One-Dimensional Indium(III) Halide Double Perovskites (CH₃NH₃)₂NaInX₆ (X = Cl, Br) and Their Antimony(III)-Induced High Photoluminescence

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

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Organic Indium Halides with Near-Unity Photoluminescence Quantum Yields for Highly Efficient Luminescent Inks and White Light Emitting Diodes

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Апрель 9, 2025

Zero-dimensional (0D) organic indium halides have been emerged as promising broadband light emitters with wide application prospects, but most of the present suffer from low photoluminescence quantum yield (PLQY), and a high-power excitation source is needed to obtain desirable performance. In this work, we elaborately select appropriate cations crystal structural engineering obtained series highly efficient 0D bromides. Under UV excitation, these display yellow emissions (550-600 nm) near-unity PLQYs, which represents one highest values in all previously reported halides. Benefiting successful nanoscale engineering, luminescent inks based on are facilely prepared by dispersing nanocrystals into various solvents. The ink can be utilized print anticounterfeiting patterns, displays photoreversible switching visible/invisible transformation under alternating irradiation visible light. Furthermore, white emitting diodes fabricated high color rendering index above 90 using down-conversion phosphors. This work not only promotes development also significantly broadens solid-state illumination anticounterfeiting, etc.

Язык: Английский

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Efficient Manipulation of Photoluminescence by Organic Cations and Sb Doping in Hybrid Manganese Chlorides

Journal of Luminescence, Год журнала: 2024, Номер 277, С. 120937 - 120937

Опубликована: Окт. 11, 2024

Язык: Английский

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Boosting Photoluminescence of Rare‐Earth‐Based Double Perovskites by Isoelectronic Doping of ns² Metal Ions

Small, Год журнала: 2024, Номер unknown

Опубликована: Окт. 27, 2024

Abstract Doping of ns 2 metal ions as an energy transfer (ET) bridge can significantly elevate the photoluminescence properties. Nonetheless, fundamental influence on local lattice structures remains unclear, hindering advancement functional materials. Herein, Sb 3+ doped rare earth double perovskites is employed a typical case to demonstrate this issue. It found that isoelectronic doping not only enhances ET efficiency but also changes their localized electronic and structures. Both density theory (DFT) Judd–Ofelt (J–O) calculations provide unambiguous evidence enables more charge in [LnCl 6 ] 3− (Ln: Lanthanide) octahedron reduces symmetry environment around Ln , facilitating radiative transition rates while enhancing efficiency. Compared with Cs NaScCl :Ln :Sb /Ln enhanced by 1.5‐fold, reaching up 98.3%. To best available knowledge, work first unravel intrinsic mechanism process enabled via DFT J–O theory. This research sheds light understanding photophysics rational design perovskite

Язык: Английский

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Designing Zero-Dimensional Cadmium-Based Organic–Inorganic Hybrids: The Role of Halogen Doping in Modulating Multifunctional Properties

Inorganic Chemistry, Год журнала: 2024, Номер 63(38), С. 17864 - 17871

Опубликована: Сен. 10, 2024

Advances in materials science are increasingly dependent on the development of multifunctional capable improving system efficiency and reducing environmental impact. In this study, two zero-dimensional (0D) cadmium-based organic-inorganic hybrid (BEMPD)

Язык: Английский

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Zero-Dimensional Organic-inorganic Hybrid Indium Halide Perovskite with Broadband Yellow Light Emission

CrystEngComm, Год журнала: 2024, Номер 26(45), С. 6486 - 6492

Опубликована: Янв. 1, 2024

0D indium halide [1-Me-Pipz] 2 [InCl 6 ]Cl·H O exhibits strong broadband yellow emission with a high PLQY of 52%. This crystal also demonstrated excellent structural and spectral stability, allowing its use in efficient white light-emitting diodes.

Язык: Английский

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Luminescence regulation of rare-earth based double perovskites by doping and applications

Journal of Luminescence, Год журнала: 2024, Номер 277, С. 120990 - 120990

Опубликована: Ноя. 15, 2024

Язык: Английский

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Pressure‐Induced Excitation‐Dependent Emission Color Tuning and Enhancement in 1D Zigzag Edge‐Sharing Perovskites (C₆H₁₀N₂)PbX₄ (X = Br, Cl)

Advanced Optical Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 29, 2024

Abstract 1D zigzag edge‐sharing perovskites have generated intense research interest due to their unique structures and optoelectronic properties. Recent efforts focused on refining these enhance efficiency across various applications. Herein, high‐pressure is utilized modulate the properties of two Pb‐based perovskites, (AMP)PbCl 4 (AMP)PbBr (where AMP 2+ = C 6 H 10 N 2 ), characterized by [PbX ] 2− ∞ chains linked through hydrogen bonding. An inverse excitation‐dependent emission phenomenon enhancement are observed in attributed contraction inhomogeneously coordinated 4− octahedra. Pressure‐induced lattice promotes overlap Pb X orbitals, resulting a decrease bandgap. Concurrently, pressure‐induced phase transitions, distortion octahedra, lead discontinuous decreases These optical structural explorations facilitate systematic design halide with desired characteristics.

Язык: Английский

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Spin‐Orbital Ordering Effects of Light Emission in Organic–Inorganic Hybrid Metal Halide Perovskites

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 10, 2024

Organic-inorganic hybrid metal halide perovskites carrying strong spin-orbital coupling (SOC) have demonstrated remarkable light-emitting properties in spontaneous emission, amplified emission (ASE), and circularly-polarized luminescence (CPL). Experimental studies shown that SOC plays an important role controlling the such perovskites. Here, consists of both orbital (L) spin (S) momentum, leading to formation J (= L + S) excitons intrinsically involving momentum. In general, there are three issues determining effects on excitons. First, when function as individual quasi-particles, configurations momentum directly decide bright dark Second, mutually interacting collective exciton-exciton interactions can occur through The give rise different properties, presenting ordering effects. Third, develop ASE coherent interaction CPL exciton-helical effect. This review article discusses ASE, organic-inorganic

Язык: Английский

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Engineered Energy Transfer in Room Temperature Phosphorescent Materials for Time‐Resolved Dual‐Mode Encryption

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 12, 2024

Abstract Room temperature phosphorescence (RTP) materials are of significant attentions due to their unique optical properties and potential applications in anti‐counterfeiting information security. However, single spatial resolution decryption methods fail meet high‐level security demands. A novel dual‐mode encryption strategy based on self‐trapped exciton (STE) fluorescence is proposed. By introducing ns 2 metal ions into the zero‐dimensional organic–inorganic hybrid halide (Ph 3 S) SnCl 6 , energy transfer pathways from S 1 T n levels STEs constructed, enabling precise control performance. This material exhibited STE fluorescence‐phosphorescence with different afterglow time, which can be utilized develop high‐performance time‐resolved cryptographic systems. Femtosecond transient absorption experiments indicated that rate significantly affected characteristics long materials. The this systems demonstrated, enhancing through multi‐level providing a new avenue for advanced

Язык: Английский

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