английский
Advanced Functional Materials, Год журнала: 2024, Номер 34(34)
Опубликована: Июнь 6, 2024
Abstract Hybrid metal halides (HMHs) have emerged as a promising platform for optically functional crystalline materials, but it is extremely challenging to thoroughly elucidate the electron transition coupled additional ligand emission. Herein, discover sequences of lead‐free HMHs with distinct active cations are aimed, that is, Sb 3+ (5s 2 ) lone‐pair configuration and In (4d 10 fully‐filled configuration. (Me NH 4 M Cl 6 ·Cl = −CH 3 , Sb, In) exhibits superior temperature/component‐dependent luminescence behaviors resulting from competition between triplet‐states (T n ‐S 0 self‐trapped excitons (STEs) inorganic units singlet‐state (S 1 organic cations, which manipulated by optical activity levels [SbCl ] 3− [InCl . The bonding differences /In − in terms electronic excitation hybridization emphasized, different electron‐transition mechanisms established according PL spectra at extreme temperature 5 305 K theoretical calculations. By fine‐tuning B‐site alloying, photoluminescence quantum yield (PLQY 81.5%) stability optimized 20% alloying This research sheds light on rules governing HMHs, well exploring optical‐functional application aviation sensors access‐control systems.
Язык: Английский
Процитировано
20
Inorganic Chemistry Frontiers, Год журнала: 2024, Номер 11(8), С. 2290 - 2299
Опубликована: Янв. 1, 2024
(TECA)PbBr 3 and (TEBA)PbBr have a wide range of photoluminescence signals undergo coupling the structural phase transition quenching.
Язык: Английский
Процитировано
15
Dalton Transactions, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
This review covers NIR luminescent materials doped with RE, TM, and main-group ions, focusing on their optical properties, mechanisms, applications in bioimaging, LEDs, sensors, strategies to improve efficiency thermal stability.
Язык: Английский
Процитировано
2
Inorganic Chemistry, Год журнала: 2025, Номер unknown
Опубликована: Янв. 24, 2025
Copper-based halides have attracted significant attention due to their unique photophysical properties and diverse coordination configurations. However, enhancing water stability modulating structural transitions in cuprous halide materials remain challenging. In this work, we successfully synthesized three copper(I) halides, (C24H28P)CuBr2 (L1, [C24H28P]+ = hexyltriphenylphosphonium), (C24H28P)2Cu4Br6 (L2), (C24H28P)2Cu4I6 (L3), via solvent volatilization, demonstrating exceptional even after 27 days of submersion. Crystals L1 L2 emit yellow orange light, respectively, under ultraviolet excitation, while L3 emits green light when excited by blue light. A rapid phase transition between occurs stimulated with methanol at room temperature. Further exposure a NaI solution can result substitution Br– ions I– [Cu4Br6]2– form L3. Multimodal anticounterfeiting luminescent labels high-security levels been manufactured based on sequential → transition. Moreover, test paper designed be applied for low-level detection. This work accomplishes the coregulation transformations luminescence switching combining simulations halogen strategies, which not only deepens understanding structure–property relationships but also broadens optical applications these materials.
Язык: Английский
Процитировано
1
Chemical Engineering Journal, Год журнала: 2024, Номер 494, С. 153060 - 153060
Опубликована: Июнь 12, 2024
Язык: Английский
Процитировано
9
The Journal of Physical Chemistry C, Год журнала: 2025, Номер unknown
Опубликована: Янв. 6, 2025
Low-dimensional In(III) halide perovskites have become one of the most attractive classes light-emitting materials due to their tunable and high photoluminescence efficiency. However, synthesis is still a challenge. Here, we report two novel Na(I)–In(III) double perovskite-related compounds (MA)2NaInCl6 (MA)2NaInBr6 Sb3+-doped counterparts. Both crystallize in one-dimensional (1D) face-sharing chain structures with trigonal P3̅m1 symmetry. show wide direct band gaps 5.3 3.9 eV, respectively. While both are nonemissive pristine forms, 5% green (555 nm) yellow (585 emission quantum yields 13.8 53.6%, For (MA)2NaInBr6, PLQY 67.64% was achieved 1% Sb doping. Variable-temperature PL studies density functional theory calculations indicate that Sb3+ ion introduces self-trapped excitonic (STE) states, which responsible for high-efficiency emission. Our findings significantly expand scope low-dimensional photoluminescent In(III)-based metal perovskites.
Язык: Английский
Процитировано
1
Materials Horizons, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
Metal halides are widely applied in solid-state lighting (SSL), optoelectronic devices, information encryption, and near-infrared (NIR) detection due to their superior photoelectric properties tunable emission. However, single-component phosphors that can be efficiently excited by light-emitting diode (LED) chips cover both the visible (VIS) NIR emission regions still very rare. To address this issue, (TPA)2ZnBr4:Sn2+/Mn2+ (TPA = [(CH3CH2CH2)4N]+) were synthesized using solvent evaporation method. The Sn2+ doping significantly enhances luminescence of (TPA)2ZnBr4, shifts weak blue light efficient emissions red zones. Spectroscopic studies density functional theory (DFT) calculations reveal attributed different levels 3P1-1S0 [SnBr4]2- tetrahedron caused Jahn-Teller distortion. More importantly, energy transfer from Mn2+ enables ultra-broadband VIS-NIR across 400-1000 nm range, with excitation-dependent characteristics. These suggest has great potential as a high-performance, luminescent material for applications general lighting, source, anti-counterfeiting labels.
Язык: Английский
Процитировано
1
Inorganic Chemistry, Год журнала: 2025, Номер unknown
Опубликована: Фев. 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.
Язык: Английский
Процитировано
1
Small, Год журнала: 2024, Номер unknown
Опубликована: Сен. 18, 2024
Abstract Hybrid metal halides display a range of optical properties and hold promise for various applications such as solid‐state lighting, anti‐counterfeiting measures, backlight displays, X‐ray detection. The incorporation zinc into (C 13 H 26 N) 2 MnBr 4 aims to enhance its structural rigidity improve narrow band green light emission properties. resulting ZnBr compound exhibits an identical crystal structure , indicating the potential solid solution varying Zn Mn ratios within this framework. 0.2 0.8 Br significantly enhanced properties, including photoluminescence quantum yield 92%, minimum full width at half maximum 43 nm, 85% retention room temperature 420 K. Additionally, crystals ZnCl 7 18 ZnX (X = Br, I) are synthesized, with displaying luminescent color changes dependent on excitation. demonstrates reversible phase transitions alterations in A white light‐emitting diode utilizing commercial phosphors exhibited gamut 112.2% National Television Standards Committee 1931 Standard. This investigation introduces stable highly efficient narrow‐band phosphor suitable displays.
Язык: Английский
Процитировано
3
Inorganic Chemistry, Год журнала: 2025, Номер unknown
Опубликована: Фев. 14, 2025
Organic-inorganic hybrid Sn(IV)-based metal halides have received wide attention due to their excellent structural stability. However, realizing red-emitting with high stability and efficient photoluminescence (PL) efficiency remains challenging. Here, a stable organic-inorganic halide (C8H10O2N)2SnCl6 zero-dimensional (0D) structure has been obtained, which, however, displays poor PL properties the inert expression of Sn4+-4d10 electrons intrinsic indirect band gap feature. To address above challenges, Te4+ an active 5s2 lone pair is embedded into lattice (C8H10O2N)2SnCl6, as result, 5%Te4+-doped direct exhibits broadband deep-red emission (∼688 nm) (∼53%). Experimental calculated results reveal that embedding can effectively regulate facilitate transformation from structure, thereby leading radiative recombination. Benefiting merits, high-efficiency white light-emitting diode (WLED) fabricated using Te4+-doped ultrahigh color rendering index (CRI) up 94.5, suggesting great potential this material for solid-state lighting. This work provides significant insight design highly phosphors halides.
Язык: Английский
Процитировано
0